WMSIC Electronic Components

HGSEMI MAX3232AEIM/TR MAX3232AEIM

ModelMAX3232AEIM/TR
PackageSOP-16
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI MAX3232AEIM / TR
Type
HGSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
MAX3232AEIM/TR
Electronic Component
1
Package
SOP-16
Type
Transceiver
Electronic Component
RS232IC
Electronic Component
0.331g
Electronic Component
1
Electronic Component
BM0264801317
Operating Temperature
40℃~+85℃
Operating Voltage
3V~5.5V
Receiver
2
Data
250Kbps
Static Current
1mA
Electronic Component
±15kV

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

MAX3232AEIM/TR 多通道RS-232收发器产品概述

一、核心身份与应用定位

HGSEMI(华冠)推出的MAX3232AEIM/TR是一款2通道RS-232收发器,专为解决数字电路(如MCU、单片机)与RS-232标准串口的电平兼容问题设计。作为工业级接口器件,它集成电荷泵电路,无需外部正负电源即可实现TTL/CMOS电平与RS-232±12V电平的双向转换,广泛适配嵌入式系统、工业控制等场景的串口通信需求。

二、关键性能参数解析

该器件的核心参数覆盖了接口通信的关键需求,具体如下:

  1. 通道配置:2个RS-232驱动器+2个接收器,支持双串口设备同时通信,满足多设备数据交互需求;
  2. 数据速率:最高250Kbps,兼容工业串口常用的9600bps、115200bps等速率,适配大多数通信场景;
  3. 电源范围:3V~5.5V宽电压输入,兼容3.3V(如STM32)、5V(如51单片机)主流数字系统电源,无需额外电压转换;
  4. 静电防护:引脚端提供±15kV人体模式(HBM)静电保护,有效抵御工业现场的静电干扰,降低器件损坏风险;
  5. 集成电荷泵:内置升压/降压电路,仅需单电源即可生成RS-232所需的±12V电平,无需外部正负电源模块;
  6. 低功耗:静态电流仅1mA,动态功耗可控,适合电池供电或低功耗要求的设备;
  7. 温度范围:-40℃~+85℃工业级温度,适应低温(如户外冬季)、高温(如车间)等恶劣环境。

三、核心功能特性说明

3.1 电平转换核心功能

作为RS-232收发器的核心,该器件实现双向电平转换:

  • 发送端:将MCU输出的TTL/CMOS逻辑电平(高=VCC,低=0V)转换为RS-232标准的±12V电平(逻辑1=-12V,逻辑0=+12V);
  • 接收端:将RS-232串口输入的±12V电平转换为数字逻辑电平,供MCU读取,确保双向通信的电平兼容。

3.2 集成电荷泵简化设计

内置电荷泵电路是该器件的关键优势:

  • 无需外部±12V电源,仅需单电源(3V~5.5V)即可工作,减少外部元件数量;
  • 仅需外接4个100nF陶瓷电容(电荷泵储能),电路设计简单,降低PCB空间占用和BOM成本。

3.3 静电与可靠性保障

  • 引脚端(驱动器输出、接收器输入)的±15kV HBM静电防护,可抵御常见的静电放电(如人体接触、设备插拔);
  • 工业级温度范围确保在极端环境下稳定工作,提升设备长期可靠性。

四、封装与引脚适配

4.1 封装形式

采用SOP-16(16引脚小外形封装),体积小巧(引脚间距1.27mm),适合PCB布局紧凑的产品(如小型工业控制器、嵌入式模块)。

4.2 引脚兼容性

引脚定义符合RS-232收发器通用标准,与MAX3232等同类器件引脚完全兼容,可直接替换(需确认参数匹配),方便产品升级或维修。

五、典型应用场景

该器件凭借宽电压、低功耗、工业级特性,广泛应用于以下场景:

  1. 工业控制:PLC、远程IO模块、传感器节点的串口通信接口;
  2. 嵌入式系统:STM32、ARM、51单片机的RS-232扩展接口;
  3. 通信设备:调制解调器、路由器的串口配置/数据端口;
  4. 测试仪器:示波器、信号发生器的串口控制/数据输出;
  5. 手持设备:便携式数据采集器、POS终端的串口通信模块;
  6. 车载电子:部分车载诊断系统(OBD)的串口接口(适配-40~85℃环境)。

六、使用注意事项

为确保器件稳定工作,需注意以下几点:

  1. 电荷泵电容:必须外接4个100nF陶瓷电容(ESR≤5Ω),电容值偏差不超过±10%,否则可能影响电平转换效果;
  2. 电源滤波:在VCC引脚靠近器件处并联100nF陶瓷电容,过滤电源噪声;
  3. 串口防护:工业现场建议在串口连接器处额外并联TVS管(如SMBJ12CA),进一步提升静电防护等级;
  4. 速率匹配:通信双方需设置相同波特率(如115200bps),避免数据丢包;
  5. 温度适配:确认应用场景温度在-40℃~+85℃范围内,超出需选择宽温器件。

总结

MAX3232AEIM/TR作为HGSEMI的工业级2通道RS-232收发器,以集成电荷泵、宽电压兼容、低功耗、静电防护为核心优势,有效简化串口通信电路设计,适配多领域应用需求。其工业级温度范围和引脚兼容性,使其成为嵌入式系统、工业控制等场景的高性价比接口解决方案。

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