Exar – XR33032/35/38: 18V Tolerant RS-485/RS-422 Transceivers


XR33032/35/38: 18V Tolerant RS-485/RS-422 Transceivers
The XR33032/35/38 family of high performance half duplex RS-485 transceivers are optimized to operate over a wide range of supply voltage from +2.8V to +5.5V. They support 250kbps, 1Mbps, and 10Mbps data rates and are fully compliant to the TIA/EIA-485 and TIA/EIA-422 standards when operated above 3.0V. The analog bus pins are protected against severe ESD events exceeding IEC level 4 (+/-15kV IEC 61000-4-2 Air Gap Discharge, +/-8kV IEC 61000-4-2 Contact Discharge, +/-15kV Human Body Model), and can tolerate direct shorts to DC or AC voltages as high as +/-18V.


  • ±70V transient protection
  • ±18V fault tolerance on analog bus pins
  • 300μA idle current, 40nA shutdown current
  • Hot-swap glitch protection on DE and RE pins
  • Industry standard 8 NSOIC half duplex package
  • 1/8th unit load allows up to 256 devices on bus
  • +2.8V to +5.5V operating range
  • Robust electrostatic discharge (ESD) protection
  • Enhanced receiver fail-safe protection for open, shorted, or terminated but idle data lines
  • Driver short circuit current limit and thermal shutdown for overload protection
  • 1k MSRP: $1.65 US