WMSIC Electronic Components

ElecSuper MAX485ESA+T MAX485ESA

ModelMAX485ESA+T
PackageSOP-8
BrandElec Super
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
Elec Super MAX485ESA+T
Type
ELECSUPER
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ELECSUPER
Electronic Component
MAX485ESA+T
Electronic Component
1
Package
SOP-8
Type
Transceiver
Electronic Component
RS-485 / RS-422IC
Electronic Component
0.174g
Electronic Component
32
Electronic Component
1
Features
Tx / Rx;;;; Low Power
Electronic Component
BM0264576559
Operating Temperature
40℃~+85℃
Operating Voltage
5V
Receiver
1
Data
2.5Mbps

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

MAX485ESA+T 产品概述

一、产品简介

MAX485ESA+T(品牌:ElecSuper/静芯微)是一款符合TIA/EIA-485标准的半双工RS-485收发器。器件工作电压范围为4.5V5.5V,单驱动器、单接收器配置,支持高达2.5Mbps的数据速率,网络节点支持32个。封装为SOP-8,适用于工业级温度(-40℃+85℃),并提供强大的总线保护和低功耗特性,满足苛刻现场环境与长期可靠性需求。

二、核心特性

  • 电源与性能:工作电压5V典型,最高数据速率2.5Mbps,静态电流仅约300µA,支持低功耗模式与使能关断。
  • 总线与ESD保护:总线端口HBM静电放电保护≥±15kV,总线耐压范围±15V,增强现场抗扰度与器件健壮性。
  • 保护与控制功能:提供热插拔保护、Tx/Rx使能(DE/RE控制)、热关断保护、过流保护和热关断后恢复策略,提升系统安全性。
  • 通讯模式:半双工通信,适配传统RS-485多点网络拓扑(最多32结点标准兼容)。

三、典型应用场景

  • 工业自动化现场总线、PLC与远程I/O模块;
  • 楼宇自控、安防系统与门禁网络;
  • 仪器仪表、智能电表和数据采集终端;
  • HVAC、环境监测与其他需要鲁棒RS-485通信的场合。

四、封装与引脚(简要)

  • 封装:SOP-8,利于自动贴装与批量生产。
  • 常用引脚:VCC、GND、A(B)、B(A)、DI(驱动输入)、RO(接收输出)、DE(驱动使能)、RE(接收使能)。设计时注意DE/RE的逻辑配合以实现半双工收发控制。

五、设计与布板建议

  • 在A、B总线上使用差分终端电阻(如120Ω)以防反射,长线或高速链路需适当选择阻值。
  • 总线偏置与失效保护:为保证空闲总线状态建议在主站或最后节点加入偏置电阻网络(Pull-up/Pull-down)。
  • 电源旁路:VCC旁放置0.1µF陶瓷电容并靠近器件引脚,抑制瞬态与提高稳定性。
  • ESD与浪涌防护:尽管器件本身具有±15kV HBM保护,现场仍建议配合共模扼流圈、TVS二极管或外部过流器件以增强可靠性。
  • 热与过流保护:在多节点或高负载场景,确保散热与限流设计,避免长时间过流触发热关断影响通信。

六、使用注意事项

  • 在半双工网络中严格控制DE/RE时序,避免总线冲突;短时间高频切换时关注驱动器空闲与接收器恢复时间。
  • 热插拔场景下,建议使用分级上电或软使能控制以减少插拔瞬态对总线的冲击。
  • 在高噪声工业环境下,配合合理的接地、屏蔽与布线策略以保证信号完整性与通信稳定性。

MAX485ESA+T以其高耐受总线电压、强ESD能力、完善的保护功能与低功耗特性,适合需要可靠RS-485通信与工业现场总线保护的各类系统。若需参考电气参数、时序图或详细引脚说明,请参阅Datasheet以完成具体硬件设计与验证。

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