The MC74AC138/74ACT138 is a highâspeed 1âofâ8 decoder/demultiplexer. This device is ideally suited for highâspeed bipolar memory chip select address decoding.
The multiple input enables allow parallel expansion to a 1âofâ24 decoder using just three MC74AC138/74ACT138 devices or a 1âofâ32 decoder using four MC74AC138/74ACT138 devices and one inverter.
⢠Demultiplexing Capability
⢠Multiple Input Enable for Easy Expansion
⢠Active LOW Mutually Exclusive Outputs
⢠Outputs Source/Sink 24 mA
⢠â²ACT138 Has TTL Compatible Inputs
⢠These devices are available in Pbâfree package(s). Specifications herein apply to both standard and Pbâfree devices. Please see our website at www.onsemi.com for specific Pbâfree orderable part numbers, or contact your local ON Semiconductor sales office or representative.
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