Full-duplex RS-485 transceiver for 3.3V industrial buses
The 50 mV of receiver hysteresis provides built-in noise margin on long or electrically noisy cable runs, typical in factory automation, building control, and instrumentation backplanes.
At 5 Mbps the SN65HVD34DR can sustain a 200-meter cable run with proper termination, though practical reach shortens as the baud rate climbs. The full-duplex capability means separate pairs for transmit and receive, eliminating the bus-turnaround dead time that half-duplex parts incur.
No LTB window to track, no forced redesign for a replacement.