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Maxim产品 - MAX3081介绍
MAX3081 - 失效保护、高速(10Mbps)、限摆率、RS-485/RS-422收发器


MAX3081 - 失效保护、高速(10Mbps)、限摆率、RS-485/RS-422收发器 - 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


The MAX3080-MAX3089 high-speed transceivers forRS-485/RS-422 communication contain one driver andone receiver. These devices feature fail-safe circuitry,which guarantees a logic-high receiver output when thereceiver inputs are open or shorted. This means thatthe receiver output will be a logic high if all transmitterson a terminated bus are disabled (high impedance).The MAX3080/MAX3081/MAX3082 feature reducedslew-rate drivers that minimize EMI and reduce reflectionscaused by improperly terminated cables, allowingerror-free data transmission up to 115kbps. TheMAX3083/MAX3084/MAX3085 offer higher driver outputslew-rate limits, allowing transmit speeds up to500kbps. The MAX3086/MAX3087/MAX3088's driverslew rates are not limited, making transmit speeds upto 10Mbps possible. The MAX3089's slew rate isselectable between 115kbps, 500kbps, and 10Mbpsby driving a selector pin with a single three-state driver.

These transceivers typically draw 375µA of supplycurrent when unloaded, or when fully loaded with thedrivers disabled.

All devices have a 1/8-unit-load receiver input impedancethat allows up to 256 transceivers on the bus. TheMAX3082/MAX3085/MAX3088 are intended for halfduplexcommunications, while the MAX3080/MAX3081/MAX3083/MAX3084/MAX3086/MAX3087 are intendedfor full-duplex communications. The MAX3089 is selectablebetween half-duplex and full-duplex operation. Italso features independently programmable receiverand transmitter output phase via separate pins.

  • 以下关键特性由Maxim美信半导体提供:
  • For Fault-Tolerant Applications:
    MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
  • For Low-Voltage Applications:
    MAX3362: +3.3V, High-Speed, RS-485/RS-422Transceiver in a SOT23 Package
  • For Multiple Transceiver Applications:
    MAX3030E-MAX3033E: ±15kV ESD-Protected,+3.3V, Quad, RS-422 Transmitters
    MAX3040-MAX3045: ±10kV ESD-Protected, Quad,+5V, RS-485/RS-422 Transmitters
  • 热门应用
  • 工业控制局域网
  • 电平转换器
  • RS-422/RS-485通信
  • 用于EMI敏感应用的收发器
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