You are currently viewing Isolated RS-485 Transceivers with Integrated DC/DC Converter

Isolated RS-485 Transceivers with Integrated DC/DC Converter

Isolated RS-485 Transceivers with Integrated DC/DC Converter

The CA-IS2092A family of devices is galvanically-isolated RS-485 transceivers with built-in isolated DC-DC converter, that eliminates the need for a separate isolated power supply in space constrained isolated designs. The transceivers have the logic input and output buffers separated by a silicon oxide (SiO2) insulation barrier that provides up to 2.5kVRMS (60s) of galvanic isolation and ±150kV/μs typical CMTI Isolation improves data communication by breaking ground loops and reduces noise where there are large differences in ground potential between ports. An integrated DC-DC converter generates the 3.3V or 5V operating voltage for the cable-side.

Main Features

  • High-Performance and Compliant with RS-485 EIA/TIA-485 Standard
  • Data rate up to 0.5Mbps
  • 1/8 unit load enables up to 256 nodes on the bus
  • DC-DC supply voltage range(VDDP) 3.0V to 5.5V
  • RS-485 supply input(VDDL)2.5V to 5.5V
  • Integrated DC-DC Converter for Cable-side Power:
    – 3.3V and 5V output options
    – High integration with internal transformer
    – Soft-start reduces input inrush current
    – Overload and short-circuit protection
    – Thermal shutdown
  • Robust Galvanic Isolation of Digital Signals:
    – 2.5kVRMS withstand isolation voltage for 60s (galvanic isolation)
    – CMTI：±150kV/μs
    – High lifetime：>40 years
  • Integrated Protection for Robust Communication:
    – ±8kV Human Body Model(HBM) ESD protection on bus I/O
    – True fail-safe guarantees known receiver output state
    – Driver current limit and thermal shutdown
  • Wide operating temperature range: –40°C to 125°C
  • Package: LGA16
  • Safety Regulatory Approvals(pending):
    – 3535VPK VIOTM and 566VPK VIORM per DIN VDE V0884-11:2017-01
    – 2.5kVRMS isolation for 1 minute per UL 1577