MC74AC138DG Datasheet

Encoders, Decoders, Multiplexers & Demultiplexers


The MC74AC138DG /74ACT138 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 MC74AC138/74ACT138 devices or a 1−of−32 decoder using four MC74AC138/74ACT138 devices and one inverter. MC74AC138DG Features • Demultiplexing Capability• Multiple Input Enable for Easy Expansion• Active LOW Mutually Exclusive Outputs• Outputs Source/Sink 24 mA• MC74AC138DG Has TTL Compatible Inputs


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Manufacturer information

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