MC74AC161数据手册集成电路（IC）的计数器除法器规格书PDF

描述 Description

The MC74AC161/74ACT161 and MC74AC163/74ACT163 are high-speedsynchronous modulo-16 binary counters. They are synchronously presettable forapplication in programmable dividers and have two types of Count Enable inputsplus a Terminal Count output for versatility in forming synchronous multistagecounters. The MC74AC161/74ACT161 has an asynchronous Master Reset inputthat overrides all other inputs and forces the outputs LOW. The MC74AC163/ 74ACT163 has a Synchronous Reset input that overrides counting and parallelloading and allows the outputs to be simultaneously reset on the rising edge ofthe clock.

特性 Features

• Synchronous Counting and Loading
• High-Speed Synchronous Expansion
• Typical Count Rate of 125 MHz
• Outputs Source/Sink 24 mA
• ACT161 andACT163 Have 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

MC74AC161属于集成电路（IC）的计数器除法器。由制造生产的MC74AC161计数器，除法器计数器和除法器 IC 是数字逻辑器件，可对输入发生的逻辑转换进行计数，然后使用多个并行输出重新发送累加的计数，和/或生成单个输出信号转换，从而对应用某些整数数量输入信号转换进行响应。除了简单的事件计数，它们还可用于各种频率合成应用。