74AC139 Datasheet - Fairchild Semiconductor

74AC139 Dual 1-of-4 Decoder/Demultiplexer

The AC/ACT138 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 AC/ACT138 devices or a 1-of-32 decoder using four AC/ACT138 .

74AC139 Features

* s ICC reduced by 50% s Demultiplexing capability s Multiple input enable for easy expansion s Active LOW mutually exclusive outputs s Outputs source/sink 24 mA s ACT138 has TTL-compatible inputs Ordering Code: Order Number 74AC138SC 74AC138SJ 74AC138MTC 74AC138PC 74ACT138SC 74ACT138SJ 74ACT138PC Pa

74AC139_FairchildSemiconductor.pdf