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Price Comparison for MAX14946EWE+
Series Information for MAX14946EWE+ - Maxim Integrated


  • feature
    2.75kVRMS Withstand-Isolation Voltage for 60s (VISO)
  • feature
    445VRMS Maximum Working-Isolation Voltage (VIOWM)
  • feature
    500kbps (max) Data Rate
  • feature
    630VPEAK Maximum Repetitive Peak-Isolation Voltage (VIORM)
  • feature
    > 30 Years Lifetime at Rated Working Voltage
  • feature
    Compliant with RS-485 EIA/TIA-485 Standard
  • feature
    High Integration Simplifies Designs
  • feature
    High-Performance Transceiver Enables Flexible Designs
  • feature
    Integrated LDO for Cable-Side Power
  • feature
    Integrated Protection for Robust Communication
  • feature
    Integrated Transformer Driver for Power Transfer to Cable Side Has Up to 80% Efficiency at 150mA Load
  • feature
    Thermal Shutdown
  • feature
    Up to 256 Devices on the Bus
  • feature
    Withstands u00b110kV Surge per IEC 61000-4-5
  • feature
    u00b130kV ESD (HBM) on Driver Outputs/Receiver Inputs


The MAX14946 isolated RS-485/RS-422 transceiver provides 2750VRMS (60s) of galvanic isolation between the cable side (RS-485/RS-422 driver/receiver side) and the UARTside of the device. Isolation improves communication by breaking ground loops and reduces noise when there are large differences in ground potential between ports. This device allows for robust communication up to 500kbps. The device includes an integrated 450kHz transformer driver for power transfer to the cable side of the transceiver using an external transformer. An integrated LDO provides a simple and space-efficient architecture for providing power to the cable-side of the IC. The device includes one half-duplex driver/receiver channel. The receiver is 1/8-unit load, allowing up to 256 transceivers on a common bus. Integrated true fail-safe circuitry ensures a logic-high on the receiver output when inputs are shorted or open. Undervoltage lockout disables the driver when cable-side or UART-side power supplies are below functional levels. The driver outputs/receiver inputs are protected from ±30kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX14946 is available in a wide-body, 16-pin SOIC package and operates over the -40°C to +85°C temperature range.


Device Type:
IC Interface Type:
RS422 RS485
No. of Drivers:
No. of Receivers:
Supply Voltage Min:
Supply Voltage Max:
Driver Case Style:
No. of Pins:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
Automotive Qualification Standard:
RoHS Phthalates Compliant:
To Be Advised
MSL 1 - Unlimited
IC Generic Number:
No SVHC (15-Jan-2018)

Alternate Descriptions

Avnet America

Single Transmitter/Receiver RS-422/RS-485 16-Pin SOIC

Avnet America product

Avnet Europe

Single Transmitter/Receiver RS-422/RS-485 16-Pin SOIC

Avnet Europe product

Future Electronics

2.75KV Isolated 500kbps Half-Duplex RS-485 Transceiver with +/-30KV ESD and Inte