WMSIC Electronic Components

MAXLINEAR SP491EEN-L/TR SP491EEN

ModelSP491EEN-L/TR
PackageSOP-14
BrandMAXLINEAR
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

20 specifications

Core information

Product name
MAXLINEAR SP491EEN-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
SP491EEN-L/TR
Electronic Component
1
Package
SOP-14
Type
Transceiver
Electronic Component
RS-485 / RS-422IC
Electronic Component
0.418g
Electronic Component
32
Electronic Component
1
Features
Tx / Rx
Electronic Component
BM0226287227
Operating Temperature
40℃~+85℃
Operating Voltage
4.75V~5.25V
Receiver
1

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

SP491EEN-L/TR 产品概述

一 概述

SP491EEN-L/TR 为 MAXLINEAR(迈凌)推出的一款单路发送、单路接收(1/1)的差分收发器,封装为 SOP-14。器件支持全双工通信,工作电压范围为 4.75V 至 5.25V,工作温度范围为 -40℃ 至 +85℃,适合工业级现场总线与点对点差分通信应用。器件设计强调低静态功耗和高抗扰性,是需要高可靠性和长期稳定性的系统理想之选。

二 主要特性

  • 全双工差分收发器,驱动器/接收器各 1 路
  • 数据速率高达 10 Mbps,适用于短距离高速差分通信
  • 静态电流典型值 900 μA,便于低功耗系统设计
  • 节点数支持到 32 节点(典型总线拓扑)
  • 工作电压:4.75V ~ 5.25V,兼容 5V 主流系统
  • 封装:SOP-14,利于表面贴装与密度设计
  • 静电保护:±15 kV(人体模型),增强现场抗静电能力

三 引脚与封装建议

SOP-14 封装便于在 PCB 上实现紧凑布局。典型引脚包括 VCC、GND、差分发送对(A、B)、差分接收对(A’、B’)、使能/方向控制等。布局建议将差分对成对走线,保证差分特性匹配并靠近接收端加入终端匹配电阻。

四 应用场景

  • 工业自动化总线与设备间数据通信
  • 过程控制、仪器仪表的数据采集接口
  • 串行差分通信替代方案(如 RS-485/RS-422 类应用)
  • 需要抗静电与宽温工作范围的嵌入式系统

五 设计注意事项与典型电路

  • 差分对应使用适当阻抗匹配(终端电阻通常等于差分对特性阻抗,常见为 120Ω)以减少反射。
  • 如总线多节点应用,合理安排偏置与失效保护以保证线空闲状态电平正确。
  • 供电旁路:VCC 处建议并联 0.1 μF 与 1 μF 陶瓷电容以抑制高频噪声。
  • PCB 布局:差分线短且成对、远离高速开关电源与大电流回路,地平面连续以降低共模干扰。

六 可靠性与环境适配

器件支持 -40℃ 至 +85℃ 工业温度范围,并具备 ±15 kV HBM 级静电保护,适合工厂、楼宇及户外接口处的使用。选型时还应考虑系统整体的浪涌、瞬态抑制与长期热管理策略。

七 选型建议

若系统要求 5V 工作电压、全双工通信、节点数约几十个且追求低静态功耗与高抗扰能力,SP491EEN-L/TR 为合适选择。结合 PCB 实际走线与终端匹配、电源滤波设计,可在工业级环境中实现稳定可靠的数据链路。

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