SN74HC157DBR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

SN74HC157DBR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SN74HC157DBR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

• Wide operating voltage range of 2V to 6V

• Outputs can drive up to 15 LSTTL loads

• Low power consumption, 80μA max ICC

• Typical tpd = 11ns

• ±6mA output drive at 5V

• Low input current of 1μA max

2 Description

The SNx4HC157 contains four data selectors/

multiplexers to select one of two data sources. All

channels are controlled by the same address select

(A/B) input, and strobe (G) input. A high level at the

strobe terminal forces all outputs low.