CD74AC138集成电路（IC）的信号开关多路复用器解码器规格书PDF中文资料

CD74AC138属于集成电路（IC）的信号开关多路复用器解码器。由德州仪器制造生产的CD74AC138信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。

1 Features

• AC types feature 1.5V to 5.5V operation and

balanced noise immunity at 30 of the supply

voltage

• Speed of bipolar F, AS, and S, with significantly

reduced power consumption

• Designed specifically for high-speed memory

decoders and data-transmission systems

• Incorporate three enable inputs to simplify

cascading and/or data reception

• Balanced propagation delays

• ±24mA output drive current

– Fanout to 15 F Devices

• SCR-latchup-resistant CMOS process and circuit

design

• Exceeds 2kV ESD protection per MIL-STD-883,

method 3015

2 Description

The ’AC138 decoders/demultiplexers are designed for

high-performance memory-decoding and data-routing

applications that require very short propagation-delay

times. In high-performance memory systems, these

decoders can be used to minimize the effects of

system decoding.