Full-Duplex, ±35kV ESD-Protected, RS-485 Transceivers for High-Speed Communication

Reduce Field Failures with Highest ESD Dual Voltage Full Duplex RS-485 Transceivers

Please check latest availability status for a specific part variant.


The MAX14784E/MAX14786E/MAX14787E/MAX14789E full-duplex RS-485 transceivers are designed for robust communication in harsh industrial environments. All devices feature ±35kV ESD protection on the RS-485 pins and operate from a 3V to 5.5V supply with a 4mA no-load supply current (max).

The MAX14784E/MAX14787E are optimized for communication over very long cables or short unterminated cables.

The MAX14784E/MAX14786E are available in a 14-pin SO package and and operate over the -40°C to +125°C temperature range. The MAX14786E is also available in a 14-pin TSSOP package.

The MAX14787E/MAX14789E are optimized for space-constrained applications and are available in an 8-pin SO package and operate over the -40°C to +105°C temperature range. 
MAX14784E, MAX14786E, MAX14787E, MAX14789E: Functional Diagram MAX14784E, MAX14786E, MAX14787E, MAX14789E: Functional Diagram Enlarge+

Key Features

  • Flexibility
    • Use in Full-Duplex or Half-Duplex Applications
    • Wide 3.0V to 5.5V Supply Voltage Range
    • Available with 500kbps and 25Mbps Speed Options
    • Available in 8-Pin and 14-Pin SO and TSSOP Packages
  • Optimized for Performance in Harsh Industrial Environments
    • ±35kV ESD (HBM) Protection on RS-485 I/O Ports
    • Extended Operating Temperature Range
    • Slew-Rate Limited Outputs (MAX14784E/MAX14787E)
    • Integrated Receiver Deglitch Filter Increases Noise Immunity (MAX14784E/MAX14787E/)
    • Short-Circuit Protected Outputs
    • True Fail-Safe Receiver
    • Thermal Shutdown
  • ¼-Unit Load Allows up to 128 Transceivers on the Bus


  • Encoder Interfaces
  • HVAC Control Systems
  • Motion Controllers
  • 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
MAX14789E 1Tx + 1RxFull3.0 to 5.51.92500035YesYes5128Open or Shorted--40 to +105
SOIC (N)/8
$2.59 @1k
MAX14784E 500YesYesYes-40 to +125
SOIC (N)/14
$2.80 @1k
MAX14786E 25000YesYes--40 to +125
SOIC (N)/14
$2.80 @1k
MAX14787E 500NoNo--40 to +125
SOIC (N)/8
$2.59 @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.

Quality and Environmental Data

Product Reliability Reports: MAX14784E.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX14784E 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.

    Quality Management System >
    Environmental Management System >


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