HD74AC138/HD74ACT138
1-of-8 Decoder/Demultiplexer
ADE-205-368 (Z)
1st. Edition
Sep. 2000
Description
The HD74AC138/HD74ACT138 is a high-speed 1-of-8 decoder/demultiplexer. This device is ideally
suited for high-speed bipolar memory chip select address decoding. The multiple input enables allow
parallel expansion to a 1-of-24 decoder using just three HD74AC138/HD74ACT138 devices or a 1-of-32
decoder using four HD74AC138/HD74ACT138 devices and one inverter.
Features
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Demultiplexing Capability
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Multiple Input Enable for Easy Expansion
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Active LOW Mutually Exclusive Outputs
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Outputs Source/Sink 24 mA
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HD74ACT138 has TTL-Compatible Inputs
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