器件名称:
MC74AC259NG
功能描述:
8−Bit Addressable Latch
文件大小:
121KB 共11页
简 介:
MC74AC259, MC74ACT259 8Bit Addressable Latch The MC74AC259/74ACT259 is a highspeed 8bit addressable latch designed for general purpose storage applications in digital systems. It is a multifunctional device capable of storing single line data in eight addressable latches, and also a 1of8 decoder and demultiplexer with active HIGH outputs. The device also incorporates an active LOW Common Clear for resetting all latches, as well as an active LOW Enable. It is functionally identical to the ALS259 8bit addressable latch. http://onsemi.com SerialtoParallel Conversion Eight Bits of Storage with Output of Each Bit Available Random (Addressable) Data Entry Active High Demultiplexing or Decoding Capability Easily Expandable Common Clear PbFree Packages are Available VCC 16 MR 15 E 14 D 13 Q7 12 Q6 11 Q5 10 Q4 9 16 1 PDIP16 N SUFFIX CASE 648 16 1 SOIC16 D SUFFIX CASE 751B 16 1 SOEIAJ16 M, MEL SUFFIX CASE 966 DEVICE MARKING INFORMATION See general marking information in the device marking section on page 9 of this data sheet. 1 A0 2 A1 3 A2 4 Q0 5 Q1 6 Q2 7 Q3 8 GND ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 9 of this data sheet. Figure 1. Pinout: 16Lead Packages Conductors (Top View) A0 A1 A2 E D MR Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Figure 2. Logic Symbol MODE SELECT TABLE E L H L H MR H H L L Mode Addressable Latch Memory Active HIGH 8Channel Demultiplexer Clear H = HIGH Voltage Level L = LOW Vo……
