TTL_Databook

SN54/74LS20 DUAL 4-INPUT NAND GATE VCC DUAL 4-INPUT NAND GATE 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 1234567 J SUFFIX GND CERAMIC CASE 632-08 14 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-29

SN54 / 74LS20 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX Power Supply Current 0.8 mA VCC = MAX 2.2 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 9.0 15 CL = 15 pF 10 15 FAST AND LS TTL DATA 5-30

SN54/74LS21 DUAL 4-INPUT AND GATE VCC DUAL 4-INPUT AND GATE 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 1234567 J SUFFIX GND CERAMIC CASE 632-08 14 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-31

SN54 / 74LS21 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX Power Supply Current 2.4 mA VCC = MAX 4.4 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 8.0 15 CL = 15 pF 10 20 FAST AND LS TTL DATA 5-32

SN54/74LS22 DUAL 4-INPUT NAND GATE VCC DUAL 4-INPUT NAND GATE 14 13 12 11 10 LOW POWER SCHOTTKY 98 * * J SUFFIX CERAMIC 1234567 CASE 632-08 GND 14 * OPEN COLLECTOR OUTPUTS 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 VOH Output Voltage — High 54, 74 55 V IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-33

SN54 / 74LS22 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA IOH Output HIGH Current 54, 74 100 µA VCC = MIN, VOH = MAX VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V IIL Input LOW Current 0.1 mA VCC = MAX, VIN = 7.0 V – 0.4 mA VCC = MAX, VIN = 0.4 V Power Supply Current 0.8 mA VCC = MAX 2.2 ICC Total, Output HIGH Total, Output LOW AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 17 32 CL = 15 pF, RL = 2.0 kΩ 15 28 FAST AND LS TTL DATA 5-34

SN54/74LS26 QUAD 2-INPUT NAND BUFFER • ESD > 3500 Volts VCC QUAD 2-INPUT NAND BUFFER 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 ** ** J SUFFIX CERAMIC 1234567 CASE 632-08 GND 14 * OPEN COLLECTOR OUTPUTS 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 VOH Output Voltage — High 54, 74 15 V IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-35

SN54 / 74LS26 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA IOH Output HIGH Current 54, 74 1000 µA VCC = MIN, VOH = MAX VOL Output LOW Voltage 54, 74 54, 74 50 µA VCC = MIN, VOH = 12 V 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V Power Supply Current 1.6 mA VCC = MAX ICC Total, Output HIGH 4.4 Total, Output LOW AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 17 32 CL = 15 pF, RL = 2.0 kΩ 15 28 FAST AND LS TTL DATA 5-36

SN54/74LS27 TRIPLE 3-INPUT NOR GATE VCC TRIPLE 3-INPUT NOR GATE 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 1234567 J SUFFIX GND CERAMIC CASE 632-08 14 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-37

SN54 / 74LS27 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX Power Supply Current 4.0 mA VCC = MAX ICC Total, Output HIGH 6.8 Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 10 15 CL = 15 pF 10 15 FAST AND LS TTL DATA 5-38

SN54/74LS28 QUAD 2-INPUT NOR BUFFER VCC QUAD 2-INPUT NOR BUFFER 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 1234567 J SUFFIX GND CERAMIC CASE 632-08 14 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 1.2 mA IOL Output Current — Low 54 12 mA 74 24 FAST AND LS TTL DATA 5-39

SN54 / 74LS28 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 12 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 24 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) – 30 –130 mA VCC = MAX Power Supply Current 3.6 mA VCC = MAX ICC Total, Output HIGH 13.8 Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Propagation Delay Min Typ Max ns tPHL Propagation Delay ns VCC = 5.0 V 12 24 CL = 45 pF, RL = 667 Ω 12 24 FAST AND LS TTL DATA 5-40

SN54/74LS30 8-INPUT NAND GATE VCC 8-INPUT NAND GATE 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 1234567 J SUFFIX GND CERAMIC CASE 632-08 14 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-41

SN54 / 74LS30 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 V or VIL per Truth Table 2.7 3.5 VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 VIN = VIL or VIH V IOL = 8.0 mA per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V mA VCC = MAX, VIN = 0.4 V IIL Input LOW Current – 0.4 mA VCC = MAX –100 IOS Short Circuit Current (Note 1) – 20 mA VCC = MAX 0.5 Power Supply Current 1.1 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 8.0 15 CL = 15 pF 13 20 FAST AND LS TTL DATA 5-42

SN54/74LS32 QUAD 2-INPUT OR GATE VCC QUAD 2-INPUT OR GATE 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 1234567 J SUFFIX GND CERAMIC CASE 632-08 14 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-43

SN54 / 74LS32 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 V or VIL per Truth Table 2.7 3.5 VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 VIN = VIL or VIH V IOL = 8.0 mA per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V mA VCC = MAX, VIN = 0.4 V IIL Input LOW Current – 0.4 mA VCC = MAX –100 IOS Short Circuit Current (Note 1) – 20 mA VCC = MAX 6.2 Power Supply Current 9.8 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 14 22 CL = 15 pF 14 22 FAST AND LS TTL DATA 5-44

SN54/74LS33 QUAD 2-INPUT NOR BUFFER VCC QUAD 2-INPUT NOR BUFFER 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 ** J SUFFIX CERAMIC ** CASE 632-08 1234567 14 GND 1 * OPEN COLLECTOR OUTPUTS 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 VOH Output Voltage — High 54, 74 5.5 V IOL Output Current — Low 54 12 mA 74 24 FAST AND LS TTL DATA 5-45

SN54 / 74LS33 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA IOH Output HIGH Current 54, 74 250 µA VCC = MIN, VOH = MAX VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 12 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 24 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V Power Supply Current 3.6 mA VCC = MAX ICC Total, Output HIGH 13.8 Total, Output LOW AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V, RL = 667 Ω 20 32 CL = 45 pF 18 28 FAST AND LS TTL DATA 5-46

SN54/74LS37 QUAD 2-INPUT NAND BUFFER VCC QUAD 2-INPUT NAND BUFFER 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 1234567 J SUFFIX GND CERAMIC CASE 632-08 14 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 1.2 mA IOL Output Current — Low 54 12 mA 74 24 FAST AND LS TTL DATA 5-47

SN54 / 74LS37 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 V or VIL per Truth Table 2.7 3.5 54, 74 0.25 0.4 V IOL = 12 mA VCC = VCC MIN, 74 0.35 0.5 VOL Output LOW Voltage VIN = VIL or VIH V IOL = 24 mA per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V mA VCC = MAX, VIN = 0.4 V IIL Input LOW Current – 0.4 mA VCC = MAX –130 IOS Short Circuit Current (Note 1) – 30 mA VCC = MAX 2.0 Power Supply Current 12 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V, RL = 667 Ω 12 24 CL = 45 pF 12 24 FAST AND LS TTL DATA 5-48

SN54/74LS38 QUAD 2-INPUT NAND BUFFER VCC QUAD 2-INPUT NAND BUFFER 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 ** ** J SUFFIX CERAMIC 1234567 CASE 632-08 GND 14 * OPEN COLLECTOR OUTPUTS 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 VOH Output Voltage — High 54, 74 5.5 V IOL Output Current — Low 54 12 mA 74 24 FAST AND LS TTL DATA 5-49

SN54 / 74LS38 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA IOH Output HIGH Current 54, 74 250 µA VCC = MIN, VOH = MAX VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 12 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 24 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.4 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V Power Supply Current 2.0 mA VCC = MAX ICC Total, Output HIGH 12 Total, Output LOW AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V, RL = 667 Ω 20 32 CL = 45 pF 18 28 FAST AND LS TTL DATA 5-50

SN54/74LS40 DUAL 4-INPUT NAND BUFFER VCC DUAL 4-INPUT NAND BUFFER 14 13 12 11 10 LOW POWER SCHOTTKY 9 8 1234567 J SUFFIX GND CERAMIC CASE 632-08 14 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 1.2 mA IOL Output Current — Low 54 12 mA 74 24 FAST AND LS TTL DATA 5-51

SN54 / 74LS40 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 12 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 24 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) – 30 –130 mA VCC = MAX Power Supply Current 1.0 mA VCC = MAX 6.0 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V, RL = 667 Ω 12 24 CL = 45 pF 12 24 FAST AND LS TTL DATA 5-52

SN54/74LS42 ONE-OF-TEN DECODER ONE-OF-TEN DECODER LOW POWER SCHOTTKY The LSTTL / MSI SN54 / 74LS42 is a Multipurpose Decoder designed to ac- cept four BCD inputs and provide ten mutually exclusive outputs. The LS42 is fabricated with the Schottky barrier diode process for high speed and is completely compatible with all Motorola TTL families. • Multifunction Capability • Mutually Exclusive Outputs • Demultiplexing Capability • Input Clamp Diodes Limit High Speed Termination Effects CONNECTION DIAGRAM DIP (TOP VIEW) J SUFFIX CERAMIC VCC A0 A1 A2 A3 9 8 7 CASE 620-09 16 15 14 13 12 11 10 9 16 1 NOTE: N SUFFIX The Flatpak version has the PLASTIC same pinouts (Connection CASE 648-08 Diagram) as the Dual In-Line Package. 12 3 4 56 78 16 01 2 3 45 6 GND 1 PIN NAMES LOADING (Note a) A0 – A3 HIGH LOW D SUFFIX 0 to 9 SOIC Address Inputs 0.5 U.L. 0.25 U.L. 16 Outputs, Active LOW (Note b) 1 CASE 751B-03 10 U.L. 5(2.5) U.L. NOTES: ORDERING INFORMATION a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW. b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) SN54LSXXJ Ceramic SN74LSXXN Plastic Temperature Ranges. SN74LSXXD SOIC LOGIC DIAGRAM A0 A1 A2 A3 LOGIC SYMBOL 15 14 13 12 15 14 13 12 A0 A1 A2 A3 12 3 45 6 7 9 10 11 012345 6 7 89 0 1 2 3 4 56 7 89 1 2 3 4 5 6 7 9 10 11 VCC = PIN 16 VCC = PIN 16 GND = PIN 8 GND = PIN 8 = PIN NUMBERS FAST AND LS TTL DATA 5-53

SN54 / 74LS42 FUNCTIONAL DESCRIPTION The LS42 decoder accepts four active HIGH BCD inputs to the inputs. and provides ten mutually exclusive active LOW outputs, as shown by logic symbol or diagram. The active LOW outputs The most significant input A3 produces a useful inhibit func- facilitate addressing other MSI units with LOW input enables. tion when the LS42 is used as a one-of-eight decoder. The A3 input can also be used as the Data input in an 8-output The logic design of the LS42 ensures that all outputs are HIGH when binary codes greater than nine are applied demultiplexer application. TRUTH TABLE A0 A1 A2 A3 0 1 2 3 4 5 6 7 8 9 L L L L LHHHHHHHHH H L L L HLHHHHHHHH L H L L HHLHHHHHHH H H L L HHHLHHHHHH L L H L HHHHLHHHHH H L H L HHHHHLHHHH L H H L HHHHHHLHHH H H H L HHHHHHHLHH L L L H HHHHHHHHLH H L L H HHHHHHHHHL L H L H HHHHHHHHHH H H L H HHHHHHHHHH L L H H HHHHHHHHHH H L H H HHHHHHHHHH L H H H HHHHHHHHHH H H H H HHHHHHHHHH H = HIGH Voltage Level L = LOW Voltage Level GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-54

SN54 / 74LS42 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 V or VIL per Truth Table 2.7 3.5 VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 VIN = VIL or VIH V IOL = 8.0 mA per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V mA VCC = MAX, VIN = 0.4 V IIL Input LOW Current – 0.4 mA VCC = MAX –100 mA VCC = MAX IOS Short Circuit Current (Note 1) – 20 13 ICC Power Supply Current Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Propagation Delay Min Typ Max ns Figure 2 VCC = 5.0 V tPHL (2 Levels) ns Figure 1 CL = 15 pF 15 25 tPLH Propagation Delay 15 25 tPHL (3 Levels) 20 30 20 30 AC WAVEFORMS VIN 1.3 V 1.3 V VIN 1.3 V 1.3 V VOUT tPHL tPLH VOUT tPHL tPLH 1.3 V 1.3 V 1.3 V 1.3 V Figure 1 Figure 2 FAST AND LS TTL DATA 5-55

SN54/74LS47 BCD TO 7-SEGMENT BCD TO 7-SEGMENT DECODER/DRIVER DECODER/ DRIVER The SN54 / 74LS47 are Low Power Schottky BCD to 7-Segment Decod- LOW POWER SCHOTTKY er / Drivers consisting of NAND gates, input buffers and seven AND-OR-IN- VERT gates. They offer active LOW, high sink current outputs for driving J SUFFIX indicators directly. Seven NAND gates and one driver are connected in pairs CERAMIC to make BCD data and its complement available to the seven decoding CASE 620-09 AND-OR-INVERT gates. The remaining NAND gate and three input buffers provide lamp test, blanking input / ripple-blanking output and ripple-blanking 16 input. 1 The circuits accept 4-bit binary-coded-decimal (BCD) and, depending on 16 N SUFFIX the state of the auxiliary inputs, decodes this data to drive a 7-segment display 1 PLASTIC indicator. The relative positive-logic output levels, as well as conditions CASE 648-08 required at the auxiliary inputs, are shown in the truth tables. Output configurations of the SN54 / 74LS47 are designed to withstand the relatively 16 D SUFFIX high voltages required for 7-segment indicators. 1 SOIC These outputs will withstand 15 V with a maximum reverse current of CASE 751B-03 250 µA. Indicator segments requiring up to 24 mA of current may be driven directly from the SN74LS47 high performance output transistors. Display ORDERING INFORMATION patterns for BCD input counts above nine are unique symbols to authenticate input conditions. SN54LSXXJ Ceramic SN74LSXXN Plastic The SN54 / 74LS47 incorporates automatic leading and / or trailing-edge SN74LSXXD SOIC zero-blanking control (RBI and RBO). Lamp test (LT) may be performed at any time which the BI / RBO node is a HIGH level. This device also contains an overriding blanking input (BI) which can be used to control the lamp intensity by varying the frequency and duty cycle of the BI input signal or to inhibit the outputs. • Lamp Intensity Modulation Capability (BI/RBO) • Open Collector Outputs • Lamp Test Provision • Leading / Trailing Zero Suppression • Input Clamp Diodes Limit High-Speed Termination Effects CONNECTION DIAGRAM DIP (TOP VIEW) VCC f g a b c d e 16 15 14 13 12 11 10 9 1 2 3 4 56 78 LOGIC SYMBOL 71 2 63 5 B C LT BI / RBO RBI D A GND A B C D LT RBI PIN NAMES LOADING (Note a) BI/ HIGH LOW a b c d e f g RBO A, B, C, D BCD Inputs 0.5 U.L. 0.25 U.L. 13 12 11 10 9 15 14 4 RBI Ripple-Blanking Input 0.5 U.L. 0.25 U.L. VCC = PIN 16 LT Lamp-Test Input 0.5 U.L. 0.25 U.L. GND = PIN 8 BI / RBO Blanking Input or 0.5 U.L. 0.75 U.L. Ripple-Blanking Output 1.2 U.L. a, to g Outputs Open-Collector 2.0 U.L. 15 (7.5) U.L. NOTES: a) 1 Unit Load (U.L.) = 40 µA HIGH, 1.6 mA LOW. b) Output current measured at VOUT = 0.5 V The Output LOW drive factor is 7.5 U.L. for Military (54) and 15 U.L. for Commercial (74) Temperature Ranges. FAST AND LS TTL DATA 5-56

SN54 / 74LS47 aa LOGIC DIAGRAM bb A cc OUTPUT B INPUT dd ee C D ff BLANKING INPUT OR gg RIPPLE-BLANKING OUTPUT LAMP-TEST INPUT RIPPLE-BLANKING INPUT 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NUMERICAL DESIGNATIONS — RESULTANT DISPLAYS TRUTH TABLE INPUTS OUTPUTS DECIMAL LT RBI D C B A BI/RBO a b c d e f g NOTE OR H H LLLL H L L L L L LH A FUNCTION 0 1 H X LLLH H HL LHHHH A 2 H X LLHL H LLHLLHL 3 H X L LHH H L L L LHHL 4 H X LHL L H HL LHHL L 5 H X LHLH H LHLLHLL 6 H X LHHL H HHL L L L L 7 H X LHHH H L L LHHHH 8 H X HLLL H LLLLLLL 9 H X HL LH H L L LHHL L 10 H X H L H L H H H H L L H L 11 H X H L H H H H H L L H H L 12 H X H H L L H H L H H H L L 13 H X H H L H H L H H L H L L 14 H X H H H L H H H H L L L L 15 H X H H H H H H H H H H H H BI X X XXXX L HHHHHHH B RBI H L LLLL L HHHHHHH C LT L X XXXX H LLLLLLL D H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial NOTES: (A) BI/RBO is wire-AND logic serving as blanking Input (BI) and/or ripple-blanking output (RBO). The blanking out (BI) must be open or held at a HIGH level when output functions 0 through 15 are desired, and ripple-blanking input (RBI) must be open or at a HIGH level if blanking of a decimal 0 is not desired. X = input may be HIGH or LOW. (B) When a LOW level is applied to the blanking input (forced condition) all segment outputs go to a LOW level regardless of the state of any other input condition. (C) When ripple-blanking input (RBI) and inputs A, B, C, and D are at LOW level, with the lamp test input at HIGH level, all segment outputs go to a HIGH level and the ripple-blanking output (RBO) goes to a LOW level (response condition). (D) When the blanking input/ripple-blanking output (BI/RBO) is open or held at a HIGH level, and a LOW level is applied to lamp test input, all segment outputs go to a LOW level. FAST AND LS TTL DATA 5-57

SN54 / 74LS47 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High BI / RBO 54, 74 – 50 µA IOL Output Current — Low BI / RBO 54 1.6 mA VO (off) BI / RBO 74 3.2 IO (on) Off-State Output Voltage a to g 54, 74 15 V 54 On-State Output Current a to g 74 12 mA On-State Output Current a to g 24 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Theshold Voltage for All Inputs 54 0.7 Guaranteed Input LOW Threshold Voltage VIL Input LOW Voltage 74 0.8 V for All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage, BI / RBO 2.4 4.2 V VCC = MIN, IOH = – 50 µA, VIN = VIN or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 1.6 mA VCC = MIN, VIN = VIN or IO (off) BI / RBO 74 0.35 0.5 V IOL = 3.2 mA VIL per Truth Table VO (on) IIH Off-State Output Current 54, 74 250 µA VCC = MAX, VIN = VIN or VIL per Truth IIL a thru g 74 Table, VO (off) = 15 V On-State Output Voltage a thru g 0.25 0.4 V IO (on) = 12 mA VCC = MAX, VIN = VIH 0.35 0.5 V IO (on) = 24 mA or VIL per Truth Table Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V Input LOW Current BI / RBO – 1.2 mA VCC = MAX, VIN = 0.4 V Any Input except BI / RBO – 0.4 IOS BI / RBO Output Short Circuit Current (Note 1) – 0.3 –2.0 mA VCC = MAX, VOUT = 0 V mA VCC = MAX ICC Power Supply Current 7.0 13 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions Min Typ Max tPHL Propagation Delay, Address ns VCC = 5.0 V tPLH Input to Segment Output 100 ns CL = 15 pF 100 tPHL Propagation Delay, RBI Input ns tPLH To Segment Output 100 ns 100 AC WAVEFORMS VIN 1.3 V 1.3 V VIN 1.3 V 1.3 V VOUT tPHL tPLH VOUT tPHL tPLH 1.3 V 1.3 V 1.3 V 1.3 V Figure 1 Figure 2 FAST AND LS TTL DATA 5-58

SN54/74LS48 BCD TO 7-SEGMENT BCD TO 7-SEGMENT DECODER DECODER The SN54 / 74LS48 is a BCD to 7-Segment Decoder consisting of NAND LOW POWER SCHOTTKY gates, input buffers and seven AND-OR-INVERT gates. Seven NAND gates and one driver are connected in pairs to make BCD data and its complement J SUFFIX available to the seven decoding AND-OR-INVERT gates. The remaining CERAMIC NAND gate and three input buffers provide lamp test, blanking input/ripple- CASE 620-09 blanking input for the LS48. 16 The circuit accepts 4-bit binary-coded-decimal (BCD) and, depending on 1 the state of the auxiliary inputs, decodes this data to drive other components. The relative positive logic output levels, as well as conditions required at the 16 N SUFFIX auxiliary inputs, are shown in the truth tables. 1 PLASTIC CASE 648-08 The LS48 circuit incorporates automatic leading and / or trailing edge zero-blanking control (RBI and RBO). Lamp Test (LT) may be activated any time when the BI / RBO node is HIGH. Both devices contain an overriding blanking input (BI) which can be used to control the lamp intensity by varying the frequency and duty cycle of the BI input signal or to inhibit the outputs. • Lamp Intensity Modulation Capability (BI/RBO) • Internal Pull-Ups Eliminate Need for External Resistors • Input Clamp Diodes Eliminate High-Speed Termination Effects CONNECTION DIAGRAM DIP (TOP VIEW) VCC f g a b c d e 16 15 14 13 12 11 10 9 16 D SUFFIX 1 SOIC CASE 751B-03 12 3 4 56 78 ORDERING INFORMATION BC LT BI / RBO RBI D A GND SN54LSXXJ Ceramic LOGIC DIAGRAM SN74LSXXN Plastic SN74LSXXD SOIC A a LOGIC SYMBOL B 71 2 63 5 INPUT b A B C D LT RBI C c SN54 / 74LS48 D OUTPUT BI/ BLANKING INPUT OR d a b c d e f g RBO RIPPLE-BLANKING OUTPUT e 13 12 11 10 9 15 14 4 VCC = PIN 16 f GND = PIN 8 g RIPPLE-BLANKING INPUT LAMP-TEST INPUT FAST AND LS TTL DATA 5-59

SN54 / 74LS48 PIN NAMES LOADING (Note a) HIGH LOW A, B, C, D BCD Inputs 0.5 U.L. 0.25 U.L. RBI Ripple-Blanking (Active Low) Input 0.5 U.L. 0.25 U.L. LT Lamp-Test (Active Low) Input 0.5 U.L. 0.25 U.L. BI / RBO Blanking Input or Ripple- 0.5 U.L. 0.75 U.L. Blanking Output (Active Low) 1.2 U.L. 2(1) U.L. BI Blanking (Active Low) Input 0.5 U.L. 0.25 U.L. Open-Collector 3.75 (1.25) U.L. (48) NOTES: a) Unit Load (U.L.) = 40 µA HIGH / 1.6 mA LOW b) Outut current measured at VOUT = 0.5 V Output LOW drive factor is SN54LS / 74LS48: 1.25 U.L. for Military (54), 3.75 U.L. for Commercial (74). 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NUMERICAL DESIGNATIONS — RESULTANT DISPLAYS TRUTH TABLE SN54 / 74LS48 INPUTS OUTPUTS DECIMAL OR LT RBI D C B A BI / RBO a b c d e f g NOTE FUNCTION 0 H H L L LL H HHHHHH L 1 1 H X L L LH H LHHL L L L 1 2 H X L L HL H HHLHHLH NOTES: (1) BI/RBO is wired-AND logic serving as blanking input (BI) and/or 3 H X L L HH H HHHH L L H ripple-blanking output (RBO). The blanking out (BI) must be open 4 H X L H LL H LHHL LHH or held at a HIGH level when output functions 0 through 15 are desired, and ripple-blanking input (RBI) must be open or at a HIGH 5 H X L H LH H HLHHLHH level if blanking of a decimal 0 is not desired. X=input may be HIGH or LOW. 6 H X L HHL H L LHHHHH (2) When a LOW level is applied to the blanking input (forced condition) all segment outputs go to a LOW level, regardless of the state of any 7 H X L H HH H HHH L L L L other input condition. (3) When ripple-blanking input (RBI) and inputs A, B, C, and D are at 8 H X H L LL H HHHHHHH LOW level, with the lamp test input at HIGH level, all segment outputs go to a HIGH level and the ripple-blanking output (RBO) 9 H X H L LH H HHHL LHH goes to a LOW level (response condition). (4) When the blanking input/ripple-blanking output (BI/RBO) is open or 10 H X H L H L H L L L H H L H held at a HIGH level, and a LOW level is applied to lamp-test input, all segment outputs go to a LOW level. 11 H X H L H H H L L H H L L H 12 H X H H L L H L H L L L H H 13 H X H H L H H H L L H L H H 14 H X H H H L H L L L H H H H 15 H X H H H H H L L L L L L L BI X X X X XX L LLLLLLL 2 RBI H L L L LL L LLLLLLL 3 LT L X X X X X H H H H H H H H 4 FAST AND LS TTL DATA 5-60

SN54 / 74LS48 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High a to g 54, 74 – 100 µA IOH Output Current — High BI / RBO 54, 74 – 50 µA IOL Output Current — Low a to g 54 2.0 mA 74 6.0 IOL Output Current — Low BI / RBO 54 1.6 mA 74 3.2 BI / RBO DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Symbol Parameter Limits Unit Test Conditions Min Typ Max VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 2.4 4.2 µA VCC = MIN, IOH = – 50 µA, VIN = VIH or U.L. per Truth Table IO Output Current a to g – 1.3 – 2.0 mA VCC = MIN, VO = 0.85 V VOL Input Conditioner as for VOH VOL Output LOW Voltage a to g IIH 54, 74 0.4 V IOL = 2.0 mA VCC = MIN, VIH = 2.0 V IIL Output LOW Voltage 74 0.5 V IOL = 6.0 mA VIL = VIL MAX BI / RBO 0.4 54, 74 0.5 V IOL = 1.6 mA VCC = MAX, VIH = 2.0 V Input HIGH Current 74 20 V IOL = 3.2 mA VIL = VIL MAX (Except BI / RBO) 0.1 Input LOW Current µA VCC = MAX, VIN = 2.7 V (Except BI / RBO) – 0.4 mA VCC = MAX, VIN = 7.0 V mA VCC = MAX, VIN = 0.4 V IIL Input LOW Current BI / RBO – 1.2 mA VCC = MAX, VIN = 0.4 V ICC Power Supply Current 25 38 mA VCC = MAX IOS Short Circuit Current BI / RBO (Note 1) – 0.3 –2.0 mA VCC = MAX Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C) Limits Symbol Parameter Min Typ Max Unit Test Conditions ns CL = 15 pF, RL = 4.0 kΩ tPHL Propagation Delay Time, HIGH-to-LOW 100 ns Level Output from A Input ns CL = 15 pF, RL = 6.0 kΩ ns tPLH Propagation Delay Time, LOW-to-HIGH 100 Level Output from A Input tPHL Propagation Delay Time, HIGH-to-LOW 100 Level Output from RBI Input tPLH Propagation Delay Time, LOW-to-HIGH 100 Level Output from RBI Input FAST AND LS TTL DATA 5-61

SN54/74LS51 DUAL 2-WIDE 2-INPUT/ 3-INPUT AND-OR-INVERT GATE DUAL 2-WIDE 2-INPUT / 3-INPUT AND-OR-INVERT GATE LOW POWER SCHOTTKY VCC 8 14 13 12 11 10 9 J SUFFIX CERAMIC CASE 632-08 1234567 14 GND 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-62

SN54 / 74LS51 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX Power Supply Current 1.6 mA VCC = MAX 2.8 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 12 20 CL = 15 pF 12.5 20 FAST AND LS TTL DATA 5-63

SN54/74LS54 3-2-2-3-INPUT AND-OR-INVERT GATE 3-2-2-3-INPUT AND-OR-INVERT GATE LOW POWER SCHOTTKY VCC 8 14 13 12 11 10 9 J SUFFIX CERAMIC CASE 632-08 1234567 14 GND 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-64

SN54 / 74LS54 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX Power Supply Current 1.6 mA VCC = MAX 2.0 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 12 20 CL = 15 pF 12.5 20 FAST AND LS TTL DATA 5-65

SN54/74LS55 2-WIDE 4-INPUT AND-OR-INVERT GATE 2-WIDE 4-INPUT AND-OR-INVERT GATE LOW POWER SCHOTTKY VCC 8 14 13 12 11 10 9 J SUFFIX CERAMIC CASE 632-08 1234567 14 GND 1 14 N SUFFIX 1 PLASTIC CASE 646-06 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-66

SN54 / 74LS55 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX Power Supply Current 0.8 mA VCC = MAX 1.3 ICC Total, Output HIGH Total, Output LOW Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tPLH Turn-Off Delay, Input to Output Min Typ Max ns tPHL Turn-On Delay, Input to Output ns VCC = 5.0 V 12 20 CL = 15 pF 12.5 20 FAST AND LS TTL DATA 5-67

DUAL JK NEGATIVE SN54/74LS73A EDGE-TRIGGERED FLIP-FLOP DUAL JK NEGATIVE The SN54LS / 74LS73A offers individual J, K, clear, and clock inputs. These EDGE-TRIGGERED FLIP-FLOP dual flip-flops are designed so that when the clock goes HIGH, the inputs are enabled and data will be accepted. The logic level of the J and K inputs may LOW POWER SCHOTTKY be allowed to change when the clock pulse is HIGH and the bistable will per- form according to the truth table as long as minimum set-up times are ob- served. Input data is transferred to the outputs on the negative-going edge of the clock pulse. LOGIC DIAGRAM (Each Flip-Flop) J SUFFIX CERAMIC 1 (15) CASE 632-08 CLOCK (CP) Q Q 14 13 (8) 12 (9) 1 K CLEAR 14 N SUFFIX 3 (10) 2 (6) 1 PLASTIC J CASE 646-06 14 (7) 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION MODE SELECT — TRUTH TABLE SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC OPERATING MODE INPUTS OUTPUTS CD J QQ K LOGIC SYMBOL Reset (Clear) LXXLH 14 J Q 12 7 J Q9 Toggle Hh h q q Load “0” (Reset) H l hLH 1 CP 5 CP Load “1” (Set) Hh l HL Hold Hl l qq H, h = HIGH Voltage Level 3 K CD Q 13 10 K CD Q 8 L, I = LOW Voltage Level X = Don’t Care 2 6 l, h (q) = Lower case letters indicate the state of the referenced input (or output) one set-up time l, h (q) = prior to the HIGH to LOW clock transition. VCC = PIN 4 GND = PIN 11 FAST AND LS TTL DATA 5-68

SN54 / 74LS73A GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low mA 54 4.0 74 8.0 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage Guaranteed Input HIGH Voltage for 2.0 V All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current J, K 20 Clear 60 µA VCC = MAX, VIN = 2.7 V Clock 80 J, K 0.1 Clear 0.3 mA VCC = MAX, VIN = 7.0 V Clock 0.4 IIL Input LOW Current J, K – 0.4 mA VCC = MAX, VIN = 0.4 V Clear, Clock – 0.8 IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX 6.0 mA VCC = MAX ICC Power Supply Current Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. Unit MHz AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) ns Limits ns Symbol Parameter Min Typ Max Test Conditions fMAX Maximum Clock Frequency 30 45 Figure 1 VCC = 5.0 V 15 20 Figure 1 CL = 15 pF tPLH Propagation Delay, 15 20 tPHL Clock to Output AC SETUP REQUIREMENTS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions Clock Pulse Width High Min Typ Max ns tW Clear Pulse Width 20 ns Figure 1 tW Setup Time 25 ns ts Hold Time 20 ns Figure 2 VCC = 5.0 V th Figure 1 0 FAST AND LS TTL DATA 5-69

SN54 / 74LS73A AC WAVEFORMS J or K * 1.3 V CP Q ts(L) th(L) = 0 ts(H) th(H) = 0 1.3 V tW(L) Q 1.3 V 1.3 V tPHL tW(H) 1.3 V 1 tPLH fMAX 1.3 V tPLH tPHL 1.3 V 1.3 V *The shaded areas indicate when the input is permitted to change for predictable output performance. Figure 1. Clock to Output Delays, Data Set-Up and Hold Times, Clock Pulse Width SET tW 1.3 V CLEAR 1.3 V Q tPLH tW Q 1.3 V 1.3 V 1.3 V tPHL tPHL 1.3 V 1.3 V tPLH 1.3 V Figure 2. Set and Clear to Output Delays, Set and Clear Pulse Widths FAST AND LS TTL DATA 5-70

SN54/74LS74A DUAL D-TYPE POSITIVE DUAL D-TYPE POSITIVE EDGE-TRIGGERED FLIP-FLOP EDGE-TRIGGERED FLIP-FLOP The SN54 / 74LS74A dual edge-triggered flip-flop utilizes Schottky TTL cir- LOW POWER SCHOTTKY cuitry to produce high speed D-type flip-flops. Each flip-flop has individual clear and set inputs, and also complementary Q and Q outputs. Information at input D is transferred to the Q output on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transition time of the positive-going pulse. When the clock input is at either the HIGH or the LOW level, the D input signal has no effect. LOGIC DIAGRAM (Each Flip-Flop) J SUFFIX CERAMIC SET (SD)4 (10) CASE 632-08 CLEAR (CD) 14 1 (13) 1 CLOCK Q 14 N SUFFIX 3 (11) 5 (9) 1 PLASTIC D CASE 646-06 2 (12) Q 6 (8) 14 D SUFFIX 1 SOIC CASE 751A-02 ORDERING INFORMATION MODE SELECT — TRUTH TABLE SN54LSXXJ Ceramic SN74LSXXN Plastic INPUTS OUTPUTS SN74LSXXD SOIC SD SD QQ OPERATING MODE D Set LHXHL LOGIC SYMBOL Reset (Clear) HLXLH 4 10 *Undetermined L L XHH Load “1” (Set) HH h H L 2 D SD Q 5 12 D SD Q 9 Load “0” (Reset) HH l LH * Both outputs will be HIGH while both SD and CD are LOW, but the output states are unpredictable 3 CP 11 CP if SD and CD go HIGH simultaneously. If the levels at the set and clear are near VIL maximum then we cannot guarantee to meet the minimum level for VOH. CD Q 6 CD Q 8 H, h = HIGH Voltage Level 1 13 L, I = LOW Voltage Level VCC = PIN 14 GND = PIN 7 X = Don’t Care i, h (q) = Lower case letters indicate the state of the referenced input (or output) one set-up time i, h (q) = prior to the HIGH to LOW clock transition. FAST AND LS TTL DATA 5-71

SN54 / 74LS74A GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 2.7 3.5 V or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table Input High Current 20 µA VCC = MAX, VIN = 2.7 V Data, Clock 40 IIH Set, Clear 0.1 mA VCC = MAX, VIN = 7.0 V Data, Clock 0.2 Set, Clear Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V – 0.8 IIL Data, Clock Set, Clear IOS Output Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX ICC Power Supply Current 8.0 mA VCC = MAX Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Limits Symbol Parameter Min Typ Max Unit Test Conditions fMAX Maximum Clock Frequency 25 33 MHz Figure 1 Clock, Clear, Set to Output Figure 1 tPLH 13 25 ns VCC = 5.0 V tPHL CL = 15 pF 25 40 ns AC SETUP REQUIREMENTS (TA = 25°C) Symbol Parameter Limits Unit Test Conditions tW (H) Min Typ Max ns tW (L) Clock 25 ns Figure 1 Clear, Set 25 ns ts 20 ns Figure 2 20 ns th Data Setup Time — HIGH 5.0 Figure 1 VCC = 5.0 V Data Setup Time — LOW Hold Time Figure 1 FAST AND LS TTL DATA 5-72

SN54 / 74LS74A AC WAVEFORMS D * 1.3 V 1.3 V th(L) th(H) ts(L) tW(H) ts(H) tW(L) 1.3 V 1.3 V CP 1 tPHL fMAX tPLH Q 1.3 V 1.3 V tPLH tPHL 1.3 V 1.3 V Q *The shaded areas indicate when the input is permitted to change for predictable output performance. Figure 1. Clock to Output Delays, Data Set-Up and Hold Times, Clock Pulse Width SET tW 1.3 V CLEAR 1.3 V Q tPLH tW Q 1.3 V 1.3 V 1.3 V tPHL tPHL 1.3 V 1.3 V tPLH 1.3 V Figure 2. Set and Clear to Output Delays, Set and Clear Pulse Widths FAST AND LS TTL DATA 5-73

4-BIT D LATCH SN54/74LS75 SN54/74LS77 The TTL/MSI SN54 / 74LS75 and SN54 / 74LS77 are latches used as tem- porary storage for binary information between processing units and input /out- 4-BIT D LATCH put or indicator units. Information present at a data (D) input is transferred to LOW POWER SCHOTTKY the Q output when the Enable is HIGH and the Q output will follow the data input as long as the Enable remains HIGH. When the Enable goes LOW, the 16 J SUFFIX information (that was present at the data input at the time the transition oc- 1 CERAMIC curred) is retained at the Q output until the Enable is permitted to go HIGH. CASE 620-09 16 The SN54 / 74LS75 features complementary Q and Q output from a 4-bit 1 N SUFFIX latch and is available in the 16-pin packages. For higher component density PLASTIC applications the SN54 / 74LS77 4-bit latch is available in the 14-pin package 16 CASE 648-08 with Q outputs omitted. 1 D SUFFIX CONNECTION DIAGRAMS DIP (TOP VIEW) 14 SOIC 1 Q0 Q1 Q1 E0–1 GND Q2 Q2 Q3 CASE 751B-03 16 15 14 13 12 11 10 9 J SUFFIX SN54 / 74LS75 CERAMIC CASE 632-08 1 2 3 4 56 78 Q0 D0 D1 E2–3 VCC D2 D3 Q3 Q0 Q1 E0–1 GND NC Q2 Q3 14 13 12 11 10 9 8 SN54 / 74LS77 1234567 D0 D1 E2–3 VCC D2 D3 NC PIN NAMES LOADING (Note a) HIGH LOW D1–D4 Data Inputs 0.5 U.L. 0.25 U.L. 14 N SUFFIX E0–1 Enable Input Latches 0, 1 2.0 U.L. 1.0 U.L. 1 PLASTIC E2–3 Enable Input Latches 2, 3 2.0 U.L. 1.0 U.L. CASE 646-06 Q1–Q4 Latch Outputs (Note b) 10 U.L. 14 Q1–Q4 Complimentary Latch Outputs (Note b) 10 U.L. 5 (2.5) U.L. 1 D SUFFIX 5 (2.5) U.L. SOIC NOTES: CASE 751A-02 a) 1 Unit Load (U.L.) = 40 µA HIGH. b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) Temperature Ranges. TRUTH TABLE ORDERING INFORMATION (Each latch) NOTES: SN54LSXXJ Ceramic tn tn + 1 tn = bit time before enable SN74LSXXN Plastic DQ negative-going transition SN74LSXXD SOIC HH tn+1 = bit time after enable LL negative-going transition FAST AND LS TTL DATA 5-74

SN54 / 74LS75 LOGIC SYMBOLS SN54/74LS75 SN54/74LS77 2367 1 25 6 D0 D1 D2 D3 VCC = PIN 5 D0 D1 D2 D3 VCC = PIN 4 13 E0–1 GND = PIN 12 12 E0–1 GND = PIN 11 3 E2–3 4 E2–3 NC = PIN 7, 10 Q0 Q1 Q2 Q3 Q0 Q0 Q1 Q1 Q2 Q2 Q3 Q3 14 13 9 8 16 1 15 14 10 11 9 8 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 V or VIL per Truth Table 2.7 3.5 VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 VIN = VIL or VIH V IOL = 8.0 mA per Truth Table IIH Input HIGH Current D Input 20 µA VCC = MAX, VIN = 2.7 V E Input 80 D Input 0.1 mA VCC = MAX, VIN = 7.0 V E Input 0.4 IIL Input LOW Current D Input – 0.4 mA VCC = MAX, VIN = 0.4 V E Input –1.6 IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX 12 mA VCC = MAX ICC Power Supply Current Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Symbol Parameter Min Limits Max Unit Test Conditions Propagation Delay, Data to Q ns tPLH Propagation Delay, Data to Q Typ 27 ns VCC = 5.0 V tPHL Propagation Delay, Enable to Q 17 ns CL = 15 pF Propagation Delay, Enable to Q 15 ns tPLH 9.0 20 tPHL 15 12 tPLH 7.0 27 tPHL 25 15 tPLH 14 30 tPHL 15 16 7.0 FAST AND LS TTL DATA 5-75

SN54 / 74LS77 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 Guaranteed Input LOW Voltage for 74 0.8 V All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH 74 V or VIL per Truth Table 2.7 3.5 VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, 74 0.35 0.5 VIN = VIL or VIH V IOL = 8.0 mA per Truth Table IIH Input HIGH Current D Input 20 µA VCC = MAX, VIN = 2.7 V E Input 80 D Input 0.1 mA VCC = MAX, VIN = 7.0 V E Input 0.4 IIL Input LOW Current D Input – 0.4 mA VCC = MAX, VIN = 0.4 V E Input –1.6 IOS Short Circuit Current (Note 1) – 20 –100 mA VCC = MAX 13 mA VCC = MAX ICC Power Supply Current Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Symbol Parameter Min Limits Max Unit Test Conditions Propagation Delay, Data to Q ns tPLH Propagation Delay, Enable to Q Typ 19 ns VCC = 5.0 V tPHL 17 CL = 15 pF 11 tPLH 9.0 18 tPHL 18 10 10 FAST AND LS TTL DATA 5-76

SN54/74LS75 D SN54/74LS77 LOGIC DIAGRAM DATA Q (SN54/74LS75 ONLY) ENABLE Q TO OTHER LATCH GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 – 55 25 125 °C 74 0 25 70 IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 4.0 mA 74 8.0 AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V) Symbol Parameter Min Limits Max Unit Test Conditions tW Enable Pulse Width High 20 Typ ns VCC = 5.0 V ts Setup Time 20 ns th Hold Time 0 ns AC WAVEFORMS D 1.3 V 1.3 V ts th E 1.3 V 1.3 V 1.3 V tPLH Q tPLH 1.3 V tPHL 1.3 V Q tPHL 1.3 V tPHL 1.3 V tPLH tPHL tPLH DEFINITION OF TERMS SETUP TIME (ts) — is defined as the minimum time required for the correct logic level to be present at the logic input prior to the clock transition from HIGH-to-LOW in order to be recognized and transferred to the outputs. HOLD TIME (th) — is defined as the minimum time following the clock transition from HIGH-to-LOW that the logic level must be maintained at the input in order to ensure continued recognition. A negative HOLD TIME indicates that the correct logic level may be released prior to the clock transition from HIGH-to-LOW and still be recognized. FAST AND LS TTL DATA 5-77

DUAL JK FLIP-FLOP SN54/74LS76A WITH SET AND CLEAR DUAL JK FLIP-FLOP The SN54 / 74LS76A offers individual J, K, Clock Pulse, Direct Set and Di- WITH SET AND CLEAR rect Clear inputs. These dual flip-flops are designed so that when the clock LOW POWER SCHOTTKY goes HIGH, the inputs are enabled and data will be accepted. The Logic Level of the J and K inputs will perform according to the Truth Table as long as mini- mum set-up times are observed. Input data is transferred to the outputs on the HIGH-to-LOW clock transitions. MODE SELECT — TRUTH TABLE J SUFFIX CERAMIC INPUTS OUTPUTS CASE 620-09 OPERATING MODE 16 1 SD CD J K Q Q Set LHXXHL Reset (Clear) *Undetermined HLXXLH Toggle Load “0” (Reset) L L XXHH N SUFFIX Load “1” (Set) PLASTIC Hold HHh h q q CASE 648-08 HH l h LH HHh l HL 16 1 HH l l qq *Both outputs will be HIGH while both SD and CD are LOW, but the output states are unpredictable 16 D SUFFIX if SD and CD go HIGH simultaneously. 1 SOIC H,h = HIGH Voltage Level CASE 751B-03 L,l = LOW Voltage Level X = Immaterial l, h (q) = Lower case letters indicate the state of the referenced input (or output) one setup time prior to the HIGH-to-LOW clock transition ORDERING INFORMATION SN54LSXXJ Ceramic SN74LSXXN Plastic SN74LSXXD SOIC LOGIC DIAGRAM LOGIC SYMBOL CLOCK (CP) Q Q 27 CLEAR (CD) SET (SD) 16 K SD Q 15 12 K SD Q 11 J K 1 CP 6 CP 4 J CD Q 14 9 J CD Q 10 3 8 VCC = PIN 5 GND = PIN 13 FAST AND LS TTL DATA 5-78