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HD74HC138

Hitachi Semiconductor
Part Number HD74HC138
Manufacturer Hitachi Semiconductor
Description 3-to-8-line Decoder/Demultiplexer
Published Mar 23, 2005
Detailed Description HD74HC138 3-to-8-line Decoder/Demultiplexer Description The HD74HC138 has 3 binary select inputs (A, B and C). If the d...
Datasheet PDF File HD74HC138 PDF File

HD74HC138
HD74HC138

Overview
HD74HC138 3-to-8-line Decoder/Demultiplexer Description The HD74HC138 has 3 binary select inputs (A, B and C).
If the device is enabled these inputs determine which one of the eight normally high outputs will go low.
Two active low and one active high enables (G1, G2A and G2B) are provided to ease the cascading of decoders.
Features • • • • • High Speed Operation: tpd (A, B, C to Y) = 16.
5 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 V to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs Enable G1 X X L H H H H H H H H G2A X H X L L L L L L L L G2B H X X L L L L L L L...


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