Datasheet SN74LS139N Description
    The LSTTL/MSI SN74LS139 is a high speed Dual 1-of-4 Decoder/Demultipexer. The devices 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 halt of the LS139 can be used as a function generator providing all four minterms of two variables. The
LS139 is fabricated with the Schottky barrier diode process for high speed and is completely compatible with
all Motorola TTL families.

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