WMSIC Electronic Components

LX SN74LS74DR(LX) SN74LS74DR

ModelSN74LS74DR(LX)
PackageSOP14
BrandLX
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LX SN74LS74DR(LX)
Type
LX
Minimum package
2500 圆盘

Technical parameters

Electronic Component
positionsand positions
Electronic Component
Electronic Component
Electronic Component
LX
Electronic Component
SN74LS74DR(LX)
Electronic Component
1
Package
SOP14
Type
D
Electronic Component
Flip-Flop
Electronic Component
74LS
Electronic Component
0.26g
Electronic Component
2
Electronic Component
Electronic Component
Electronic Component
1
Electronic Component
BM0264498244
Operating Temperature
40℃~+125℃
Operating Voltage
2V~6V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SN74LS74DR(LX) D型触发器产品概述

一、产品基本定位与规格概览

SN74LS74DR(LX)是灵星芯微(LX)推出的双1位D型触发器,属于经典74LS系列数字逻辑器件,采用SOP14贴片封装。作为数字电路中核心的时序逻辑单元,该器件集成2个独立的D型触发器,每个触发器具备上升沿触发、互补输出(Q/Q非)、异步置位(S)与异步复位(R)功能,是实现数据锁存、时序控制的基础组件。

二、核心功能与触发特性

SN74LS74DR(LX)的核心功能聚焦于数据同步锁存与异步状态控制,具体特性如下:

  1. 上升沿触发锁存:仅在时钟(CLK)信号的上升沿(从低到高跳变)时,将D输入端口的当前数据锁存到输出Q;下降沿或稳态时,输出保持原状态,确保数据同步性。
  2. 异步置位/复位:每个触发器配备独立的异步置位端(S,低电平有效)和异步复位端(R,低电平有效)——无需时钟触发,S低电平时Q直接置1,R低电平时Q直接置0,可快速初始化或清除状态。
  3. 互补输出兼容:每个触发器同时输出Q(原数据)与Q非(反相数据),无需额外反相器即可满足逻辑扩展需求(如级联、驱动互补负载)。

三、电气参数与性能优势

该器件的电气参数兼顾高速、低功耗、宽适配性,关键参数及实际优势如下:

  • 宽电压范围:工作电压2V~6V,兼容3.3V、5V主流数字电源系统,适配不同电路设计(如电池供电设备、5V工业电路);
  • 高速时钟能力:最大时钟频率82MHz,满足中高速数字电路(如10Mbps以下通信、简单计数器)的时序要求;
  • 强驱动能力:灌电流(IOL)与拉电流(IOH)均为5.2mA,可直接驱动LED、小型逻辑门等负载,无需额外驱动电路;
  • 低静态功耗:静态电流(Iq)仅40uA,待机状态下功耗极低,适合电池供电或低功耗场景;
  • 工业级宽温:工作温度范围-40℃~+125℃,覆盖户外、工业现场等极端环境,可靠性强。

四、封装设计与兼容性

SN74LS74DR(LX)采用SOP14贴片封装,具备以下设计优势:

  • 小体积高密度:14引脚贴片封装,尺寸紧凑(约5.2mm×4.0mm),适合小型化PCB设计(如便携式设备、工业控制板);
  • 标准引脚兼容:引脚布局与国际标准74LS74完全一致,可直接替换进口器件(如TI SN74LS74DR),无需修改电路;
  • 贴片安装便捷:支持自动化贴片生产,提高生产效率,降低人工成本。

五、典型应用场景

作为通用D型触发器,SN74LS74DR(LX)广泛应用于各类数字电路,典型场景包括:

  1. 数字计数器:级联多个触发器实现二进制/十进制计数(如4位计数器仅需2个该器件);
  2. 数据寄存器:锁存并行数据(如8位数据需4个该器件),用于数据暂存与传输;
  3. 脉冲分频器:通过级联(Q输出接下一级CLK)实现2^n分频(如2分频、4分频);
  4. 时序逻辑控制:构成简单状态机(如交通灯时序、按键防抖);
  5. 工业控制电路:宽温特性适配PLC、传感器接口等工业场景;
  6. 消费电子:如遥控器、小型家电的按键扫描、状态指示逻辑。

六、品牌与选型价值

灵星芯微(LX)作为国产半导体厂商,SN74LS74DR(LX)具备以下选型价值:

  • 性能兼容进口:完全符合74LS系列标准,电气参数与功能无差异,替代进口器件无需降额;
  • 性价比突出:国产器件成本优势明显,适合批量采购降低BOM成本;
  • 供货稳定:具备自主产能,避免进口器件断供风险,适合长期项目;
  • 技术支持完善:提供 datasheet、应用案例等技术资料,助力快速设计。

综上,SN74LS74DR(LX)是一款兼顾性能、成本与可靠性的通用D型触发器,可满足从消费电子到工业控制的多场景时序逻辑需求。

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