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ADI/LINEAR MAX485CSA+T MAX485CSA
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR MAX485CSA+T
- Type
- ADI/LINEAR
- Minimum package
- 2500 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- MAX485CSA+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
- BM0258655362
- Operating Temperature
- 0℃~+70℃
- Operating Voltage
- 4.75V~5.25V
- 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.
MAX485CSA+T 产品概述
一、产品简介
MAX485CSA+T 是 ADI/Linear 系列的低功耗、限速（slew-rate-limited）RS-485/RS-422 收发器，提供单路驱动器与单路接收器，采用标准 SOIC-8 封装。器件专为半双工多点差分总线设计，在 5V 电源下实现高达 2.5Mbps 的通信速率，同时兼顾电磁兼容性与低静态功耗，适用于对抗干扰与功耗有要求的应用场景。
二、主要参数
- 类型：收发器（Transceiver）
- 驱动器数/接收器数：1 驱动 / 1 接收
- 工作电压：4.75V ~ 5.25V
- 数据速率：最高 2.5 Mbps
- 总线节点数：最多 32 节点（总线多点支持）
- 工作温度：0℃ ~ +70℃（商业级）
- 静态电流：典型 300 μA（低功耗）
- 通讯模式：半双工（单对差分线）
- 封装：SOIC-8
三、关键特性与优势
- 低静态电流：约 300 μA 的静态电流使其在待机或低占空比通信时显著降低能耗，适合对功耗敏感的系统。
- 限速输出：slew-rate-limited 设计减少线路上边沿陡峭度，降低电磁干扰（EMI）与信号反射，有利于在较长线缆或复杂布线环境中稳定传输。
- 高速能力：在保证电磁兼容的前提下可支持高达 2.5 Mbps 的速率，满足大多数工业与自动化通信需求。
- 多点连接能力：支持最多 32 个节点的半双工总线拓扑，便于实现分布式控制与远程采集。
四、典型应用
- 工业控制与现场总线节点
- 楼宇自动化与安防系统
- 串行远程数据采集（RTU/PLC）
- POS 终端、仪器仪表与电力监控设备
- 需要低功耗与良好抗扰性的差分串行链路
五、设计与使用注意事项
- 终端匹配：建议在总线两端使用 120 Ω 终端电阻以抑制反射；长线和高数据率下更为关键。
- 总线偏置：为保证空闲时总线状态稳定，应采用偏置电阻（pull-up/pull-down）或外部偏置网络，避免浮空引起误触发。
- 电源与去耦：芯片电源旁应放置 0.1 μF 陶瓷去耦电容，尽量靠近 VCC 引脚布置。
- 差分线布局：按差分对布线、阻抗控制、缩短回流路径，避免分叉与长支线。
- 抗干扰保护：在工业环境建议添加共模电感、TVS 或浪涌保护器以提高抗干扰与浪涌能力。
- 工作环境：器件为商业温度等级（0~+70℃），在更苛刻环境需选用工业级器件或采取环境控制措施。
六、封装与订购信息
- 型号：MAX485CSA+T
- 品牌：ADI（Analog Devices，含 Linear 技术）
- 封装：SOIC-8，便于 PCB 量产与手工焊接调试。
总结：MAX485CSA+T 将低功耗与限速输出相结合，适合需要在 5V 总线上实现稳定高速差分通信且关注 EMI 与功耗的应用。选型时请根据实际线长、节点数与工作环境做出相应的终端、偏置和防护设计。
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