General Description

The MM74HCT05 is a logic function fabricated by using

advanced silicon-gate CMOS technology, which provides

the inherent benefits of CMOS—low quiescent power and

wide power supply range. The device is also input and output

characteristic and pinout compatible with standard

DM74LS logic families. The MM74HCT05 open drain Hex

Inverter requires the addition of an external resistor to perform

a wire-NOR function.

All inputs are protected from static discharge damage by

internal diodes to VCC and ground.

MM74HCT devices are intended to interface between TTL

and NMOS components and standard CMOS devices.

These parts are also plug-in replacements for LS-TTL

devices and can be used to reduce power consumption in

existing designs.

Features

Open drain for wire-NOR function

LS-TTL pinout and threshold compatible

Fanout of 10 LS-TTL loads

Typical propagation delays:

tPZL (with 1 kΩ resistor) 10 ns

tPLZ (with 1 kΩ resistor) 8 ns