SN74LS139 Overview
DUAL 1-OF-4 DECODER/ DEMULTIPLEXER The LSTTL/MSI SN54/74LS139 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 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 pletely patible with all Motorola TTL families. • Schottky Process for High Speed • Multifunction Capability • Two pletely Independent 1-of-4 Decoders • Active Low Mutually Exclusive Outputs • Input Clamp Diodes Limit High Speed Termination Effects • ESD > 3500 Volts CONNECTION DIAGRAM DIP (TOP VIEW)
