WMSIC Electronic Components

XBLW SN74HC47N

ModelSN74HC47N(XBLW)
PackageDIP-16
BrandXBLW
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

19 specifications

Core information

Product name
XBLW SN74HC47N(XBLW)
Type
XBLW
Minimum package
25 管

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XBLW
Electronic Component
SN74HC47N(XBLW)
Electronic Component
1
Package
DIP-16
Electronic Component
LEDDriver
Electronic Component
1.745g
Electronic Component
1
Channel Count
7
Electronic Component
BM0265609053
Operating Temperature
40℃~+125℃
Output Voltage
0V~6V
Output Current
25mA
Operating Voltage(DC)
2V~6V
Electronic Component
Electronic Component
Electronic Component
25

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

SN74HC47N(XBLW芯伯乐)7段显示译码器/驱动器产品概述

SN74HC47N是芯伯乐(XBLW)推出的一款BCD码转7段显示的译码/驱动器件,采用高速CMOS工艺制造,兼容TTL逻辑电平,兼具宽电压范围、工业级温度适应性与实用控制功能,广泛适用于各类数字显示场景。

一、产品核心定位与功能特性

作为经典的7段显示配套器件,SN74HC47N的核心功能是将4位BCD码(二进制编码十进制,范围0000~1001)转换为7段显示器的段驱动信号,同时集成灯测试(LT)、灭零输入(RBI)、消隐输入(BI)、灭零输出(RBO) 等控制引脚,支持系统级显示功能扩展:

  • 灯测试(LT):低电平有效时,所有段点亮,用于上电自检或故障排查;
  • 灭零输入(RBI):低电平有效时,若输入BCD码为0000,则所有段熄灭(消除前导零);
  • 消隐输入(BI):低电平有效时,强制所有段熄灭,可用于故障报警或待机消隐;
  • 灭零输出(RBO):级联多位显示时,传递灭零状态,实现多位前导零/后尾零的统一消除。

二、关键技术参数解析

XBLW版本的SN74HC47N针对工业应用优化,核心参数如下:

参数类别 具体规格 备注说明 工作电压(DC) 2V~6V 兼容3.3V/5V系统,无需电平转换 通道数 7通道(段a~g) 覆盖7段显示器全部显示段 输出电压 0V~6V 与工作电压匹配 输出电流 最大25mA 可直接驱动共阳极7段显示器 工作温度范围 -40℃~+125℃ 工业级宽温,适应恶劣环境 封装类型 DIP-16(双列直插) 手工焊接/原型开发友好

补充:输入逻辑电平符合HC系列标准(Vih≥0.7Vcc,Vil≤0.3Vcc),可直接对接单片机、FPGA等数字电路输出。

三、引脚配置与封装说明

SN74HC47N采用DIP-16标准双列直插封装,引脚定义清晰,便于电路设计与焊接:

  1. 引脚1:LT(灯测试输入,低电平有效);
  2. 引脚2:RBI(灭零输入,低电平有效);
  3. 引脚3:D(BCD输入第4位,最高位);
  4. 引脚4:C(BCD输入第3位);
  5. 引脚5:B(BCD输入第2位);
  6. 引脚6:A(BCD输入第1位,最低位);
  7. 引脚7:GND(电源地);
  8. 引脚8:BI(消隐输入,低电平有效);
  9. 引脚9:RBO(灭零输出,低电平有效);
  10. 引脚10:a(段a输出);
  11. 引脚11:b(段b输出);
  12. 引脚12:c(段c输出);
  13. 引脚13:d(段d输出);
  14. 引脚14:e(段e输出);
  15. 引脚15:f(段f输出);
  16. 引脚16:VCC(电源正)。

DIP-16封装的引脚间距为2.54mm,适配通用面包板与PCB板,降低了原型开发与批量生产的难度。

四、典型应用场景与优势

SN74HC47N(XBLW)凭借宽温、宽压与实用功能,适用于以下场景:

1. 工业控制显示

如PLC模块的数字状态显示、温度/压力传感器的数值显示,-40℃~+125℃的宽温范围可适应车间、户外等恶劣环境;

2. 仪器仪表显示

万用表、示波器、信号发生器等设备的数字读数显示,通过RBI功能消除前导零,提升读数清晰度;

3. 消费电子与家电

洗衣机、空调的控制面板数字显示,25mA输出电流可直接驱动小型共阳极7段显示器,简化电路设计;

4. 汽车电子辅助显示

车载胎压监测、油耗显示等辅助功能,宽电压范围兼容汽车12V系统(需分压),宽温适应车载环境。

核心优势总结:

  • 兼容性强:2~6V宽电压兼容3.3V/5V系统,无需电平转换;
  • 驱动能力足:25mA输出电流直接驱动共阳极7段显示器,无需额外放大;
  • 功能实用:集成LT/RBI/BI等控制功能,减少外部电路;
  • 可靠性高:工业级宽温与CMOS工艺,抗干扰能力强,寿命长。

五、使用注意事项

  1. 输出结构:SN74HC47N输出为开漏模式,需外接上拉电阻(建议1kΩ~10kΩ)到VCC,上拉电阻大小影响驱动速度(电阻越小速度越快,但功耗增加);
  2. 电源防护:避免电源极性接反,建议在VCC引脚串联100Ω限流电阻,防止误操作损坏;
  3. 输入电平:输入BCD码需符合HC逻辑电平,若对接TTL电路(5V),无需电平转换;对接3.3V电路时,确保输入电平≥0.7*3.3V≈2.3V(Vih);
  4. 级联应用:多位显示时,通过RBO引脚级联,前级RBO接后级RBI,实现多位灭零功能;
  5. 静电防护:CMOS器件易受静电损坏,焊接时需接地,存放时使用防静电包装。

综上,SN74HC47N(XBLW)是一款高性价比的7段显示译码/驱动器件,兼具工业级可靠性与实用功能,可满足各类数字显示场景的需求。

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