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ADI/LINEAR MAX3490EESA+T MAX3490EESA
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR MAX3490EESA+T
- Type
- ADI/LINEAR
- Minimum package
- 2500 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- MAX3490EESA+T
- Electronic Component
- 1
- Package
- SOIC-8
- Type
- Transceiver
- Electronic Component
- RS-485 / RS-422IC
- Electronic Component
- 0.219g
- Electronic Component
- 1
- Electronic Component
- BM0257647787
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 3V~3.6V
- Receiver
- 1
- Data
- 10Mbps
- Communication
- Electronic Component
- Static Current
- 2.2mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MAX3490EESA+T 产品概述
一、产品简介
MAX3490EESA+T 是一款为工业级通信设计的 RS-422/RS-485 收发器，单驱动器、单接收器（1 driver / 1 receiver），工作电压为 3.0V 至 3.6V（典型 3.3V），支持全双工通信。器件采用 SOIC-8 封装，工作温度范围为 -40℃ 至 +85℃，静态电流约为 2.2mA，适合对功耗和空间有严格要求的嵌入式系统与工业控制终端。
二、主要特性
- 支持 RS-422/RS-485 协议，差分接口，抗干扰能力强。
- 数据速率可达 12Mbps（器件为 slew-rate-limited 以降低 EMI），在常见应用中可稳定运行于 10Mbps。
- 高等级静电放电保护：±15kV（具体测试标准视厂商资料为准），提升系统可靠性。
- 全双工通信，便于点对点或多点实时数据交换。
- 宽电源电压范围：3.0V–3.6V，兼容 3.3V 系统电源。
- 工作温度范围 -40℃ 至 +85℃，适用于工业级环境。
- 低静态电流（Iq ≈ 2.2mA），利于电池供电或能耗受限系统。
三、典型应用
- 工业自动化现场总线（PLC、伺服通讯）
- 楼宇自动化与安防监控设备
- 数据采集与传感网络（SCADA）
- 仪器仪表与测试测量设备
- 串口扩展、嵌入式通信接口
四、封装与引脚概述
标准 SOIC-8 封装，便于 PCB 布局与自动贴装。常见引脚功能包括：差分总线 A/B、驱动输入 DI、驱动使能 DE、接收输出 RO、接收使能/复位 RE（有些产品为低有效）、VCC 与 GND。设计时请参考器件具体数据手册获取精确引脚定义与管脚排列。
五、设计建议与注意事项
- 电源旁路：VCC 侧靠近器件放置 0.1μF 陶瓷电容与 1μF 电解/钽电容以稳定电源。
- 总线终端：长线或高速链路建议在两端并联放置阻性终端（通常 120Ω）并考虑公共模式隔离。
- 差分偏置：对于多节点 RS-485 网络建议使用偏置电阻或收发器内置偏置功能以保证空闲总线的确定电平。
- EMI/ESD 管理：虽然器件具备 ±15kV 抗静电能力，仍建议在易受干扰环境使用共模扼流圈、TVS 二极管等保护电路以延长系统寿命。
- 布线：差分对尽量成对且长度匹配，远离数字高频信号线，接地应有良好回流路径。
六、小结
MAX3490EESA+T 以其 3.3V 低功耗、工业级温度范围、高速差分通信能力和 ±15kV 静电防护，适合对可靠性和抗干扰有较高要求的现场总线与嵌入式通信应用。欲获得完整电气特性、典型应用电路与详细引脚信息，请参阅厂商数据手册以完成最终设计验证。
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