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Siproin MAX3085
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Siproin MAX3085
- Type
- SIPROIN
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SIPROIN
- Electronic Component
- MAX3085
- Electronic Component
- 1
- Package
- SOP-8
- Type
- Transceiver
- Electronic Component
- RS-485 / RS-422IC
- Electronic Component
- 0.17g
- Electronic Component
- 256
- Electronic Component
- 1
- Features
- Tx / Rx
- Electronic Component
- BM0226279111
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 5V
- Receiver
- 1
- Data
- 1Mbps
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MAX3085 产品概述
一、产品简介
MAX3085 是一款符合工业现场总线需求的半双工收发器（Transceiver），适配5V供电环境，工作温度范围为-40℃至+85℃。器件采用SOP-8封装，集成度高、易于布局，针对多节点差分总线设计，能支持最多256个节点连接，适用于工业控制、楼宇自控及仪表通信等场景。
二、主要性能参数
- 工作电压：5V 标准供电
- 数据速率：最高1Mbps，满足Modbus、Profibus等中低速场总线需求
- 静态电流：480μA（待机/静态条件），有利于降低系统静态功耗
- 通讯模式：半双工（单驱动器/单接收器）
- 节点数：最多支持256节点（拓扑与终端匹配有关）
- ESD 抗扰：±15kV（人体模型），提高现场抗静电能力
- 封装：SOP-8，节省PCB空间并便于SMT加工
三、应用场景
- 工业自动化：PLC 与现场设备间的长距离差分通信
- 楼宇控制：传感器网络与控制器的可靠通讯
- 仪表仪表：多节点数据汇集场合
- 低功耗通信系统：对待机功耗敏感的应用
四、功能与设计要点
- 半双工架构需外部方向控制：系统中应合理管理驱动器使能（DE/RE或等效信号）以避免总线冲突。
- 总线终端与偏置：为保证信号质量与空闲状态确定性，建议在总线两端采用终端电阻，并在适当位置加入偏置电阻形成总线静态状态。
- ESD 与浪涌保护：尽管器件本身具备±15kV静电保护，仍建议在现场侧增加TVS二极管与共模电感以提升抗干扰能力。
- 布线建议：差分对走线尽量并行、长度匹配，接地回流路径短且连续，避免大电流回路干扰。
五、封装与可靠性
SOP-8 小封装便于大批量组装与可靠性设计，器件工作温度覆盖工业级范围（-40℃~+85℃），适合长期现场运行。引脚排列和散热需参照厂方封装图与推荐焊盘设计。
六、使用建议与典型电路
- 典型接法：差分A/B两线接至收发器差分端，终端两端各并联一个适当阻值的终端电阻（常见120Ω），并在电源侧加入旁路电容。
- 多节点拓扑：采用总线型布线，避免星型连接，确保每条通信线尽量只连接线性节点。
- 调试要点：上线后检查空闲电平、终端匹配和方向控制时序，确认无总线冲突再投入运行。
总结：MAX3085（SOP-8）为面向工业与楼宇等多节点差分总线的实用型收发器，5V供电、1Mbps速率与低静态电流设计，在现场抗扰与系统成本间取得平衡，适合需要稳定、长距离差分通信的应用。
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