100Mbps Full-Duplex 3V/5V RS-485/RS-422 Transceiver with High EFT Immunity

100Mbps Full-Duplex 3V/5V RS-485/RS-422 Transceiver with High EFT Immunity in SOIC 14 package

Please check latest availability status for a specific part variant.


The MAX22503E full-duplex, ESD-protected, RS-485/RS-422 transceiver for high-speed communication operates up to 100Mbps. This transceiver features larger receiver hysteresis for high noise rejection and improved signal integrity. Integrated hot-swap protection and a fail-safe receiver ensure a logic-high on the receiver output when input signals are shorted or open for longer than 10μs (typ).

The MAX22503E is available in 14-pin SOIC package and operates over the -40°C to +125°C ambient temperature range.

MAX22503E: Simplified Block Diagram MAX22503E: Simplified Block Diagram Enlarge+

Key Features

  • High-Speed Operation
    • Up to 100Mbps Data Rate
    • High Receiver Sensitivity
    • Wide Receiver Bandwidth
    • Symmetrical Receiver Thresholds
  • Integrated Protection Increases Robustness
    • -15V to +15V Common Mode Range
    • ±15kV ESD Protection (Human Body Model)
    • ±7kV IEC61000-4-2 Air-Gap ESD Protection
    • ±6kV IEC61000-4-2 Contact Discharge ESD Protection
    • Short-Circuit Protected Driver Outputs
  • Flexibility for Many Different Applications
    • 3V to 5.5V Supply Range
    • Low 5μA (max) Shutdown Current
    • Available in 14-Pin SOIC Package
    • -40°C to +125°C Operating Temperature Range


  • Motion Control
  • Encoder Interfaces
  • Field Bus Networks
  • Industrial Control Systems
  • Backplane Busses
Part NumberTx/RxDuplexVSUPPLY
Fault Protect.
Data Rate
ESD Protect.
Tx ENRx ENICC (Shutdn.)
Rx/Tx on BusSlew Rate LimitingOper. Temp.
typmintypSee Notes
MAX22503E 1Tx + 1RxFull3.0 to 5.51512.710000015YesYes524No-40 to +125
SOIC (N)/14
$4.14 @1k
See All RS-485/RS-422 Line Driver/Receivers (205)
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.

MAX22502EEVKIT: Evaluation Kit for the MAX22502E/MAX22503E

Quality and Environmental Data

Request Reliability Report for: MAX22503E 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX22503E IBIS Model
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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    100Mbps Full-Duplex 3V/5V RS-485/RS-422 Transceiver with High EFT Immunity

    • High-Speed Operation
    • Integrated Protection Increases Robustness
    • Flexibility for Many Different Applications