54ACT139F Datasheet PDF - National

●General Description

●The ’AC/’ACT139 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 ’AC/’ACT139 can be used as a function generator providing all four minterms of two variables.

●Features

●■ ICC reduced by 50%

●■ Multifunction capability

●■ Two completely independent 1-of-4 decoders

●■ Active LOW mutually exclusive outputs

●■ Outputs source/sink 24 mA

●■ ’ACT139 has TTL-compatible inputs

●■ Standard Military Drawing (SMD)

●   — ’AC139: 5962-87623

●   — ’ACT139: 5962-87553