74ACT138SJ

1 - 8解码器/多路解复用器 1-of-8 Decoder/Demultiplexer

General Description

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 devices and one inverter.

Features

■ ICC reduced by 50%

■ Demultiplexing capability

■ Multiple input enable for easy expansion

■ Active LOW mutually exclusive outputs

■ Outputs source/sink 24 mA

■ ACT138 has TTL-compatible inputs