MAX485 - RS-485 RS-422 Transceiver IC

MAX485 - RS-485 RS-422 Transceiver IC

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MAX485 - RS-485/RS-422 Transceiver IC

The MAX485 is low-power transceivers for RS-485 and RS- 422 communication. The IC contains one driver and one receiver. The driver slew rates of the MAX485 is not limited, allowing them to transmit up to 2.5Mbps. These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers. All parts operate from a single 5V supply. Drivers are short-circuited 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 MAX485 is designed for half-duplex applications.



  • Device Type: Transceiver
  • No. of Drivers: 1
  • Supply Voltage Range: 4.75V to 5.25V
  • Driver Case Style: DIP
  • No. of Pins: 8
  • Operating Temperature Range: 0°C to +70°C
  • Base Number: 485
  • Data Rate: 2.5Mbps
  • Device Marking: MAX485CPA+
  • Digital IC Case Style: DIP
  • IC Generic Number: 485
  • IC Temperature Range: Commercial
  • Interface: RS-422 / RS-485
  • Interface Type: RS422, RS485
  • Line / Bus Driver / Receiver / Transceiver Type: CMOS Differential
  • Logic Function Number: 485
  • No. of Receivers: 1
  • Operating Temperature Max: 70°C
  • Operating Temperature Min: 0°C
  • Package / Case: DIP
  • Supply Current: 500µA
  • Supply Voltage Max: 5.25V
  • Supply Voltage Min: 4.75V
  • Termination Type: Through Hole
  • Transceiver Type: Differential


  • Low Quiescent Current: 300µA
  • -7V to +12V Common-Mode Input Voltage Range
  • Three-State Outputs
  • 30ns Propagation Delays, 5ns Skew
  • Operate from a Single 5V Supply
  • Allows up to 32 Transceivers on the Bus
  • Data rate: 2.5 Mbps
  • Current-Limiting and Thermal Shutdown for Driver Overload Protection
  • The transmitter outputs and receiver inputs are protected to ±15kV Air ESD


  • Low-Power RS-485 Transceivers
  • Low-Power RS-422 Transceivers
  • Level Translators
  • Transceivers for EMI-Sensitive Applications
  • Industrial-Control Local Area Networks

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  • Product Code: MAX485-IC
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Tags: max485, max485, rs422, transceiver, ic