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Maxim产品 - MAX3480A介绍

MAX3480A - 完备的、隔离型、3.3V、RS-485/RS-422数据接口

MAX3480A是Maxim美信半导体公司的一款传感器与传感器接口产品，MAX3480A是完备的、隔离型、3.3V、RS-485/RS-422数据接口，本站介绍了MAX3480A的封装应用图解、特点和优点、功能等，并给出了与MAX3480A相关的Maxim元器件型号供参考。

MAX3480A - 完备的、隔离型、3.3V、RS-485/RS-422数据接口 - 传感器与传感器接口 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX3480A/MAX3480B are electrically isolated RS-485/RS-422 data-communications interfaces. Transceivers, optocouplers, and a transformer are all included in one low-cost, 28-pin DIP package. A single +3.3V supply on the logic side powers both sides of the interface.

The MAX3480B features reduced-slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The MAX3480A's driver slew rate is not limited, allowing transmission rates up to 2.5Mbps.

These devices typically draw 180mA of quiescent supply current. The MAX3480B provides a low-power shutdown mode in which it consumes only 0.2µA.

Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit.

The MAX3480A/MAX3480B typically withstand 1600VRMS (1 minute) or 2000VRMS (1 second). Their isolated inputs and outputs meet RS-485/RS-422 specifications.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Isolated Data Interface to 1600VRMS (1 minute)
  • Slew-Rate-Limited Data Transmission (MAX3480B)
  • High-Speed, Isolated, 2.5Mbps RS-485 Interface (MAX3480A)
  • -7V to +12V Common-Mode Input Voltage Range with Respect to Isolated Ground
  • Single +3.3V Supply
  • Current Limiting and Thermal Shutdown for Driver Overload Protection
  • Standard 28-Pin DIP Package
    • 热门应用
  • 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
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