View mc74hc20 datasheet:

MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC74HC20 Dual 4-Input NAND Gate High–Performance Silicon–Gate CMOS N SUFFIX The MC74HC20 is identical in pinout to the LS20. The device inputs are PLASTIC PACKAGE compatible with standard CMOS outputs; with pullup resistors, they are 14 CASE 646–06 compatible with LSTTL outputs. 1 • Output Drive Capability: 10 LSTTL Loads • Outputs Directly Interface to CMOS, NMOS, and TTL D SUFFIX • Operating Voltage Range: 2 to 6 V 14 SOIC PACKAGE • Low Input Current: 1 µA CASE 751A–03 1 • High Noise Immunity Characteristic of CMOS Devices • In Compliance with the Requirements Defined by JEDEC Standard No. 7A ORDERING INFORMATION • Chip Complexity: 28 FETs or 7 Equivalent Gates MC74HCXXN Plastic MC74HCXXD SOIC LOGIC DIAGRAM PIN ASSIGNMEN