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HGSEMI LM555CN
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI LM555CN
- Type
- HGSEMI
- Minimum package
- 1000 盒
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HGSEMI
- Electronic Component
- LM555CN
- Electronic Component
- 1
- Package
- DIP-8
- Electronic Component
- 555 Timer
- Electronic Component
- 0.805g
- Electronic Component
- 1
- Features
- positions
- Electronic Component
- BM0227365014
- Electronic Component
- 1
- Operating Temperature
- 0℃~+70℃
- Operating Voltage
- 4.5V~15V
- Operating Current
- 1.5mA
- Output Current
- 200mA
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM555CN 产品概述
一、产品简介
LM555CN（品牌：HGSEMI / 华冠）是一款单通道精密定时/振荡集成电路，采用常见的DIP-8封装，适用于低功耗、可靠性要求高的定时和脉冲产生场合。器件结构成熟，外围元件少，易于在单片机以外的场合实现独立定时与占空比控制。
二、主要参数
- 定时器数：1（单通道）
- 工作电压：4.5V ～ 15V
- 最大输出电流：200mA（峰值能力，适合驱动小负载或作为缓冲）
- 工作电流：典型值1.5mA（静态待机电流低）
- 工作温度范围：0℃ ～ +70℃
- 封装形式：DIP-8
三、功能特性
- 占空比可调振荡：可在非稳态（astable）模式下通过外接电阻、电容调整频率与占空比；也可通过控制端（Control）实现电压控制占空比或频率调制。
- 复位功能：具有复位引脚，可实现外部强制复位或脉冲清零，适用于需外部同步或应急停振的系统。
- 多模式工作：支持单稳态（monostable）、非稳态和双稳态工作方式，应用灵活。
- 稳定可靠：内部比较器、触发器及放电管路组成，抗干扰能力较好，适合一般工业与消费类电子。
四、典型应用
- 脉冲发生（PWM 信号发生器）
- 延时电路（定时提示、延迟复位）
- 方波振荡器、闪烁灯、蜂鸣器驱动（配合缓冲）
- 信号调制、占空比可调的驱动场合
五、使用建议与注意事项
- 去耦与稳定：建议在VCC与GND之间并联0.1μF陶瓷电容；控制端（Pin5）并联0.01μF以抑制噪声。
- 输出驱动：尽管输出峰值可达200mA，连续大电流输出会引起发热，应避免长时间高电流驱动或加外部缓冲晶体管。
- 占空比调节：常用公式（非稳态）f ≈ 1.44/((RA + 2·RB)·C) 可用于初步选型，必要时通过调试优化RA、RB与C值。
- 环境与散热：工作温度为0~+70℃，在高温或需更大可靠性场合考虑降额或改用高温级别器件。
LM555CN以其设计简洁、外围元件少与丰富的工作模式，仍然是实现低成本定时与振荡功能的首选器件。
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