WMSIC Electronic Components

HGSEMI LM393AM/TR LM393AM

ModelLM393AM/TR
PackageSOP-8
BrandHGSEMI
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
HGSEMI LM393AM / TR
Type
HGSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
LM393AM/TR
Electronic Component
1
Package
SOP-8
Electronic Component
Comparator
Electronic Component
0.315g
Power Supply
5V~30V
Electronic Component
1
Electronic Component
BM0264548644
Operating Temperature
40℃~+125℃
Comparator
Electronic Component
Output
MOS;TTL;CMOS
Output Type
Electronic Component
(tr)
0.3us
Static Current(Iq)
2.5mA

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

LM393AM/TR 产品概述

一、产品简介

LM393AM/TR 是 HGSEMI(华冠)推出的双路电压比较器,封装为 SOP-8。每片包含两个独立的比较器,专为在宽电压范围内使用单电源供电而设计,同时也支持双电源供电。器件具有低静态电流、开集电极输出结构,便于与多种逻辑电平接口(MOS、TTL、CMOS)配合使用,适合工业级温度范围的各类检测与比较应用。

二、主要特性

  • 双路比较器设计,节省系统空间与成本。
  • 输入失调电压典型值:2 mV,利于高精度阈值检测。
  • 输入偏置电流:25 nA,输入泄漏小,适合高阻抗传感器接口。
  • 输入失调电流:5 nA,保证输入电流匹配性。
  • 静态电流(Iq):典型 2.5 mA(每对),低功耗特性明显。
  • 传播延迟(tpd):约 1.3 µs,响应速度适中。
  • 上升时间(tr):0.3 µs,输出边沿整形良好。
  • 输出类型:开集电极(Open-collector),需要外部上拉电阻;兼容 MOS/TTL/CMOS 电平。
  • 电源范围:单电源工作 5 V ~ 30 V,总电源差 VDD−VSS 可达最大 30 V。
  • 工作温度:-40 ℃ 到 +125 ℃,满足严苛工业环境需求。
  • 封装:SOP-8,适合表面贴装工艺。
  • 包装形式:/TR 表示卷带卷装(Tape & Reel),便于自动贴片生产线使用。

三、电气与时序要点

  • 输入失调电压(Vos)低至 2 mV,有利于提高比较器的精度,但在极低差分信号下仍建议采用滞后(正反馈)或外部偏置来抑制噪声触发。
  • 传播延迟约 1.3 µs,结合 0.3 µs 的上升时间,适用于中速信号监测、ADC 比较、过压/欠压检测等场景;对要求亚微秒级响应的高速应用需评估是否满足系统时序。
  • 开集电极输出允许用户选择上拉电阻与上拉电压,从而灵活匹配后端逻辑电平或驱动更高电压的负载,但须注意上拉电流与功率限制。

四、典型应用场景

  • 模拟信号阈值检测与过/欠压保护。
  • 电池管理系统(BMS)中的电压比较与故障检测。
  • 电平转换与门限触发电路,配合 MCU 或 CPLD/FPGA 作为前端比较单元。
  • 传感器信号放大后与阈值比较(例如光电、温度、压力传感器)。
  • 工业控制、报警与监测系统,尤其在宽电源电压和宽温度范围下应用可靠。

五、设计注意事项

  • 由于为开集电极输出,系统设计时必须配置合适的上拉电阻与电压,上拉阻值与被驱动电路的输入容性、所需上升时间和功耗有关,应在可靠性与速度之间权衡。
  • 虽然器件支持单电源 5–30 V,但应避免输入端电压超出电源轨(除非通过限流或保护元件),以防损坏输入结。
  • 在高精度比较场合建议加热漂移补偿或使用滞后设计以抑制噪声引起的抖动。
  • 布局时将电源旁路电容靠近封装电源引脚放置,减少电源杂散与地环路,改善比较器稳定性与抗干扰能力。

六、封装与采购信息

  • 封装类型:SOP-8,适配常见 SMT 生产工艺。
  • 品牌:HGSEMI(华冠)。型号后缀 /TR 表示卷带包装,适合自动化贴片生产。
  • 在选型与采购时,请确认所需的温度等级与包装方式(散装/卷带),并参考最新数据手册以获取完整引脚定义、电气特性曲线与封装外形尺寸。

结语:LM393AM/TR 提供了低功耗、宽电源范围和工业级温度能力的双通道比较器解决方案,适合多类通用阈值检测与接口转换应用。选择时请依据系统对速度、精度和接口电平的具体需求进行参数匹配与版图优化。

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