WMSIC Electronic Components

GR NE555

ModelNE555
PackageSOP-8
BrandGR
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
GR NE555
Type
GR
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
GR
Electronic Component
NE555
Electronic Component
1
Package
SOP-8
Electronic Component
555 Timer
Electronic Component
0.11g
Electronic Component
1
Features
positions
Electronic Component
BM0264390956
Electronic Component
1
Operating Temperature
20℃~+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.

GR(国睿)NE555定时器芯片产品概述

GR(国睿)推出的NE555定时器芯片是一款经典通用型时序控制元件,凭借稳定的性能、灵活的应用场景及兼容标准NE555的电气特性,广泛适用于消费电子、工业控制、小型家电等领域的定时、脉冲生成及时序逻辑需求。

一、产品核心定位与应用场景

NE555作为全球应用最广泛的定时器芯片之一,GR国睿的这款产品延续了低成本、易调试、多场景兼容的核心优势,主要定位为:

  • 基础时序控制元件,替代复杂逻辑电路实现定时、脉冲功能;
  • 低功耗场景的信号生成单元,适合电池供电设备;
  • 简单电子系统的“信号中枢”,配合外围RC网络即可实现多样化功能。

典型应用场景包括:LED闪烁指示灯、小家电定时开关、简易报警器(配合红外/震动传感器)、脉冲发生器(用于传感器触发)、电机延时启动控制等。

二、关键电气参数详解

GR国睿NE555的核心电气参数完全兼容标准NE555,同时优化了部分性能,关键参数如下:

1. 供电特性

  • 供电电压范围:4.5V~15V,支持单电源供电,无需双电源即可稳定工作;兼容常见系统电压(如5V单片机、12V直流电源),降低系统设计成本。
  • 静态供电电流:仅1.5mA(典型值),远低于同类产品平均水平,适合对功耗敏感的便携式设备(如小型手持报警器)。

2. 时序性能

  • 最高工作频率:500kHz,可满足中低速时序需求(如10kHz以下的脉冲生成、1秒级定时);若配合RC网络调整,可实现从毫秒级到数小时的宽范围定时。

3. 环境适应性

  • 工作温度范围:-20℃~+70℃,覆盖工业级基本温区,可用于室内(如智能家居设备)、户外非极端环境(如小型安防设备),避免因温度变化导致性能漂移。

三、封装与物理特性

GR国睿NE555采用SOP-8表面贴装封装,具有以下优势:

  • 小尺寸:封装尺寸约3.9mm×4.9mm(标准SOP-8),适合PCB布局紧凑的产品(如智能手表、小型控制器);
  • 引脚定义:兼容标准NE555引脚(1脚:地GND;2脚:触发TRIG;3脚:输出OUT;4脚:复位RESET;5脚:控制CONT;6脚:阈值THRESH;7脚:放电DISCH;8脚:电源VCC),无需重新设计PCB即可替换同类产品;
  • 焊接兼容性:支持回流焊、波峰焊等常规SMT工艺,生产效率高。

四、典型应用案例

以LED闪烁电路为例,仅需3个元件即可实现:

  1. 外围电路:1个1kΩ电阻、1个10μF电容(RC网络)、1个LED及限流电阻;
  2. 工作原理:NE555工作在多谐振荡模式,通过RC充放电时间常数决定闪烁频率(公式:T=0.693×(R1+2R2)×C);
  3. 适配场景:玩具车尾灯、小型报警器指示灯、智能家居状态灯。

此外,配合继电器可实现延时开关:当触发信号输入后,NE555延迟固定时间(如5秒)后输出高电平驱动继电器,适用于加湿器、台灯等定时关闭功能。

五、使用注意事项

为保证芯片稳定工作,需注意以下几点:

  1. 电源滤波:在VCC(8脚)与GND(1脚)之间并联0.1μF陶瓷电容,滤除高频噪声,避免输出不稳定;
  2. 复位引脚:4脚(RESET)需接高电平(如VCC),若需外部复位,可通过开关/三极管接低电平(低于0.8V);
  3. 控制引脚:5脚(CONT)若无需调节阈值,需接0.01μF电容到地,稳定内部1.2V参考电压;
  4. 温度限制:避免长期在超过70℃或低于-20℃环境下工作,否则可能导致定时精度下降;
  5. 焊接防护:SOP-8封装焊接温度不宜超过260℃(回流焊),避免热损伤芯片内部电路。

GR国睿NE555以其稳定的性能、灵活的应用及亲民的成本,成为电子设计中“刚需级”的时序控制元件,适合从入门级DIY到工业级小批量生产的各类需求。

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