ISO1640

• Reliable Isolated Bidirectional, I²C Compatible, Communication
  • ISO1640: Fully Bidirectional Isolated SDA and SCL Communication
  • SDA and SCL Hot Swappable
• Bidirectional data transfer up to 1.7 MHz Operation
• Robust isolation barrier with enhanced EMC:
  • >100-year projected lifetime at 500 V_RMS working voltage
  • Up to 3000 V_RMS isolation rating
  • Up to 5 kV surge capability
  • ±100 kV/µs typical CMTI
  • ±8 kV IEC-ESD 61000-4-2 contact discharge protection across isolation barrier
  • Same side ±8 kV IEC-ESD unpowered contact discharge on SCL2 and SDA2 (Side 2)
• Supply range: 3 V to 5.5 V (Side 1) and 2.25 V to 5.5 V (Side 2)
• Open-Drain Outputs With 3.5-mA (Side 1) and 50-mA (Side 2) Sink Current Capability
• Max capacitive load: 80 pF (Side 1) and 400 pF (Side 2)
• 8-SOIC (D-8) Package Options
• –40°C to +125°C Operating Temperature
• Safety-Related Certifications (planned):
  • UL 1577 Component Recognition Program
  • DIN V VDE V 0884-11
  • IEC 60950-1, IEC62368-1, IEC 61010-1, IEC 60601-1 and GB4943.1-2011 certifications

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The ISO1640 (ISO164x) device is a hot swappable, low-power, bidirectional isolator that is compatible with I²C interfaces. This digital isolator supports UL 1577 isolation ratings of 3000 V_RMS in the 8-D package. Each isolation channel in this low emissions device has a logic input and open drain output separated by a double capacitive silicon dioxide (SiO₂) insulation barrier. This family includes devices certified by VDE, UL, CSA, TUV and CQC. The ISO1640 has two isolated bidirectional channels for clock and data lines. ISO1640 integrates logic required to support bidirectional channels, providing a much simpler design and smaller footprint when compared to optocoupler-based solutions.