WMSIC Electronic Components

ADI/LINEAR MAX3485ESA+T MAX3485ESA

ModelMAX3485ESA+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 MAX3485ESA+T
Type
ADI/LINEAR
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ADI(Analog Devices) / LINEAR
Electronic Component
MAX3485ESA+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;;;; Low Power
Electronic Component
BM0257688391
Operating Temperature
40℃~+85℃
Operating Voltage
3V~3.6V
Receiver
1
Data
10Mbps

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

MAX3485ESA+T 产品概述

一、产品简介

MAX3485ESA+T 是 ADI/LINEAR 系列的一款 RS-422/RS-485 收发器,工作电压 3.0V–3.6V(典型 3.3V)供电,支持高达 10Mbps 的数据速率并内置速率限制(slew-rate limiting)以降低电磁干扰。器件采用 SOIC-8 封装,集成 1 路驱动器与 1 路接收器,适用于半双工通信拓扑,可在多点总线环境中实现可靠的差分数据传输。

二、主要性能参数

  • 类型:RS-422 / RS-485 收发器(半双工)
  • 驱动器数:1,接收器数:1
  • 工作电压:3.0V ~ 3.6V(3.3V 兼容)
  • 数据速率:最高 10 Mbps(视线路长度与拓扑而定)
  • 节点数:支持典型 RS-485 多点总线的最多 32 个节点
  • 工作温度:-40 ℃ ~ +85 ℃
  • 封装:SOIC-8(工业级封装)

三、关键特性与优势

  • 速率限制设计:内置 slew-rate limiter,有效降低沿冲量与 EMI,便于满足电磁兼容设计需求。
  • 差分接口:支持差分信号传输,抗干扰能力强,适合工业现场长线通信。
  • 低压运行:原生 3.3V 电源兼容,适配现代低压逻辑系统。
  • 工业温度范围:-40℃ 至 +85℃,满足恶劣环境下的稳定性要求。
  • 标准封装:SOIC-8 易于 PCB 布局与替换。

四、典型应用场景

  • 工业自动化与现场总线(PLC、现场仪表通讯)
  • 楼宇控制与安防系统(门禁、照明、环境监控)
  • 仪器仪表与数据采集系统(多点数据汇集)
  • 串口扩展与多节点通信网络

五、设计与使用建议

  • 终端匹配:差分总线两端采用 120Ω 终端电阻以抑制反射,短支线尽量避免分叉。
  • 偏置处理:为避免总线空闲时接收器浮动,建议在主机端配置上拉/下拉偏置电阻或使用强制偏置电路。
  • 去耦与布局:VCC 旁放置 0.1µF 去耦电容,收发器靠近接口器件布置;差分对走线保持阻抗一致且尽量并行。
  • 抗冲击保护:根据系统环境考虑在总线两端添加 TVS 或共模扼流圈以增强抗浪涌与 EMI 能力。
  • 半双工控制:若用于半双工 RS-485 总线,注意驱动器使能/方向控制逻辑,避免总线冲突。

六、采购与兼容信息

该器件属于 ADI(原 Maxim/Linear)系列,型号 MAX3485ESA+T,封装 SOIC-8,适用于工业级应用。选型时请确认温度等级、封装与单件/带盘包装需求,并参考厂商数据手册获取详细电气特性、典型应用电路与 PCB 布局建议。

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