The RAA788170 3V full-duplex powered RS-485/422 transceiver features a high output drive and high EFT and ESD protection. The device is immune to ±3kV IEC 61000-4-4 EFT transients and can withstand up to ±10kV IEC 61000-4-2 ESD strikes without latch-up.

The RAA78817x family includes half and full-duplex transceivers with active-high driver-enable pins and active-low receiver-enable pins. These transceivers support data rates of 250kbps, 500kbps, and 20Mbps with a performance that is characterized from -40 °C to +85 °C.


  • IEC61000 ESD protection on RS-485 I/O pins: ±16.5kV
  • Class 3 ESD level on all other pins: >7kV HBM
  • ±3kV EFT immunity of bus I/O pins
  • Full fail-safe (open, short, terminated/floating) receivers
  • Hot plug - Tx and Rx outputs remain three-state during power-up
  • True 1/8 unit load allows up to 256 devices on the bus
  • Single 3.3V supply
  • High data rates: up to 250 Kbps
  • Low quiescent supply current: 800μA (Max)
  • Ultra-low shutdown supply current: 10nA
  • -7V to +12V common-mode input/output voltage range
  • Half and full duplex pinouts
  • Current limiting and thermal shutdown for driver overload protection
  • Tiny MSOP packages consume 50% less board space
  • Pb-free (RoHS compliant)




  • Industrial networks in factory automation
  • Building automation: lighting, elevators, HVAC
  • Industrial process control networks
  • Security camera networks
  • Networks with a star topology
  • Long-haul networks in coal mines and oil rigs
  • High node-count networks
  • Automated utility e-meter reading systems


Type Title Date
Datasheet PDF 817 KB
Training PDF 762 KB
Training PDF 208 KB
Brochure PDF 2.95 MB
Training PDF 405 KB
Training PDF 239 KB
Application Note PDF 382 KB
Application Note PDF 366 KB
Technical Brief PDF 188 KB
Report PDF 438 KB
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Design & Development



RAA78815x & RAA78817x Family of RS-485/422 Transceivers with Highest EFT Immunity

Overview of the key features, advantages and target applications for the RAA78817x family of 3.3V RS-485/422 transceivers with +/-3kV EFT immunity and the RAA78815x family of 5V RS-485/422 transceivers with +/-5KV EFT immunity.