WMSIC Electronic Components

HGSEMI MAX490EIM/TR MAX490EIM

ModelMAX490EIM/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 MAX490EIM / TR
Type
HGSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
MAX490EIM/TR
Electronic Component
1
Package
SOP-8
Type
Transceiver
Electronic Component
RS-485 / RS-422IC
Electronic Component
0.24g
Electronic Component
256
Electronic Component
1
Electronic Component
BM0265070251
Operating Temperature
40℃~+85℃
Operating Voltage
3V~5.5V
Receiver
1
Data
1mbps
Communication
Electronic Component

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

MAX490EIM/TR 产品概述

一、产品简介

MAX490EIM/TR 是一款面向 RS-485/RS-422 总线通信的高速收发器,集成一路驱动器和一路接收器,支持全双工通信。器件工作电压范围为 3.0V 到 5.5V,数据速率可达 1 Mbps,适用于多节点差分总线系统。产品由 HGSEMI(华冠)出品,面向工业和嵌入式通信应用,具有较高的抗静电和可靠性设计。

二、主要特性

  • 一路驱动器、一路接收器,支持全双工通信。
  • 工作电压:3.0V ~ 5.5V,兼容 3.3V 和 5V 系统。
  • 数据速率:最高 1 Mbps,适配常见工业总线速率需求。
  • 节点数支持:最多 256 节点,适合大规模多点网络。
  • 静态电流(静息电流):270 µA,低功耗设计利于电池供电系统。
  • ESD 保护:人体模式 ±15 kV,有助于提高现场连接器和端口的抗扰性。
  • 工作温度范围:-40 ℃ ~ +85 ℃,满足广泛工业级温度要求。
  • 内置失效保护电路,增强短路和异常负载情况下的安全性与可靠性。
  • 封装信息:未知(请以厂家资料为准)。

三、电气与环境指标

该器件在额定电压及温度范围内工作,低静态电流使其在待机或低活动场景下更节能。±15 kV HBM 的 ESD 抗扰能力适用于工业、楼宇和现场设备中频繁插拔或静电较高的环境。工作温度覆盖典型工业级范围,适合常见室内外工业环境。

四、典型应用场景

  • 工业自动化现场总线(PLC、I/O 模块)
  • 楼宇自控与安防系统(门禁、监控传输)
  • 电机控制与驱动通信
  • 数据采集与远程仪表(RTU、传感器网络)
  • 需要多点差分通信的嵌入式系统

五、设计与使用建议

  • 总线末端采用双端 120 Ω 终端电阻以抑制反射,常配偏置电阻确保失能时总线处于确定电平。
  • 布线时将差分对保持为对称、尽量短并控制阻抗,接地面连续,减少共模干扰。
  • 在电源端并联合适的去耦电容(如 0.1 µF)以稳定器件供电并抑制瞬态噪声。
  • 对于高干扰环境,接口处可增加 TVS 二极管或滤波器以增强系统鲁棒性。
  • 关注器件热耗与环境温度,必要时在布局中留有散热空间或采用良好散热设计。
  • 封装及引脚排列等具体信息请以厂商数据手册为准,订购型号为 MAX490EIM/TR 时核对库存与交付信息。

六、采购与技术支持

本产品由 HGSEMI(华冠)推出,具体封装形式和引脚定义请参阅厂家 Datasheet 或联系供应商获取样片与技术支持。设计评估时建议索取完整电气特性表与典型应用电路以保证兼容性与可靠运行。

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