Description

The HD74AC139/HD74ACT139 is a high-speed, dual 1-of-4 decoder/demultiplexer. The device has two independent

decoders, each accepting two inputs and providing four mutually-exclusive active-Low outputs. Each decoder has an

active-Low Enable input which can be used as a data input for a 4-output demultiplexer. Each half of the

HD74AC139/HD74ACT139 can be used as a function generator providing all four minterms of two variables.

Features

• Multifunction Capability

• Two Completely Independent 1-of-4 Decoders

• Active Low Mutually Exclusive Outputs

• Outputs Source/Sink 24 mA

• HD74ACT139 has TTL-Compatible Inputs

• Ordering Information: Ex. HD74AC139