WMSIC Electronic Components

ADI/LINEAR MAX490ESA+T MAX490ESA

ModelMAX490ESA+T
PackageSOIC-8
BrandADI/LINEAR
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ADI(Analog Devices) / LINEAR MAX490ESA+T
Type
ADI/LINEAR
Minimum package
2500

Technical parameters

Electronic Component
ADI(Analog Devices) / LINEAR
Electronic Component
MAX490ESA+T
Electronic Component
1
Package
SOIC-8
Type
Transceiver
Electronic Component
RS-485 / RS-422IC
Electronic Component
0.219g
Electronic Component
32
Electronic Component
1
Features
Tx / Rx
Electronic Component
BM0258688051
Operating Temperature
40℃~+85℃
Operating Voltage
4.75V~5.25V
Receiver
1
Data
2.5Mbps
Communication
Electronic Component

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

MAX490ESA+T 产品概述

一、产品简介

MAX490ESA+T 是一款面向工业通信的低功耗、斜率限幅 RS-485/RS-422 单驱动器/单接收器收发器,适用于典型 5V 系统。器件在低静态电流条件下提供高达 2.5Mbps 的数据速率,能在多节点总线环境中保证可靠的数据传输,封装为 SOIC-8,温度等级覆盖 -40℃ 到 +85℃,品牌归属 ADI(Analog Devices / Linear)。

二、关键参数

  • 类型:收发器(Transceiver)
  • 驱动器数:1;接收器数:1
  • 工作电压:4.75V ~ 5.25V
  • 数据速率:最高 2.5Mbps
  • 支持节点数:最大 32 个节点(典型 RS-485 拓扑)
  • 工作温度:-40℃ ~ +85℃
  • 静态电流:约 300µA(低功耗特性)
  • 通讯模式:全双工(支持 RS-422/RS-485 全双工链路)
  • 封装:SOIC-8

三、主要特性与优势

  • 低功耗:静态电流约 300µA,适合长时间在线或电源受限场景。
  • 斜率限幅(Slew-Rate-Limited):限制边沿陡度,减少电磁干扰(EMI)与传输线反射,提高长线/高速时的信号完整性。
  • 宽工作温度:适合工业级环境应用。
  • 简单集成:标准 SOIC-8 封装便于 PCB 布局与量产装配。

四、典型应用

  • 工业自动化总线(PLC、传感器网络)
  • 数据采集与远端 IO 模块
  • 串行通信转换器、网关设备
  • 仪器仪表、楼宇控制系统

五、设计要点与建议

  • 总线终端:在总线两端使用合适阻值的差分终端电阻以避免反射(例如 120Ω),并根据线缆特性调整。
  • 偏置与空闲状态:若系统无内部偏置,请在设计中加入上拉/下拉偏置以确定空闲电平,避免噪声触发。
  • 接地与走线:差分对尽量成对走线、差分长度匹配,并保证良好接地以降低共模干扰。
  • 电源去耦:靠近器件放置陶瓷电容做去耦,降低瞬态干扰对通信性能的影响。
  • ESD 与浪涌防护:工业环境建议在差分对入口处加 TVS 或过流保护器件,增强系统鲁棒性。

六、封装与采购信息

  • 型号:MAX490ESA+T
  • 封装:SOIC-8(便于 DIP/SMD 工艺集成)
  • 品牌:ADI(Analog Devices / Linear)
  • 适用温度:-40℃ ~ +85℃

总结:MAX490ESA+T 以低功耗、斜率控制与工业温度范围为主要卖点,适合需要 5V 供电、2.5Mbps 速率以及最多 32 节点的差分串行通信场景。在总线终端化、偏置管理和 PCB 布局得当的前提下,可为工业与嵌入式系统提供稳定、低干扰的双向差分通信能力。

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