WMSIC Electronic Components

LX SN74LS47N(LX) SN74LS47N

ModelSN74LS47N(LX)
PackageDIP16
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 26+

Available for RFQ

Technical data

Product details

17 specifications

Core information

Product name
LX SN74LS47N(LX)
Type
LX
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LX
Electronic Component
SN74LS47N(LX)
Electronic Component
1
Package
DIP16
Electronic Component
LED Segment Display Driver
Electronic Component
1.603g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0264498272
Operating Temperature
40℃~+125℃
Operating Voltage
2V~6V
Electronic Component
Electronic Component
Electronic Component
1000

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

SN74LS47N(LX) 七段数码管驱动芯片产品概述

一、产品基本信息

SN74LS47N(LX)是灵星芯微(LX)推出的经典七段数码管驱动芯片,专为共阳极数码管设计,采用DIP-16直插封装,兼容传统手工焊接、原型开发及标准化PCB设计。该芯片核心功能是将4位BCD码(二进制编码十进制)转换为七段数码管的段驱动信号,无需额外编码电路即可实现0~9数字的清晰显示,是各类数字显示设备的基础核心器件。

二、关键电气参数

SN74LS47N(LX)的电气参数覆盖了宽范围应用需求,核心参数如下:

  • 工作电压范围:2V~6V,兼容3.3V、5V等常见低压系统,无需电平转换;
  • 工作温度范围:-40℃~+125℃,满足工业级环境(如车载、户外设备)及极端温度场景;
  • 输出特性:输出低电平VOL≤0.4V(输出电流IOUT=8mA),可直接驱动共阳极数码管段;输出高电平VOH≥3.5V(输出电流IOUT=-200μA),抗干扰能力强;
  • 输入特性:输入低电平IIL≤0.4mA,输入高电平IIH≤20μA,兼容TTL逻辑电平;
  • 驱动能力:单段最大驱动电流可达10mA,可满足普通七段数码管(如0.56英寸、1英寸)的显示需求。

三、核心特性与优势

  1. 共阳极数码管完美适配
    芯片输出为低电平有效,直接匹配共阳极数码管的阴极驱动逻辑,无需额外添加反相器或电平转换电路,简化电路设计;

  2. 宽电压/宽温设计
    2V6V工作电压覆盖了从电池供电(如3V纽扣电池)到工业5V系统的全场景;-40℃+125℃宽温范围,可稳定工作于低温环境(如北方户外)和高温环境(如车载仪表舱);

  3. 低功耗LS系列优势
    采用LS(低功耗肖特基)逻辑工艺,相比普通TTL芯片功耗降低约50%,适合电池供电的便携式设备(如电子钟、计算器);

  4. 内置消隐功能
    支持灭零输入(RBI) 和灭灯输出(RBO) :当RBI接地时,可实现“0”数字的消隐(如多位显示时的前零消隐);RBO可级联至下一级的RBI,实现多位数码管的联动消隐,提升显示整洁度;

  5. BCD码直接输入
    接收4位BCD码(00001001),对应09数字输出,无需复杂的数字编码转换,降低系统开发难度;

  6. DIP封装易调试
    DIP-16直插封装便于手工焊接、原型验证,同时兼容标准面包板和PCB插件工艺,适合从实验室原型到量产的全流程开发。

四、典型应用场景

SN74LS47N(LX)凭借稳定可靠的性能,广泛应用于以下场景:

  1. 消费电子显示:电子钟、计算器、电子秤、万用表等小型数字显示设备;
  2. 工业控制仪表:温度控制器、压力传感器、计数器、PLC扩展显示模块等工业级仪表;
  3. 车载电子:车载时钟、油耗显示、里程表、胎压监测显示等车载单元;
  4. 教育与原型开发:单片机学习板、创客项目、简易计数器等低成本数字显示方案;
  5. 家用电器:微波炉、洗衣机、空调、热水器等家电的数字状态显示。

五、应用注意事项

  1. 数码管接线逻辑:共阳极数码管的阳极需接系统电源正极(如5V),芯片输出端(ag段)需串联**限流电阻(100200Ω)** 后接数码管阴极,防止电流过大烧毁数码管;
  2. 消隐功能使用:多位数码管显示时,首位的RBI接地实现前零消隐,末位的RBO悬空,中间位的RBO接下一位的RBI,实现联动消隐;
  3. 输入电平匹配:若系统输入为3.3V,需确认芯片输入高电平阈值(LS系列VIH≥2V),3.3V可直接驱动,无需电平转换;
  4. 电源稳定性:避免电源电压波动超过工作范围(2V~6V),建议添加0.1μF去耦电容在芯片电源引脚与地之间,提升抗干扰能力;
  5. 温度防护:在高温环境(如≥100℃)下使用时,需确保芯片散热良好,避免封装过热影响性能。

六、总结

SN74LS47N(LX)作为灵星芯微推出的经典LS系列数码管驱动芯片,以宽电压、宽温、低功耗、适配共阳极数码管 为核心优势,兼顾了可靠性与成本效益,是各类数字显示设备的首选驱动器件。无论是工业级应用的严苛环境,还是消费电子的低成本需求,该芯片都能提供稳定可靠的显示驱动方案。

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