SN74HCT139D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

SN74HCT139D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SN74HCT139D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

• Operating voltage range of 4.5 V to 5.5 V

• Outputs can drive up to 10 LSTTL loads

• Low power consumption, 80-μA max ICC

• Typical tpd = 10 ns

• ±4-mA output drive at 5 V

• Low input current of 1 μA max

• Inputs are TTL-voltage compatible

• Designed specifically for high-speed memory

decoders and data-transmission systems

• Incorporate two enable inputs to simplify

cascading and/or data reception

2 Description

The ’HCT139 devices are designed for highperformance

memory-decoding or data-routing

applications requiring very short propagation delay

times.