MC74AC138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 MC74AC138/74ACT138 is a high-speed 1-of-8 decoder/demultiplexer. Thisdevice is ideally suited for high-speed bipolar memory chip select address decoding.The multiple input enables allow parallel expansion to a 1-of-24 decoder using justthree MC74AC138/74ACT138 devices or a 1-of-32 decoder using four MC74AC138/ 74ACT138 devices and one inverter.

特性 Features

• Demultiplexing Capability
• Multiple Input Enable for Easy Expansion
• Active LOW Mutually Exclusive Outputs
• Outputs Source/Sink 24 mA
• ACT138 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

MC74AC138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MC74AC138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。