Analog Devices Inc. ADM2795E Transceivers

Analog Devices Inc. ADM2795E Transceivers are 5kVrms signal-isolated RS-485 transceivers. The transceivers provide up to ±42V of AC/DC peak bus overvoltage fault protection on the RS-485 bus pins. Developed using iCoupler® technology, the transceivers combine a 3-channel isolator, RS-485 transceiver, and IEC electromagnetic compatibility (EMC) transient protection into a single package.

These Analog Devices RS-485/RS-422 transceivers offer IEC 61000-4-5 Level 4 surge protection, which enables up to ±4kV protection on the RS-485 bus pins. ADM2795E has IEC 61000-4-4 Level 4 EFT protection up to ±2kV and IEC 61000-4-2 Level 4 ESD protection on the bus pins. This protection allows the ADM2795E Transceivers to withstand up to ±15kV on the transceiver interface pins without latching up.

ADM2795E's extended common-mode input range of ±25V improves data communication reliability in noisy environments. The ADM2795E Transceivers operate over wide power supply ranges, using a 1.7V to 5.5V VDD1 power supply range. This allows the transceivers to interface to low-voltage logic supplies. When operating over a 3V to 5.5V VDD2 power supply, the ADM2795E transceivers are fully TIA/EIA RS-485/RS-422 compliant.


  • 5kVrms isolated RS-485/RS-422 transceiver
  • ±42V AC/DC peak fault protection on RS-485 bus pins
  • Certified Level 4 EMC protection on RS-485 A, B bus pins
    • IEC 61000-4-5 surge protection (±4kV)
    • IEC 61000-4-4 electrical fast transient (EFT) protection (±2kV)
    • IEC 61000-4-2 electrostatic discharge (ESD) protection
      • ±8kV contact discharge
      • ±15kV air discharge
    • IEC 61000-4-6 conducted radio frequency (RF) immunity (10V/mrms)
  • Certified IEC 61000-4-x immunity across isolation barrier
  • IEC 61000-4-2 ESD, IEC 61000-4-4 EFT, IEC 61000-4-5 surge, IEC 61000-4-6 conducted RF immunity, IEC 61000-4-3 radiated immunity, IEC 61000-4-8 magnetic immunity
  • RS-485 A, B pins human body model (HBM) ESD protection: >±30kV
  • −25V to +25V common-mode input range
  • >75kV/μs common-mode transient immunity
  • Robust noise immunity (tested to the IEC 62132-4 standard)
  • Passes EN55022 Class B radiated emissions by 6dBμV/m margin
  • Receiver short-circuit, open-circuit, and floating input fail-safe
  • Supports 256 bus nodes (96kΩ receiver input impedance)
  • −40°C to +125°C temperature option
  • Glitch free power-up/power-down (hot swap)
  • Safety and regulatory approvals (pending)
    • CSA Component Acceptance Notice 5A, DIN V VDE V 0884-10, UL 1577, CQC11-471543-2012
    • TIA/EIA RS-485/RS-422 compliant over full supply range
    • 3V to 5.5V operating voltage range on VDD2
    • 1.7V to 5.5V operating voltage range on VDD1 logic supply


  • Heating, ventilation, and air conditioning (HVAC) networks
  • Industrial field buses
  • Building automation
  • Utility networks


Functional Block Diagram

Block Diagram - Analog Devices Inc. ADM2795E Transceivers
Publicado: 2017-04-20 | Atualizado: 2022-03-11