text.skipToContent text.skipToNavigation
warning This page may load slowly on Internet Explorer. Content on this page may load slowly on Internet Explorer. For a faster experience, please view in Chrome or Firefox.


Hot-swappable, robust-EMC bidirectional I2C isolator with unidirectional clock

US ECCN: EAR99 US/Local Export Classification Number

Quality information

Lead finish / Ball material Call TI
MSL rating / Peak reflow Call TI
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
View or download

Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
SOIC (D) | 8 3,000 | LARGE T&R -40 to 125
Package | Pins SOIC (D) | 8
Package qty | Carrier: 3,000 | LARGE T&R
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the ISO1640-Q1

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • VDA320 Compliant
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 3A
    • Device CDM ESD Classification Level C6
  • Isolated Bidirectional, I2C Compatible, Communication
    • ISO1640-Q1: Bidirectional SDA and SCL
  • Supports up to 1.7 MHz Operation
  • Robust isolation barrier:
    • >100-year projected lifetime at 500 VRMS working voltage
    • Up to 3000 VRMS isolation rating
    • Up to 5 kV surge capability
    • ±100 kV/µs typical CMTI
  • 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
  • ±8 kV IEC-ESD 61000-4-2 contact discharge protection across isolation barrier
  • 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

Description for the ISO1640-Q1

The ISO1640-Q1 (ISO164x-Q1) 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 VRMS 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-Q1 has two isolated bidirectional channels for clock and data lines. ISO1640-Q1 integrates logic required to support bidirectional channels, providing a much simpler design and smaller footprint when compared to optocoupler-based solutions.


Qty Price (USD)
1-99 3.41
100-249 2.988
250-999 2.095
1,000+ 1.688