74HCT157DR2G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

74HCT157DR2G属于集成电路（IC）的信号开关多路复用器解码器。由安森美半导体公司制造生产的74HCT157DR2G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。

The 74HCT157 is identical in pinout to the LS157. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.

This device routes 2 nibbles (A or B) to a single port (Y) as determined by the Select input. The data is presented at the outputs in noninverted form. A high level on the Output Enable input sets all four Y outputs to a low level.

特性 Features

• Output Drive Capability: 10 LSTTL Loads

• TTL/NMOS−Compatible Input Levels

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 V

• Low Input Current: 1.0 A

• High Noise Immunity Characteristic of CMOS Devices

• In Compliance with the Requirements Defined by JEDEC Standard No. 7A

• ESD Performance: HBM  2000 V; Machine Model  200 V

• Chip Complexity: 82 FETs or 20.5 Equivalent Gates

• These are Pb−Free Devices