54AC139 Datasheet | National Semiconductor

.. - 54ACT139 Dual 1-of-4 Decoder/Demultiplexer August 1998 - 54ACT139 Dual 1-of-4 Decoder/Demultiplexer 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. n n n n n n Multifunction capability Two pletely independent 1-of-4 decoders Active LOW mutually exclusive outputs...