TLF5299

January 1988

MM54HC20MM74HC20

Dual 4-Input NAND Gate

General Description

These NAND gates utilize advanced silicon-gate CMOS

technology to achieve operating speeds similar to LS-TTL

gates with the low power consumption of standard CMOS

integrated circuits All gates have buffered outputs All de-

vices have high noise immunity and the ability to drive 10

LS-TTL loads The 54HC74HC logic family is functionally

as well as pin-out compatible with the standard 54LS74LS

logic family All inputs are protected from damage due to

ground

Features

Y

Typical propagation delay 8 ns

Y

Wide power supply range 2 – 6V

Y

Low quiescent current 20 mA maximum (74HC Series)

Y

Low input current 1 mA maximum

Y

Fanout of 10 LS-TTL loads

Connection and Logic Diagrams

Dual-In-Line Package

TLF5299 – 1

Top View

Order Number MM54HC20 or MM74HC20

TLF5299 – 2

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A