Low-emissions, low-ripple, quad-channel, 3/1, reinforced digital isolator with integrated power


Product details


Type Digital isolator Data rate (Max) (Mbps) 100 Isolation rating (Vrms) 5000 Surge voltage capability (Vpk) 10000 Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Signal isolators with integrated power


  • 100 Mbps data rate
  • Integrated DC-DC converter with low-emissions, low-noise

    • Emission optimized to meet CISPR 32 limits
    • Low frequency power converter at 25 MHz enabling low noise performance

    • Low output ripple: 24 mV

  • High efficiency output power

    • Efficiency at max load: 45%
    • Up to 0.5-W output power
    • Visoout accuracy of 5%
    • 5 V to 5 V: Available load current ≥ 110 mA
    • 5 V to 3.3 V: Available load current ≥ 110 mA
    • 3.3 V to 3.3 V: Available load current ≥ 60 mA
  • Independent power supply for channel isolator & power converter

    • Logic supply (VIO): 1.71-V to 5.5-V
    • Power converter supply (VDD): 3-V to 5.5-V
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
  • Reinforced isolation barrier:
    • >100-year projected lifetime at 1 kVRMS working voltage
    • Up to 5000 VRMS isolation rating
    • Up to 10 kVPK surge capability
    • ±100 kV/µs typical CMTI
  • Section 7.7 (pending):
    • VDE reinforced insulation per DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program

    • IEC 60950-1, IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications

  • Extended temperature range: –40°C to +125°C
  • 20-pin wide SOIC package

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The ISOW7741 device is a galvanically-isolated quad-channel digital isolator with an integrated high-efficiency power converter with low emissions. The integrated DC-DC converter provides up to 500 mW of isolated power, eliminating the need for a separate isolated power supply in space-constrained isolated designs.

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Technical documentation

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Type Title Date
* Data sheet ISOW7741 Data Sheet datasheet Sep. 09, 2020
Certificate CSA Certification (Rev. Q) Jun. 14, 2021
Certificate VDE certificate for reinforced isolation for DIN VDE V 0884-11:2017-01 (Rev. O) Jun. 14, 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen Jun. 11, 2021
Technical article 4 common questions when isolating signal and power Jun. 01, 2021
Application note How to Meet CISPR 32 Radiated Emissions Limits With ISOW7741 May 28, 2021
Application note How to Isolate Signal and Power for I2C (Rev. B) May 19, 2021
Application note ISOW7741 Second Generation Isolated DC-DC Converter Mar. 17, 2021
Certificate UL Certification (Rev. O) Feb. 03, 2021
Certificate ISOW7741DFMEVM EU RoHS Declaration of Conformity (DoC) Nov. 23, 2020
User guide ISOW774x Quad-Channel Digital Isolator with Integrated DC-DC Converter EVM Nov. 04, 2020

Design & development

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Hardware development

document-generic User guide

ISOW7741DFMEVM is an evaluaiton module used to evaluate the quad channel high-performance, 5000-VRMS reinforced quad-channel digital Isolators with integrated high-efficiency, and low-emissions DC-DC converter ISOW774x in a 20-Pin WB SOIC package (Package Code-DFM). The EVM features enough test (...)

  • High-Performance, 5000-VRMS reinforced quad-channel aigital Isolators with integrated high-efficiency, low-emissions DC-DC converter
  • Separate IO and DC/DC supply inputs
  • Wide supply and level translation Range for IO: 1.71 V to 5.5 V
  • High signaling rate: up to 100 Mbps
  • Isolation barrier life > 40 Years

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Ordering & quality

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