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ISOW3086

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12Mbps, full-duplex, isolated RS-485 and RS-422 transceiver with integrated power

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Data sheet

ISOW3086

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Data sheet Order now

Product details

Rating Catalog Isolation rating Reinforced Data rate (max) (Mbps) 12 Working isolation voltage (VIOWM) (Vrms) 1061 Surge isolation voltage (VIOSM) (VPK) 10000 Transient isolation voltage (VIOTM) (VPK) 7071 Withstand isolation voltage (VISO) (Vrms) 5000 CMTI (min) (kV/µs) 100 Operating temperature range (°C) -55 to 125 Type RS-485
Rating Catalog Isolation rating Reinforced Data rate (max) (Mbps) 12 Working isolation voltage (VIOWM) (Vrms) 1061 Surge isolation voltage (VIOSM) (VPK) 10000 Transient isolation voltage (VIOTM) (VPK) 7071 Withstand isolation voltage (VISO) (Vrms) 5000 CMTI (min) (kV/µs) 100 Operating temperature range (°C) -55 to 125 Type RS-485
SO-MOD (DWE) 16 106.09 mm² 10.3 x 10.3
  • Data rates
    • ISOW3080 and ISOW3080P : 500kbps
    • ISOW3086 and ISOW3086P : 12Mbps
  • Integrated best in class emissions DC-DC converter
    • Meets CISPR 32 Class B with margin on a two-layer PCB
  • High efficiency output power
    • Typical efficiency: 41.5%
    • VISOOUT accuracy: ±10%
  • Independent power supply for RS-485 and DC-DC
    • Logic supply (VDDL): 2.25V to 5.5V
    • Power converter supply ( VDD): 3V to 5.5V
  • RS485 compatibility on ISOW3080 and ISOW3086 with 3.3V VISOOUT.
  • PROFIBUS compatibility on ISOW3080P and ISOW3086P with 5V VISOOUT.

  • High-performance with integrated protection

    • Open, short, and idle bus failsafe
    • 1/8 unit load: up to 256 nodes on bus
    • Glitch-free power up and power down
  • Reinforced and Basic isolation options
  • High ESD bus protection
    • HBM: ±16kV
    • IEC 61000-4-2 contact discharge: ±8kV
  • Operating temperature range: -55°C to 125°C
  • Current limit and thermal shutdown
  • 16-pin wide SOIC package
  • Safety Related Certifications:
    • DIN EN IEC 60747-17 (VDE 0884-17)
    • UL 1577 component recognition program
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications
  • Data rates
    • ISOW3080 and ISOW3080P : 500kbps
    • ISOW3086 and ISOW3086P : 12Mbps
  • Integrated best in class emissions DC-DC converter
    • Meets CISPR 32 Class B with margin on a two-layer PCB
  • High efficiency output power
    • Typical efficiency: 41.5%
    • VISOOUT accuracy: ±10%
  • Independent power supply for RS-485 and DC-DC
    • Logic supply (VDDL): 2.25V to 5.5V
    • Power converter supply ( VDD): 3V to 5.5V
  • RS485 compatibility on ISOW3080 and ISOW3086 with 3.3V VISOOUT.
  • PROFIBUS compatibility on ISOW3080P and ISOW3086P with 5V VISOOUT.

  • High-performance with integrated protection

    • Open, short, and idle bus failsafe
    • 1/8 unit load: up to 256 nodes on bus
    • Glitch-free power up and power down
  • Reinforced and Basic isolation options
  • High ESD bus protection
    • HBM: ±16kV
    • IEC 61000-4-2 contact discharge: ±8kV
  • Operating temperature range: -55°C to 125°C
  • Current limit and thermal shutdown
  • 16-pin wide SOIC package
  • Safety Related Certifications:
    • DIN EN IEC 60747-17 (VDE 0884-17)
    • UL 1577 component recognition program
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications

The ISOW308x devices are isolated RS-485/RS-422 transceivers with a built-in isolated DC-DC converter, that eliminates the need for a separate isolated power supply in space constrained isolated designs. The low-emissions, isolated DC-DC converter meets CISPR 32 radiated emissions Class B standard on a simple two-layer PCB.

Two options of data rates are provided: ISOW3080 is optimized for maximum 500kbps and ISOW3086 is designed for maximum 12Mbps data rate. These devices do not require any external components other than supply decoupling capacitors to realize an isolated RS-485 port, best for long distance communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. Both signal and power paths are 5kVRMS isolated per UL1577 and are qualified for reinforced and basic isolation per VDE, TUV and CQC. The bus pins of these devices can endure up to 16kV of HBM stress.

The ISOW308x can operate from a single supply voltage of 3V to 5.5V by connecting VDDL and VDD together on PCB. If lower logic levels are required, 2.25V to 5.5V logic supply (VDDL) can be separated and independent from the power converter supply (VDD) of 3V to 5.5V. These devices support a wide operating ambient temperature range from –55°C to +125°C and are available in 16-pin DWE (SOIC-16 footprint compatible package) offering a minimum of 8mm creepage and clearance.

The ISOW308x devices are isolated RS-485/RS-422 transceivers with a built-in isolated DC-DC converter, that eliminates the need for a separate isolated power supply in space constrained isolated designs. The low-emissions, isolated DC-DC converter meets CISPR 32 radiated emissions Class B standard on a simple two-layer PCB.

Two options of data rates are provided: ISOW3080 is optimized for maximum 500kbps and ISOW3086 is designed for maximum 12Mbps data rate. These devices do not require any external components other than supply decoupling capacitors to realize an isolated RS-485 port, best for long distance communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. Both signal and power paths are 5kVRMS isolated per UL1577 and are qualified for reinforced and basic isolation per VDE, TUV and CQC. The bus pins of these devices can endure up to 16kV of HBM stress.

The ISOW308x can operate from a single supply voltage of 3V to 5.5V by connecting VDDL and VDD together on PCB. If lower logic levels are required, 2.25V to 5.5V logic supply (VDDL) can be separated and independent from the power converter supply (VDD) of 3V to 5.5V. These devices support a wide operating ambient temperature range from –55°C to +125°C and are available in 16-pin DWE (SOIC-16 footprint compatible package) offering a minimum of 8mm creepage and clearance.
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* Data sheet ISOW308x Robust-EMC, Isolated RS-485/RS-422 Transceiver With Integrated DC-DC Converter datasheet (Rev. A) PDF | HTML 04 Mar 2026

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