MAX14946EWE+

Drivers, Receivers, Transceivers Overview

The MAX14946EWE+ is a half-duplex RS-485/RS-422 transceiver featuring 2750V RMS galvanic isolation between the UART and cable sides. It supports data rates up to 500kbps with an integrated 450kHz transformer driver for power transfer across the isolation barrier. The device includes an internal LDO providing a typical 5V output on VDDB, powered by VLDO (4.68V to 14V). Logic-side supply VDDA operates from 3.0V to 5.5V. It offers ±30kV ESD protection on A/B pins, true fail-safe receiver outputs, and thermal shutdown at +160°C. Available in a 16-pin Wide SOIC package, it operates over -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated transformer driver enables efficient power transfer across the isolation barrier using an external center-tapped transformer.
• Built-in low-dropout regulator simplifies design by providing isolated cable-side power without external components.
• High robustness provided by ±30kV HBM ESD protection on bus terminals and withstands ±10kV surge per IEC 61000-4-5.
• True fail-safe circuitry ensures a logic-high receiver output when inputs are open or shorted.

Drivers, Receivers, Transceivers Applications

• Industrial Automation Equipment
• Programmable Logic Controllers
• HVAC Systems
• Power Meters

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements for your region. Confirm that the Wide SOIC-16 package dimensions align with your PCB footprint constraints before finalizing procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component when high-voltage isolation is required between control logic and industrial bus networks. The integrated transformer driver eliminates the need for separate isolated DC-DC converters, reducing board space. Ensure the external transformer selected meets the minimum ET product requirement of 7.9Vµs to prevent saturation under worst-case voltage conditions.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX1494x family of isolated RS-485/RS-422 transceivers. It shares functional similarities with the MAX14945 but differs in specific pin configurations or feature sets. It complements non-isolated interface solutions by providing safety certification for applications requiring reinforced insulation barriers.

Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the verified source material. Designers should consult Analog Devices for current alternative recommendations within the isolated transceiver portfolio.