The MC74AC138/74ACT138 is a high-speed 1-of-8 decoder/demultiplexer. Thisdevice 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 justthree MC74AC138/74ACT138 devices or a 1-of-32 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
• ACT138 Has TTL Compatible Inputs
• These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.