+5.0V, ±30kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceiver

RS-485 Transceiver with High ±30kV ESD Protection for Robust System Performance

Please check latest availability status for a specific part variant.


The MAX14780E is a +5V, ±30kV HBM ESD half duplex RS-485/422 transceiver.

The MAX14780E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 500kbps.

The MAX14780E is available in an 8-pin SO and PDIP packages operating over a temperature range from -40°C to +85°C.

MAX14780E: Typical Operating Circuit MAX14780E: Typical Operating Circuit Enlarge+

Key Features

  • Integrated Protection Increases Robustness
    • ±30kV 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 Low Current Reduces Power Consumption
  • Low Current Reduces Power Consumption
    • 10µA Shutdown Current
    • 1.2mA of Supply Current When Unloaded


  • Industrial Control
  • Instrumentation
  • Lighting Systems
  • Security Systems
  • Telecom
  • Utility Meters
Part NumberTx/RxDuplexVSUPPLY
Data Rate
ESD Protect.
Tx ENRx ENICC (Shutdn.)
Rx/Tx on BusRx Failsafe w/ InputsSlew Rate LimitingOper. Temp.
typmintypSee Notes
MAX14780E 1Tx + 1RxHalf51.250030YesYes2.8256Open or ShortedYes
-40 to +85
-40 to +125
0 to +70
SOIC (N)/8
$1.66 @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.

Technical Documents

Tutorial 6387 RS-485: Still the Most Robust Communication

Quality and Environmental Data

Product Reliability Reports: MAX14780E.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX14780EEPA+
  • MAX14780EESA+
  • MAX14780EESA+T
  • 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.

    Quality Management System >
    Environmental Management System >


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