TLF5300

January 1988

MM54HC27MM74HC27

Triple 3-Input NOR Gate

General Description

These NOR gates utilize advanced silicon-gate CMOS tech-

nology to achieve operating speeds similar to LS-TTL gates

with the low power consumption of standard CMOS inte-

grated circuits All gates have buffered outputs providing

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 static dis-

Features

Y

Typical propagation delay 8 ns

Y

Wide operating supply voltage range 2 – 6V

Y

Y

Low quiescent supply current 20 mA maximum

(74HC Series)

Y

Fanout of 10 LS-TTL Loads

Connection and Logic Diagrams

Dual-In-Line Package

TLF5300 – 1

Top View

Order Number MM54HC27 or MM74HC27

TLF5300 – 2

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A