SN54/74LS20 DUAL 4-INPUT NAND GATE DUAL 4-INPUT NAND GATE VCC 14 1 LOW POWER SCHOTTKY 13 2 12 11 3 4 10 5 9 6 8 J SUFFIX CERAMIC CASE 632-08 7 14 GND 1 N SUFFIX PLASTIC CASE 646-06 14 1 14 1 D SUFFIX SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 – 55 0 25 25 125 70 °C IOH Output Current — High 54, 74 – 0.4 mA IOL Output Current — Low 54 74 4.0 8.0 mA FAST AND LS TTL DATA 5-29 SN54/74LS20 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Min Parameter VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage VOH Output HIGH Voltage VOL Output LOW Voltage IIH Input HIGH Current IIL Input LOW Current IOS Short Circuit Current (Note 1) ICC Power Supply Current Total, Output HIGH Total, Output LOW Typ Max 2.0 54 0.7 74 0.8 – 0.65 – 1.5 Unit Test Conditions V Guaranteed Input HIGH Voltage for All Inputs V Guaranteed Input LOW Voltage for All Inputs V VCC = MIN, IIN = – 18 mA 54 2.5 3.5 V 74 2.7 3.5 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table 54, 74 0.25 0.4 V IOL = 4.0 mA 74 0.35 0.5 V IOL = 8.0 mA – 20 VCC = VCC MIN, VIN = VIL or VIH per Truth Table 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V – 0.4 mA VCC = MAX, VIN = 0.4 V –100 mA VCC = MAX 0.8 mA VCC = MAX 2.2 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Limits Symbol Parameter Min Typ Max Unit Test Conditions VCC = 5.0 V CL = 15 pF tPLH Turn-Off Delay, Input to Output 9.0 15 ns tPHL Turn-On Delay, Input to Output 10 15 ns FAST AND LS TTL DATA 5-30