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MAXLINEAR SP485EN-L/TR SP485EN
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- MAXLINEAR SP485EN-L / TR
- Type
- MAXLINEAR
- Unit
- Electronic Component
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- MAXLINEAR
- Electronic Component
- SP485EN-L/TR
- Electronic Component
- 1
- Package
- SOP-8
- Type
- Transceiver
- Electronic Component
- RS-485 / RS-422IC
- Electronic Component
- 0.336g
- Electronic Component
- 1
- Features
- Tx / Rx
- Electronic Component
- BM0000515108
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 4.75V~5.25V
- Receiver
- 1
- Data
- 5Mbps
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SP485EN-L/TR 产品概述
一、产品简介
SP485EN-L/TR 是 MAXLINEAR（迈凌）推出的一款高性能半双工收发器，封装为 SOP-8，集成 1 路驱动器和 1 路接收器，适用于工业总线和点对点差分通信场景。器件工作电压为 4.75V ～ 5.25V，工作温度范围 -40℃ ～ +85℃，设计兼顾低功耗与高数据速率，能够满足苛刻环境下的可靠通信需求。
二、主要技术参数
- 通信模式：半双工（1 驱动 / 1 接收）
- 数据速率：最高 5 Mbps
- 工作电压：4.75V ～ 5.25V
- 静态电流：900 μA（静态功耗低，适合长时间待机场景）
- 工作温度：-40℃ ～ +85℃
- 封装形式：SOP-8（TR 表示卷带包装，便于 SMT 贴片生产线使用）
三、主要功能与优势
- 稳定的差分通信能力：支持高达 5 Mbps 的差分数据传输，适合工业自动化、楼宇控制等对带宽有要求的应用。
- 低静态功耗：900 μA 的静态电流在总线空闲或待机状态下可显著降低系统能耗。
- 宽温工作范围：-40℃ ～ +85℃ 满足工业级温度要求，适合户外或恶劣环境。
- 标准封装与生产友好：SOP-8 兼容常见 PCB 设计，TR 卷带包装便于批量生产与库存管理。
四、典型应用场景
- 工业自动化通信总线（例如基于 RS-485 的监控与控制系统）
- 楼宇自动化与安防控制器之间的差分链路
- 仪器仪表的数据采集与远程传输
- 智能电表、能源管理和其他需要抗干扰差分通信的设备
五、设计与使用建议
- 线路终端匹配：建议在总线两端采用 120 Ω 左右的差分终端电阻以减少反射；在多节点网络中应合理布局终端电阻，避免多重终端影响信号完整性。
- 总线偏置：为保证空闲总线的确定电平，可采用上拉/下拉偏置电阻或总线偏置网络，防止接收器浮空导致误触发。
- 半双工控制：该类芯片通常需要方向控制（DE/RE）或通过片选控制实现发送/接收切换，注意切换延时以及主从时序，避免总线冲突。
- PCB 布局：差分对走线应保持阻抗匹配、对称走线并避免与高频信号平行耦合；接地面连续，尽量靠近器件地脚放置去耦电容。
- ESD 与浪涌防护：在工业环境中建议额外增加 TVS 二极管或防雷保护，提升抗瞬态干扰能力。
六、包装与可靠性
SP485EN-L/TR 中的 TR 后缀表明采用卷带（Tape & Reel）包装，适合自动化 SMT 贴装线，便于大批量生产与仓储管理。器件的工作温度和低静态电流特性使其在长期运行和节能设计中具备良好可靠性表现。
七、结论
SP485EN-L/TR 是一款面向工业及嵌入式差分通信场景的高性价比半双工收发器。结合 5 Mbps 的速率、工业级温度范围、低静态功耗及标准封装，适用于需要稳定、抗干扰通信的各类系统。在设计时注意总线终端匹配、偏置与方向控制等要点，可获得可靠的通信性能与长期稳定运行。
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