WMSIC Electronic Components

XBLW LM393N

ModelLM393N(XBLW)
PackageDIP-8
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 LM393N(XBLW)
Type
XBLW
Minimum package
50 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XBLW
Electronic Component
LM393N(XBLW)
Electronic Component
1
Package
DIP-8
Electronic Component
Comparator
Electronic Component
0.719g
Power Supply
2V~36V
Electronic Component
1
Electronic Component
BM0265583727
Operating Temperature
0℃~+70℃
Comparator
Electronic Component
Output
TTL
(tr)
1.3us
Static Current(Iq)
400uA
(tpd)
1.3us

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

LM393N(XBLW)双路电压比较器产品概述

LM393N是芯伯乐电子(XBLW)推出的双路通用电压比较器,采用DIP-8双列直插封装,兼具低失调精度、高速响应、宽电源适应性及TTL兼容输出等核心优势,广泛适用于工业控制、消费电子、电源监测等场景的模拟信号比较与电平检测。

一、产品基本信息

项目 详情 品牌 芯伯乐电子(XBLW) 型号 LM393N 封装形式 DIP-8(双列直插式) 核心类型 双路电压比较器 定位 通用型低功耗比较器件

二、核心性能参数详解

1. 输入特性(精准度核心)

  • 输入失调电压(Vₒₛ):典型值1mV,远低于同类普通比较器(通常5mV以上),可显著降低信号比较误差,适配弱信号检测场景;
  • 输入偏置电流(Iᵦ):25nA(典型值),低偏置设计减少对高阻抗输入电路的负载效应,适合直接对接传感器等弱信号源;
  • 输入失调电流(Iₒₛ):5nA(典型值),进一步优化输入级平衡,提升零点稳定性。

2. 速度与响应特性

  • 传播延迟(tₚₙ):1.3ns(典型值),高速响应可满足高频信号(如PWM、脉冲)的实时比较需求;
  • 上升时间(tᵣ):1.3μs(典型值),输出电平切换速度快,无需额外电平转换即可兼容TTL逻辑电路。

3. 电源与功耗特性

  • 电源范围:单电源2V36V,双电源±1V±18V(Vcc-Vee最大36V),适配不同系统电源设计;
  • 静态电流(Iq):400μA(典型值),低功耗适合电池供电或低功耗系统,减少电源负担。

4. 输出特性

  • 输出模式:集电极开路(需外接上拉电阻至TTL电平),兼容5V TTL逻辑,可直接对接单片机、FPGA等数字电路。

三、典型应用场景

1. 电平检测与阈值判断

例如电池电压监测:将电池电压分压后接至比较器输入端,当电压低于截止阈值时,输出低电平触发充电/报警;1mV失调电压可精准识别电压变化,25nA偏置电流不影响电池负载。

2. 窗口比较器设计

用两路比较器实现上下限检测:一路比较电源过压阈值,一路比较欠压阈值,当输入信号在窗口内时输出特定电平,用于电源状态监测、传感器信号范围判断。

3. 脉冲信号整形

对传感器输出的不规则微弱脉冲进行整形,输出标准TTL电平脉冲,便于后续数字电路处理;1.3ns传播延迟保证高频脉冲整形精度。

4. 过流过压保护

在电源电路中,将电流采样电压/电压分压信号接至比较器,超过保护阈值时输出低电平,触发MOS管关断或继电器动作,实现过流过压防护。

5. ADC辅助比较

作为逐次逼近型ADC的核心比较器,将模拟输入与DAC参考电压比较,输出数字逻辑电平,完成模数转换关键步骤。

四、DIP-8封装引脚功能

LM393N采用标准引脚排列,具体功能如下:

引脚号 功能描述 备注 1 输出端1(OUT1) 集电极开路,需外接上拉电阻 2 反相输入端1(IN1⁻) 输入电压≤Vcc、≥Vee 3 同相输入端1(IN1⁺) 输入电压≤Vcc、≥Vee 4 负电源端(VEE) 单电源时接地 5 同相输入端2(IN2⁺) 输入电压≤Vcc、≥Vee 6 反相输入端2(IN2⁻) 输入电压≤Vcc、≥Vee 7 输出端2(OUT2) 集电极开路,需外接上拉电阻 8 正电源端(VCC) 单电源2V36V,双电源+1V+18V

五、使用注意事项

  1. 电源连接规范:

    • 单电源:VEE(引脚4)接地,VCC接2V~36V;
    • 双电源:VCC接+1V+18V,VEE接-1V-18V(禁止极性反接);
    • 去耦:VCC与VEE间并联0.1μF陶瓷电容,减少电源噪声。
  2. 输入信号限制:
    输入电压需满足 VEE ≤ IN± ≤ VCC,超出范围可能导致输入饱和或器件损坏。

  3. 输出负载要求:
    集电极开路最大灌电流20mA(典型值),拉电流由上拉电阻决定(建议1kΩ~10kΩ,≤2mA),避免过重负载导致电平不稳定。

  4. 温度环境:
    工作温度0℃+70℃(商业级),存储温度-55℃+125℃,避免极限温度长时间工作。

总结

LM393N(XBLW)凭借低失调精度、高速响应、宽电源范围及TTL兼容输出等优势,成为工业控制、消费电子、原型开发等领域的常用比较器器件。DIP-8封装便于手工焊接,适合各类基础比较与电平检测应用,兼顾性能与成本效益。

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