HD74AC139

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


Pinout




Specifications

Item	Symbol	Max	Unit	Condition
Maximum quiescent supply current	ICC	80	A	VIN = VCC or ground, VCC = 5.5 V, Ta = Worst case
Maximum quiescent supply current	ICC	8.0	A	VIN = VCC or ground, VCC = 5.5 V, Ta = 25°C
Maximum ICC/input (HD74ACT365)	ICCT	1.5	mA	VIN = VCC 2.1 V, VCC = 5.5 V, Ta = Worst case

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.