±35kV High-ESD PROFIBUS RS-485 Transceiver

Industry's Highest ESD-Protected PROFIBUS-DP Transceiver

Please check latest availability status for a specific part variant.


The MAX14770E is a half-duplex, ±35kV high ESD-protected, 20Mbps transceiver for PROFIBUS-DP and RS-485 applications. In addition, it can be used for RS-422/V.11 communications. The MAX14770E is designed to meet IEC 61158-2, TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards.

The MAX14770E is available in an 8-pin SO and an 8-pin µMAX® specified over the extended temperature range. It is also available in a tiny TDFN (3mm x 3mm) package and specified over the automotive (-40°C to +125°C) temperature range.

MAX14770E: Functional Diagram MAX14770E: Functional Diagram Enlarge+

Key Features

  • Integrated Protection Increases Robustness
    • ±35kV HBM ESD per JEDEC JS-001-2012
    • ±12kV Contact ESD per IEC 61000-4-2
    • ±15kV Air Gap ESD per IEC 61000-4-2
    • True Fail-Safe Receiver Prevents False Transitions on Receiver Input Short or Open
    • Hot Swap Eliminates False Transitions During Power-Up or Hot Insertion
    • Short-Circuit-Protected Outputs
    • Thermal Shutdown Circuitry Prevents Excessive Power Dissipation
  • Low Current Reduces Power Consumption
    • 15µA Shutdown Current
    • 2.5mA Supply Current Typical with No Load
  • Profibus Compliant with Minimum 20Mbps Data Rate
  • Allows Up to 128 Transceivers on the Bus
  • -40°C to +125°C Automotive Temperature Range in Tiny 8-Pin (3mm x 3mm) TDFN


  • Industrial Fieldbuses
  • Machine Encoders
  • Motion Controllers
  • PROFIBUS-DP Networks
  • RS-485 Networks
Part NumberTx/RxDuplexVSUPPLY
Data Rate
ESD Protect.
Tx ENRx ENICC (Shutdn.)
Rx/Tx on BusSlew Rate LimitingOper. Temp.
typmintypSee Notes
MAX14770E 1Tx + 1RxHalf52.52000035YesYes15128No-40 to +125
SOIC (N)/8
$1.84 @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.

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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