Transceivers are first to meet IEC surge standards

Believed to be the industry’s first RS-485 transceivers fully certified for Level 4 EMC surge protection, the ADM2795E and ADM3095E eliminate the need for external transient-voltage surge-suppression devices, says Analog Devices.

The galvanically isolated ADM2795E and the non-isolated ADM3095E save space and component count, speed time to market, and minimise regulatory compliance issues, explains the company. The integrated fault protection offered by the devices prevents potentially destructive voltages from damaging the communication interface, which can result from failures, surges, ESD and wiring errors.

Designers using the RS-485 transceivers do not need to individually design, test, verify, and formally obtain regulatory certification of an implementation, as these components have the required approval. No external protective components are needed, which eliminates the need to match these discrete devices to specific RS-485 transceivers. This also yields a simplified BoM and smaller-board space footprint for a higher density of RS-485 ports.

The ADM2795E and ADM3095E RS-485 transceivers meet IEC61000-4-5 Level 4 surge protection requirements, as well as industrial IEC immunity standards (radiated, conducted, and magnetic immunity) and EMC protection against ESD, electrical fast transient (EFT), and surge. Both devices are TIA/EIA RS-485/RS-422 compliant over their full supply range of 3.0 to 5.5V.

Evaluation boards, IBIS models, safety and regulatory compliance certificates, and videos and application notes are also available to simplify the design-in process.

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