74AHC164中文资料standard-logic数据手册Diodes规格书

描述 Description

The 74AHC164 is a serial input 8-bit edge-triggered shift register that has outputs from each of eight stages.

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\tSERIAL DATA INPUT PINS

\tThe serial input data is entered at pin SDA or pin SDB as these are logically ANDED. Either input could be used as an active HIGH enable with data entry on the other pin. If a single input is desired, the pins can be tied together or the unused input can be tied HIGH.

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\tDATA ENTRY

\tData is shifted into Q0 from the serial input pins on each LOW to HIGH transition of the CP pin. Also during the CP edge the data is transferred from each Qn to Qn+1. The serial data on pins DSA and DSB must be stable before and after the CP rising edge to meet the set-up and hold timing requirements.

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\tRESET

\tWhen asserted LOW the Master Reset (MR ) pin sets all Qn to LOW. This action does not depend on the condition of serial input or clock pins. The MR must be asserted HIGH for a recovery time before the next CP positive edge pulse.

特性 Features

Wide Supply Voltage Range from 2.0V to 5.5V
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\t\tSinks or Sources 8mA at VCC = 4.5V
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\t\tCMOS Low Power Consumption
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\t\tSchmitt Trigger Action at All Inputs
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\t\tESD Protection Exceeds JESD 22
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\t\t\t\t200-V Machine Model (A115)
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\t\t\t\t2000-V Human Body Model (A114)
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\t\t\t\tExceeds 1000-V Charged Device Model (C101)
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\t\tRange of Package Options SO-14 and TSSOP-14
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\t\tTotally Lead-Free & Fully RoHS Compliant 
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\t\tHalogen and Antimony Free. “Green” Device

应用 Application

General Purpose Logic
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\t\tWide Array of Products Such as:
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\t\t\t\tPCs, Networking, Notebooks, Netbooks
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\t\t\t\tComputer Peripherals, Hard Drives, CD/DVD ROM
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\t\t\t\tTV, DVD, DVR, Set-Top Box

简介

74AHC164属于集成电路（IC）的移位寄存器。由制造生产的74AHC164移位寄存器移位寄存器是低级逻辑器件，通常用于在串行和并行方式之间转换数字逻辑信号形式的数据，或在数字字内移动数据位的位置。移位寄存器通常使用集成到一个设备中的一组触发器来实现，常用于集成度更高的逻辑器件，但仍可用于 I/O 扩展等应用，在这些应用中离散形式的函数可能会非常有用。