ADM3075EARZ

Drivers, Receivers, Transceivers Overview

The ADM3075EARZ is a half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices. It operates on a single 3.3 V supply and supports data rates up to 500 kbps with slew-rate-limited drivers to minimize EMI. The device features ±15 kV ESD protection on the bus pins, true fail-safe receiver inputs, and hot-swap capability on the DE and RE pins. It accommodates up to 256 nodes on the bus due to its 1/8-unit load receiver input impedance. Operating temperatures range from -40°C to +125°C for the Y suffix variant.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate-limited driver outputs reduce electromagnetic interference and reflections caused by improperly terminated cables.
• True fail-safe receiver inputs guarantee a logic-high output when inputs are open or shorted without external bias resistors.
• Hot-swap input structure prevents false transitions on the bus during power-up or hot insertion.

Drivers, Receivers, Transceivers Applications

• Power and energy metering systems
• Industrial control networks
• Lighting systems
• Telecommunications equipment
• Security systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package suffix against the ordering guide to ensure correct thermal rating and pin configuration. Confirm that the selected variant matches the required duplex mode and data rate specifications for the target application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring half-duplex communication at speeds up to 500 kbps. Ensure the design accounts for the 1/8-unit load specification to support high node counts. Verify that the operating temperature range aligns with the industrial requirements of the deployment site.

Drivers, Receivers, Transceivers Part Context

This part belongs to the ADM307xE family of 3.3 V, low-power data transceivers designed for multipoint bus transmission lines. The series includes variants supporting different data rates and duplex modes, all sharing common ESD protection and fail-safe features compliant with TIA/EIA standards.

Drivers, Receivers, Transceivers Replacement Considerations

ADM3075EAPD is a direct replacement offering the same electrical characteristics in an SOIC-8 package.

Drivers, Receivers, Transceivers FAQ

What is the differential input threshold voltage range for the fail-safe feature?

The receiver inputs have a differential input threshold voltage ranging from -50 mV to -200 mV, ensuring a logic-high output when inputs are open or shorted.

How does the device handle bus contention or output shorting?

Thermal shutdown circuitry protects the drivers against excessive power dissipation caused by bus contention or output shorting, placing outputs into a high-impedance state if necessary.

What is the maximum number of transceivers supported on a single bus?

The 1/8-unit load receiver input impedance allows up to 256 transceivers to be connected on the bus simultaneously.