The SN65HVD75DR from Texas Instruments is a high-speed 3.3V RS-485/RS-422 transceiver rated for 20 Mbps, with IEC-ESD protection on the bus pins — a far faster and more hardened part than the typical 2.5 Mbps RS-485 workhorse. Running from a 3V to 3.6V supply in the standard 8-SOIC, it provides a 1/1 driver/receiver in half-duplex operation with a robust 80 mV receiver hysteresis, and is specified over -40°C to +125°C. The 20 Mbps rate is the headline: where classic RS-485 parts are limited to a few Mbps, this device pushes differential signaling fast enough for high-throughput fieldbus segments, motion-controller feedback, and multi-node data links that still need the noise immunity and long-reach characteristics of RS-485. The integrated IEC ESD protection means the bus pins can absorb real electrostatic discharge on connectors and field wiring without external clamp components in many designs.
Use the SN65HVD75DR where data rate and robustness meet: high-speed industrial backplanes, servo and drive communications, remote I/O concentrators, and building-automation trunk links. Because it is a 3.3V-only part, plan the transceiver supply from the 3.3V rail, and remember that at 20 Mbps the cable should be short and properly terminated — RS-485 edge speed and cable length trade against each other. The -40°C to +125°C rating also suits hot industrial enclosures. For a fast, ESD-hardened 3.3V RS-485 interface that handles both high throughput and harsh industrial conditions, the SN65HVD75DR is a strong choice backed by the TI HVD family's long-term availability.