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XINLUDA XD74LS161
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- XINLUDA XD74LS161
- Type
- XINLUDA
- Minimum package
- 1000 管装
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- XINLUDA
- Electronic Component
- XD74LS161
- Electronic Component
- 1
- Package
- DIP-16
- Electronic Component
- Counter / Divider
- Electronic Component
- 1.723g
- Electronic Component
- Electronic Component
- Electronic Component
- 1
- Features
- Programmable Division; positions;; Synchronous
- Electronic Component
- BM0228586569
- Reset
- Electronic Component
- Operating Temperature
- 0℃~+70℃
- Operating Voltage
- 4.75V~5.25V
- Electronic Component
- 32MHz
- Electronic Component
- Synchronous
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
XD74LS161 产品概述
XD74LS161（信路达）是一款工作于TTL兼容电平、封装为DIP‑16的同步计数器器件。器件在5V电源（4.75V～5.25V）下稳定工作，具有上升沿触发、异步复位与同步计时的设计，可用于定时、分频、计数和序列控制等多种数字电路场合。
一、主要特性
- 逻辑类型：十进制计数器（可配置实现0–9计数环节或作为通用同步计数器使用）
- 工作电压：4.75V ～ 5.25V（典型5V TTL 系统兼容）
- 触发沿：上升沿触发，计数沿对输入时钟的上升沿响应
- 复位方式：异步复位（随复位信号立即清零）
- 计时方式：同步并行加载/计时，易于级联和并联控制
- 最大计数速率：32MHz（推荐按器件规格和系统条件考虑安全裕量）
- 工作温度：0℃ ～ +70℃（商用级）
- 传播延迟（tpd）：24ns（输入到输出的典型延迟）
- 封装：DIP‑16，便于面包板调试和插座安装
- 品牌：XINLUDA（信路达）
二、功能概述与工作原理
XD74LS161为同步结构：所有内部触发器在同一时钟沿同时采样，保证并行数据一致性。器件提供并行并装入功能，可在外部并行数据有效时通过加载端口设定初始计数值。异步复位端口用于在任何时刻立即清零，便于快速初始化。通过与端进/端出（如ENP/ENT/RCO）配合，可将多片器件级联形成更宽位数的计数器或实现十进制回绕。
三、典型应用场景
- 频率分频与脉冲计数
- 数字时序与事件计数器
- 流水灯、计步控制、位置编码（作为计数子模块）
- 多位计数器的级联组合，用于计数范围扩展或产生特定模数的计数器（如十进制计数环）
四、设计与使用建议
- 时钟信号：使用干净的上升沿边沿，避免毛刺引起误触发；必要时在时钟输入端使用缓冲/整形电路。
- 复位/并行加载：异步复位优先，加载操作建议在时钟稳定且复位释放后进行。并行数据应在时钟有效沿前稳定。
- 级联设计：利用端出进位信号（RCO）与下一级的使能端配合实现无毛刺的进位级联。
- PCB 布线：VCC/GND 采用星形或近邻铺铜，去耦电容（0.1µF）靠近器件电源引脚以抑制瞬态噪声。
- 温度与功耗：工作在0～70℃范围内，若用于高频（接近32MHz）时注意器件发热与系统干扰，必要时增加通风或散热措施。
五、封装与存储
器件为DIP‑16 直插封装，适合面包板与插座式安装。长期存储建议干燥、无腐蚀气体环境，避免潮湿与静电，典型存储温度范围请参照厂家包装说明。
总结：XD74LS161（信路达）是一款性能稳定、易于级联与调试的同步计数器，适用于需要可靠计数与分频的商用数字系统。在实际设计中，应根据系统时序与噪声特性留有裕度，以保证在高频工作条件下的稳定性与长期可靠性。
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