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XBLW SN74LS161N
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- XBLW SN74LS161N(XBLW)
- Type
- XBLW
- Minimum package
- 25 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- XBLW
- Electronic Component
- SN74LS161N(XBLW)
- Electronic Component
- 1
- Package
- DIP-16
- Electronic Component
- Counter / Divider
- Electronic Component
- 1.653g
- Electronic Component
- 4
- Electronic Component
- Electronic Component
- Electronic Component
- 1
- Features
- positions;; Synchronous
- Electronic Component
- BM0265609064
- Reset
- Electronic Component
- Operating Temperature
- 20℃~+85℃
- Operating Voltage
- 2V~6V
- Electronic Component
- 44MHz
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SN74LS161N(XBLW) 4位同步二进制计数器产品概述
一、核心功能与逻辑特性
SN74LS161N(XBLW)是芯伯乐（XBLW）推出的4位同步二进制计数器，兼容TTL逻辑电平，核心功能围绕同步计数、异步复位、同步预置展开：
- 计数方向为向上计数，最大计数范围0~15（4位二进制）；
- 时钟触发沿为上升沿，所有输出位同步更新，避免异步计数器的“纹波延迟”，提升计数准确性；
- 异步低电平复位（MR引脚）可快速清零所有输出，同步预置（LOAD引脚）支持直接写入初始计数值，逻辑控制灵活。
二、电气与性能参数
该器件参数覆盖宽范围，适配多场景需求：
- 工作电压：2V~6V，兼容常规5V TTL电源及3.3V低电压系统，无需额外电源转换；
- 计数性能：最高计数速率44MHz，传播延迟（tpd）仅19ns，满足中等频率下的计数、分频需求；
- 位宽与元件：内置4个1位计数单元，总位宽4位，支持完整4位二进制运算；
- 控制特性：异步复位（低电平有效）响应快，同步预置确保计数值写入与时钟同步。
三、封装与引脚配置
采用DIP-16双列直插封装，引脚布局符合标准LS161规范，核心引脚功能如下：
- 电源：VCC（16脚，正电源）、GND（8脚，接地）；
- 控制：MR（1脚，异步复位）、LOAD（9脚，同步预置）；
- 时钟/输入：CP（2脚，上升沿时钟）、D0-D3（3~6脚，4位预置输入）；
- 输出：Q0-Q3（11~14脚，4位计数输出）。
DIP-16封装便于手工焊接与原型开发，适配面包板、通孔焊接工艺，适合快速验证与小批量生产。
四、典型应用场景
凭借宽电压、高速同步特性，该器件适用于多种数字逻辑场景：
- 频率分频：实现2~16分频（4位最大分频比16），用于数字时钟的秒/分/时分频、信号降频；
- 脉冲计数：工业自动化中流量传感器、编码器的脉冲累加，测试设备的事件计数；
- 定时控制：配合门电路实现LED闪烁、延时触发等固定时间间隔控制；
- 逻辑扩展：与译码器、锁存器配合构成BCD码转换、地址生成等复杂功能，作为数字系统计数核心。
五、环境适应性
工作温度范围为**-20℃~+85℃**，属于工业级常规温区，可稳定工作于室内设备、小型工业控制器等场景，无需额外温度补偿；同时继承LS系列抗干扰能力，适合对逻辑稳定性有要求的应用，是传统LS161的高性价比替代方案。
该器件平衡了性能与成本，适合从原型开发到小批量量产的多种需求，是数字逻辑设计中常用的计数核心器件。
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