WMSIC Electronic Components

XBLW SN74HC161N

ModelSN74HC161N(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 SN74HC161N(XBLW)
Type
XBLW
Minimum package
25 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XBLW
Electronic Component
SN74HC161N(XBLW)
Electronic Component
1
Package
DIP-16
Electronic Component
Counter / Divider
Electronic Component
1.66g
Electronic Component
Electronic Component
Electronic Component
1
Features
positions;; Synchronous
Electronic Component
BM0265621943
Reset
Electronic Component
Operating Temperature
40℃~+105℃
Operating Voltage
2V~6V
Electronic Component
48MHz
Electronic Component
Synchronous

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

SN74HC161N(XBLW芯伯乐)4位同步二进制计数器产品概述

一、产品核心定位与功能简述

SN74HC161N是XBLW(芯伯乐)推出的4位同步二进制计数器,基于高速CMOS工艺设计,兼容标准74HC系列逻辑特性,具备异步复位、同步预置功能,适用于数字系统中的计数、分频、时序控制等场景。该器件以高计数速率、宽电压范围、工业级宽温适应性为核心优势,DIP-16封装便于原型开发与工业应用部署,是低功耗高速计数场景的理想选择。

二、关键电气与性能参数详解

该器件的核心参数覆盖逻辑功能、电气特性与可靠性,具体如下:

1. 逻辑与计数特性

  • 位数:4位二进制计数(循环范围0000~1111);
  • 触发方式:时钟上升沿触发(CP引脚为时钟输入,仅上升沿更新计数);
  • 复位方式:异步低电平复位(MR引脚,无需时钟同步即可将所有输出清零);
  • 预置方式:同步低电平预置(PE引脚,时钟上升沿时将P0-P3预置值加载到输出Q0-Q3);
  • 进位输出:TC引脚(计数至1111时置高,可级联扩展为8位/16位计数)。

2. 电气性能

  • 工作电压:2V~6V(覆盖3.3V低功耗系统与5V常规系统,兼容性强);
  • 计数速率:48MHz(典型值,支持高速脉冲计数,适配高频时钟场景);
  • 传播延迟(tpd):18ns(典型值,时钟到输出的延迟,保证高速响应);
  • 驱动能力:TTL兼容输入/输出,可驱动10个TTL负载,输出带载能力稳定。

3. 环境与可靠性

  • 工作温度:-40℃~+105℃(工业级宽温,适应极端环境温度波动);
  • 存储温度:-65℃~+150℃(常规存储条件,长期存放性能稳定)。

三、DIP-16封装与引脚功能说明

SN74HC161N采用DIP-16双列直插封装,引脚布局与标准SN74HC161一致,关键引脚功能如下:

引脚号 符号 功能说明 1 CP 时钟输入(上升沿触发计数) 2 MR 异步复位(低电平有效,清零所有输出) 3 P0 预置输入0(最低位) 4 P1 预置输入1 5 P2 预置输入2 6 P3 预置输入3(最高位) 7 GND 电源地 9 PE 同步预置(低电平有效,时钟上升沿加载预置值) 10 Q0 输出0(最低位) 11 Q1 输出1 12 Q2 输出2 13 Q3 输出3(最高位) 14 TC 进位输出(高电平有效,计数至1111时置高) 15 VCC 电源正(2V~6V) 8/16 NC 空引脚(无需接线)

四、典型应用场景

SN74HC161N的灵活性使其适用于多种数字系统场景:

1. 高速分频器

  • 示例:输入48MHz时钟,通过4位二进制计数实现16分频,输出3MHz时钟,可用于低速MCU、传感器的时钟同步;
  • 优势:同步计数无毛刺,分频输出稳定,避免异步分频的信号干扰。

2. 脉冲计数监测

  • 应用:工业编码器、流量传感器的脉冲计数,实时监测脉冲数量(如电机转速监测、液体流量计数);
  • 优势:异步复位可快速清零,适合批量脉冲的批量计数场景。

3. 原型开发与实验

  • 优势:DIP-16封装便于面包板接线,适合学生实验、创客项目的时序逻辑验证;
  • 示例:数字时钟的秒/分计数模块、逻辑门实验的辅助计数验证。

4. 工业控制时序

  • 应用:PLC扩展模块的状态计数、生产线的节拍计数;
  • 优势:-40℃~+105℃宽温,适应工业现场的温度波动(如车间、户外设备)。

五、性能优势与兼容性

  1. 高速低功耗平衡:CMOS工艺实现48MHz计数速率,同时静态功耗仅为μA级,适合电池供电与高速系统;
  2. 无毛刺输出:同步计数避免异步计数器的“毛刺”问题,提升系统稳定性(如数字时钟的精度);
  3. TTL兼容:输入电平兼容TTL(VIH=2.0V,VIL=0.8V),输出可驱动TTL负载,便于与传统逻辑器件级联;
  4. 灵活控制:异步复位+同步预置双功能,可快速调整计数初始值(如预置特定计数起点),适配不同应用需求。

六、使用注意事项

  1. 电源电压:避免超过6V,防止器件过压损坏;
  2. 复位/预置:MR(复位)与PE(预置)为低电平有效,使用时需注意电平极性(勿接反);
  3. 级联扩展:如需8位计数,可将前级TC引脚接后级CP引脚,实现级联(需注意进位延迟);
  4. 散热:工作在48MHz高速下,需保证良好散热(DIP封装散热能力有限,避免长时间满负载运行)。

该器件凭借稳定的性能与灵活的功能,广泛适用于教育实验、工业控制、消费电子等领域,是74HC系列计数器的高性价比替代方案。

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