MC74AC139数据手册集成电路（IC）的信号开关多路复用器解码器规格书PDF

描述 Description

The MC74AC139/74ACT139 is a high-speed, dual 1-of-4 decoder/demultiplexer The device has two independent decoders, each accepting two inputs and providing four mutually-exclusive active-LOW outputs. Each decoder has an active-LOWEnable input which can be used as a data input for a 4-output demultiplexer. Eachhalf of the MC74AC139/74ACT139 can be used as a function generator providingfour minterms of two variables.

特性 Features

• Multifunction Capability
• Two Completely Independent 1-of-4 Decoders
• Active LOW Mutually Exclusive Outputs
• Outputs Source/Sink 24 mA
• ACT139 Has TTL Compatible Inputs
• These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.

简介

MC74AC139属于集成电路（IC）的信号开关多路复用器解码器。由制造生产的MC74AC139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。