专题sn74ls74an引脚图及其功能

SN54/74LS90 SN54/74LS92 SN54/74LS93介绍

SN54/74LS90、SN54/74LS92和SN54/74LS 93为高速4位波纹型计数器划分为两部分。每个计数器都有一个除以二部分和一个除以五（LS90）、除以六（LS92）或除以八（LS93）部分，其由时钟输入上的高到低转换触发。每个部分可以单独使用或捆绑在一起（Q至CP）以形成BCD、双五进制、模12或模16计数器。所有计数器具有2输入门控主复位（

74LS90引脚图及引脚功能资料免费下载

74LS90逻辑电路图如图3.6-1所示，它由四个主从JK触发器和一些附加门电路组成，整个电路可分两部分，其中FA触发器构成一位二进制计数器；FD、FC、FB构成异步五进制计数器，在74LS90计数器电路中，设有专用置“0”端R1、R2和置位（置“9”）端S1、S2。

74LS245芯片的引脚图与用法

74ls74

74ls详细资料

SN74LS193N

SN74LS193N datesheet

74ls138引脚图-74ls138管脚图及功能真值表

74系列芯片引脚图

SN54LS292,SN54LS294,SN74LS292,

SN54LS292,

SN54LS11,SN54S11,SN74LS11,SN74

These devices contain three independent 3-input AND gates. The SN54LS11 and SN54S11 are characterized for operation over the full military temperature range of -55°C to 125°C. Th

SN54LS07,SN74LS07,SN74LS17,PDF(Hex Buffers/Drivers )

These hex buffers/drivers feature high-voltage open-collector outputs to interface with high-level circuits or for driving high-current loads. They are also characterized for use a

SN54LS06, SN74LS06, SN74LS16,p

These hex inverter buffers/drivers feature high-voltage open-collector outputs to interface with high-level circuits (such as MOS), or for driving high-current loads, and also are

74LS74

本帖最后由 gk320830 于 2015-3-9 15:46 编辑

74LS91/SN74LS91/SN5491 pdf dat

74LS91/SN74LS91 pdf datasheet The 74LS91/SN74LS91/SN5491 is a 8-BIT SHIFT REGISTERS - Texas Instruments

SN74LS90/SN74LS92/SN74LS93 pdf

The SN74LS90/SN74LS92/SN74LS93 are high-speed4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two section and either a divide-by-five (LS90),

74LS688/74LS682/74LS684/74LS68

74LS688/74LS682/74LS684/74LS685/74LS687 pdf datasheet