1 Features

• Operating voltage range of 4.5V to 5.5V

• Outputs can drive up to 10 LSTTL loads

• Low power consumption, 20-μA max ICC

• Typical tpd = 10ns

• ±4-mA output drive at 5V

• Low input current of 1μA max

• Inputs are TTL-Voltage compatible

2 Description

These devices contain four independent 2-input NOR

gates. They perform the Boolean function Y = A • B or

Y = A + B in positive logic.