Full-duplex RS-485/RS-422 transceiver for 3.3 V industrial links
The Texas Instruments SN65HVD33DRG4 is a full-duplex RS-485/RS-422 transceiver in a 14-SOIC package, supporting data rates up to 23 Mbps over a single differential pair.
The 23 Mbps data rate is well above the typical 250 kbps or 1 Mbps of many RS-485 transceivers. At this speed, the differential output transitions fast enough to support high-throughput protocols like Profibus or Modbus over short cable runs. The 3.3 V supply keeps the part compatible with modern MCUs and FPGAs that have migrated away from 5 V I/O. Receiver hysteresis of 50 mV provides a clean logic output on a bus with up to several hundred millivolts of common-mode noise, reducing the risk of bit errors on long or poorly terminated cables.