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MAXLINEAR SP3491EN-L/TR SP3491EN
Configuration
1 options
Configuration
Option 139829
Availability on request
Technical data
Product details
20
specifications
Core information
- Product name
- MAXLINEAR SP3491EN-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
- SP3491EN-L/TR
- Electronic Component
- 1
- Package
- SOIC-14
- Type
- Transceiver
- Electronic Component
- RS-485 / RS-422IC
- Electronic Component
- 0.418g
- Electronic Component
- 32
- Electronic Component
- 1
- Features
- Tx / Rx
- Electronic Component
- BM0227101598
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 3V~3.6V
- Receiver
- 1
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SP3491EN-L/TR 产品概述
一、概述
SP3491EN-L/TR 是 MAXLINEAR（迈凌）推出的一款单通道全双工 RS-485/RS-422 收发器（IC TRANSCEIVER FULL 1/1），封装为 SOP-14。器件工作电压范围为 3.0V 至 3.6V，工作温度范围为 -40℃ 至 +85℃，适用于工业级和嵌入式系统中的差分串行通信需求。器件内部集成一个驱动器和一个接收器，支持多节点组网（最多 32 个节点），具备良好的静电保护能力（±2kV）。
二、主要特性
- 全双工通信模式，支持同时发送与接收数据。
- 数据速率最高可达 10 Mbps，满足高速差分通信要求。
- 低静态电流：静态电流约 1 mA，有利于低功耗系统设计。
- 单路驱动器和单路接收器配置（1/1），简化点对点或多点拓扑设计。
- 宽电源电压：3.0V ~ 3.6V，兼容 3.3V 系统。
- 工作温度：-40℃ 至 +85℃，适合工业环境。
- ESD 保护等级 ±2kV，提高现场可靠性。
- 支持最多 32 节点的总线网络，适合中等规模多点通信。
三、典型应用场景
- 工业自动化现场总线与传感器网络。
- 串行数据采集与远程控制终端（RTU/PLC）。
- 工控设备、楼宇自控（BMS）、安防系统通信。
- 嵌入式主控与外设之间的差分串行链路。
- 需要低功耗与抗干扰能力的通信场合。
四、封装与接口注意事项
- 封装：SOP-14，便于通过孔板或贴装加工。
- 推荐在差分信号线上使用差分阻抗匹配并加终端电阻以降低反射与提高信号完整性。
- 在高噪声工业环境下，建议加装隔离/滤波电路和共模扼流圈以增强抗干扰能力。
- PCB 布局应注意：差分对走线尽量成对、长度匹配，接地层完整以降低 EMI。
五、优势与选用建议
SP3491EN-L/TR 提供 10 Mbps 的较高数据速率与低静态功耗，适合在功耗敏感且需高速数据交换的系统中使用。器件的工作温度与 ESD 抗扰能力使其在工业环境中更可靠。选型时若系统电压为 3.3V，且只需单通道全双工收发，可优先考虑此型号；若需更多通道或更高 ESD 等级，可参照厂商其它型号对比。
六、结论
SP3491EN-L/TR 是一款面向工业与嵌入式差分串行通信的可靠收发器，结合了高速传输、低功耗与工业级耐受性，适用于点对点或多点 RS-485/RS-422 应用。设计时注意差分阻抗匹配、终端与接地处理，可获得最佳通信性能与现场可靠性。若需器件数据手册或评估板资料，可向 MAXLINEAR 供应商索取详细技术文档。
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