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DS485 - 产品图解:
DS485-低功耗 RS-485/RS-422 多点收发器
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TI产品 - DS485介绍
DS485 - 低功耗 RS-485/RS-422 多点收发器

DS485是TI公司的一款无产品,DS485是低功耗 RS-485/RS-422 多点收发器,本页介绍了DS485的产品说明、应用、特性等,并给出了与DS485相关的TI元器件型号供参考。

DS485 - 低功耗 RS-485/RS-422 多点收发器 - 无 - RS-485收发器 - TI公司(Texas Instruments,德州仪器)

产品描述

The DS485 is a low-power transceiver for RS-485 and RS-422 communication. The device contains one driver and one receiver. The drivers slew rate allows for operation up to 2.5 Mbps (see section).

The transceiver draws 200 μA of supply current when unloaded or fully loaded with the driver disabled and operates from a single +5V supply.

The driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into TRI-STATE (High Impedance state) under fault conditions. The driver ensures a minimum of 1.5V differential output voltage with maximum loading across the common mode range (VOD3).

The receiver has a failsafe feature that ensures a logic-high output if the input is open circuit.

The DS485 is available in 8-pin SOIC and PDIP packages and is characterized for Industrial and Commercial temperature range operation.

产品特性

  • Meets TIA/EIA RS-485 Multipoint Standard
  • ensured Full Load Output Voltage (V OD3)
  • Low Quiescent Current: 200 μA typ
  • −7V to +12V Common-Mode Input Voltage Range
  • TRI-STATE Outputs on Driver and Receiver
  • AC Performance:
    • Driver Transition Time: 25 ns typ
    • Driver Propagation Delay: 40 ns typ
    • Driver Skew: 1 ns typ
    • Receiver Propagation Delay: 200 ns typ
    • Receiver Skew: 20 ns typ
  • Half-Duplex Flow Through Pinout
  • Operates From a Single 5V Supply
  • Allows Up To 32 Transceivers on the Bus
  • Current-Limiting and Thermal Shutdown For Driver Overload Protection
  • Industrial Temperature Range Operation
  • Pin and Functional Compatible With MAX485 and LTC485

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