MAX14940GWE+

Drivers, Receivers, Transceivers Overview

The MAX14940GWE+ is a half-duplex isolated RS-485/PROFIBUS-DP transceiver in a 16-pin wide SOIC package. It provides 2750VRMS galvanic isolation and supports data rates up to 20Mbps. The device features an integrated transformer driver operating at 450kHz for power transfer across the isolation barrier, alongside an internal LDO capable of supplying up to 10mA. Key electrical parameters include ±35kV ESD protection on bus pins, a VDDA range of 3.0V to 5.5V, and a VDDB range of 4.5V to 5.5V. It operates within a temperature range of -40°C to +105°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated transformer driver and LDO simplify isolated DC/DC supply design
• High-performance transceiver compliant with RS-485 and PROFIBUS-DP standards
• Robust communication ensured by ±35kV ESD protection and true fail-safe circuitry

Drivers, Receivers, Transceivers Applications

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

Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the wide SOIC package requirement. Ensure compliance with RoHS directives and check for pending safety regulatory approvals such as UL1577 certification before final integration into industrial designs.

Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed isolated communication up to 20Mbps is required. The integrated power management reduces external component count compared to discrete solutions. Verify that the application environment stays within the specified -40°C to +105°C operating temperature range and that the bus topology supports the 1/4-unit load receiver capability.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX14940 family of isolated transceivers designed for robust industrial communication. It serves as a bridge between UART logic levels and differential bus lines while maintaining galvanic isolation. The wide body packaging facilitates thermal dissipation and higher creepage distances suitable for harsh electrical environments.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX14945EWE+T is a confirmed substitute offering similar functionality but limited to a 500kbps data rate. Designers requiring lower bandwidth may consider this alternative, though it lacks the 20Mbps performance of the MAX14940.