MAX1480A

完备的隔离型、RS-485/RS-422数据接口


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说明

MAX1480A/MAX1480B/MAX1480C/MAX1490A/MAX1490B是完备的电气隔离型RS-485/RS-422数据通信接口方案,采用混合微电路结构。由收发器、光耦和变压器构成的完备的隔离接口被集成到标准的DIP封装内。逻辑侧的+5V单电源同时为接口两侧的电路供电。

MAX1480B/MAX1480C/MAX1490B的限摆率驱动器能够最大程度地降低EMI,并降低电缆不良匹配造成的反射,允许以最高250kbps的数据速率进行无误码数据传输。MAX1480A/MAX1490A的驱动器不限制摆率,传输速率可达2.5Mbps。MAX1480A/B/C针对半双工通信而设计,而MAX1490A/B可以实现全双工通信。

驱动器的短路电流受限,并且当功耗过大时热关断电路可将驱动器输出置为高阻态以防器件损坏。接收器输入具有失效保护特性,当输入开路时可保证已知的输出状态(MAX1480A/B/C的/RO为低电平,MAX1490A/B的RO为高电平)。

MAX1480A/MAX1480B/MAX1480C/MAX1490A/MAX1490B可以承受1600VRMS (1分钟)或2000VRMS (1秒钟)电压。器件的隔离输出满足所有RS-485/RS-422规范。MAX1480A/B/C采用28引脚DIP封装,MAX1490A/B采用24引脚DIP封装。
MAX1490A、MAX1490B:引脚配置 MAX1490A、MAX1490B:引脚配置 放大+

关键特性

  • 集成ESD保护的器件
    • MAX1480E/MAX1490E:±15kV ESD保护、隔离型、RS-485/RS-422数据接口
  • 空间受限的应用
    • MAX3157:高共模抑制比RS-485收发器,带有±50V隔离

应用

  • 自动测试设备(ATE)
  • HVAC/楼宇控制网络
  • 工业控制局域网
  • 隔离型RS-485/RS-422数据接口
  • 用于EMI敏感应用的收发器

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
产品可靠性报告: MAX1480A.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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