WMSIC Electronic Components

HGSEMI MAX3485ECMM/TR MAX3485ECMM

ModelMAX3485ECMM/TR
PackageMSOP-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 MAX3485ECMM / TR
Type
HGSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
MAX3485ECMM/TR
Electronic Component
1
Package
MSOP-8
Type
Transceiver
Electronic Component
RS-485 / RS-422IC
Electronic Component
0.15g
Electronic Component
256
Electronic Component
1
Features
Tx / Rx;;;; Low Power
Electronic Component
BM0227708177
Operating Temperature
0℃~+70℃
Operating Voltage
3V~3.6V
Receiver
1
Data
12Mbps

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

MAX3485ECMM/TR 产品概述 — HGSEMI(华冠)

一、产品简介

MAX3485ECMM/TR 是一款面向工业通信的半双工差分收发器,封装为 MSOP-8,适用于低电压系统(工作电压 3.0V~3.6V)。器件支持高达 12Mbps 的数据速率,静态电流约 800μA,器件等级适合工作温度 0℃~+70℃ 的商业级环境。该器件提供 1 个驱动器和 1 个接收器,可在多节点总线(最多 256 节点)中作为 RS-485/RS-422 风格的物理层芯片使用。

二、主要特性

  • 工作电压:3.0V ~ 3.6V,兼容 3.3V 系统设计。
  • 数据速率:最高支持 12Mbps,满足高速差分通信需求。
  • 工作模式:半双工,单线驱动与接收,适用多点总线拓扑。
  • 功耗:静态电流约 800μA,适合低功耗系统。
  • 节点支持:可支持多达 256 个节点(系统兼容时),便于大规模分布式网络部署。
  • 封装:MSOP-8,小尺寸便于板级空间受限的应用。

三、典型应用场景

  • 工业自动化现场总线(传感器/执行器网络)
  • 楼宇控制、楼宇管理系统 (BMS) 通信链路
  • 智能仪表、远程抄表数据采集网关
  • 低速到高速串行多点通信、PLC 与 I/O 模块互联
  • 任何需要差分抗干扰、长距离传输的 3.3V 系统

四、设计注意事项

  • 总线终端与偏置:为保证信号完整性和总线空闲时的确定状态,应在总线两端加合适阻值的终端电阻(通常为 120Ω)和偏置电阻网络。
  • 驱动器使能控制:半双工模式下需正确管理 DE/RE(驱动/接收使能)信号,避免总线冲突与短脉冲。
  • 布线与滤波:差分对匹配布线、最小化串扰与反射;必要时在电源与信号线上加入滤波/共模抑制器件。
  • ESD 与浪涌保护:工业环境建议在线路端加入 TVS 和熔断/限流器件,提高抗浪涌能力与可靠性。
  • 热管理:MSOP-8 封装热耗有限,需注意大电流或高密度板上散热路径,保证在规定温度范围内稳定工作。

五、可靠性与兼容性

该收发器适配 RS-485/RS-422 差分通信协议的物理层要求,可在多种通信拓扑中互换使用。工作温度 0~+70℃,适合商用与一般工业环境,但在更苛刻的高温或极端环境下应选用更高温度等级器件或做额外防护。建议在系统级测试中验证总线加载、故障模式和节点数量下的通信稳定性。

六、封装与采购建议

MSOP-8 小封装利于高密度设计,采购时请确认原厂与代理的型号标识和批号(HGSEMI/华冠)。工程样片与量产前应进行完整的功能、电气与环境测试,包括长期老化、EMC/抗干扰测试以及现场级别的浪涌与静电测试,以确保在目标应用中的可靠性。

总结:MAX3485ECMM/TR 提供了低功耗、3.3V 驱动下的高速半双工差分收发能力,适合多点、抗干扰要求高的工业与楼宇控制应用。合理的总线终端、使能管理与防护设计是成功应用的关键。

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