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ISO1640-Q1

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Automotive, hot-swappable, robust-EMC bidirectional I2C isolator with bidirectional clock

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Data sheet

ISO1640-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Isolation rating Basic, Reinforced Number of channels 2 Serial data Bidirectional Serial clock Bidirectional Data rate (max) (Mbps) 1.7 Working isolation voltage (VIOWM) (Vrms) 450, 1500 Surge isolation voltage (VIOSM) (VPK) 6500, 10000 Transient isolation voltage (VIOTM) (VPK) 4242, 7071 Withstand isolation voltage (VISO) (Vrms) 3000, 5000 CMTI (min) (kV/µs) 50 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.25 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
Rating Automotive Isolation rating Basic, Reinforced Number of channels 2 Serial data Bidirectional Serial clock Bidirectional Data rate (max) (Mbps) 1.7 Working isolation voltage (VIOWM) (Vrms) 450, 1500 Surge isolation voltage (VIOSM) (VPK) 6500, 10000 Transient isolation voltage (VIOTM) (VPK) 4242, 7071 Withstand isolation voltage (VISO) (Vrms) 3000, 5000 CMTI (min) (kV/µs) 50 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.25 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
SOIC (D) 8 29.4 mm² 4.9 x 6 SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • 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
  • Robust Isolated Bidirectional, I2C Compatible, Communication
    • ISO1640 -Q1: Bidirectional SDA and SCL communication
    • Hot-Swappable SDA and SCL
  • Bidirectional data transfer up to 1.7 MHz Operation
  • Robust isolation barrier with enhanced EMC:
    • >100-year projected lifetime at 450 VRMS working voltage (D-8) and 1500 VRMS working voltage (DW-16)
    • Up to 5000 VRMS isolation rating per UL1577
    • Up to 10 kV reinforced 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) current-sink capability
  • Max capacitive load: 80 pF (Side 1) and 400 pF (Side 2)
  • 16-SOIC (DW-16) and 8-SOIC (D-8) Package Options
  • –40°C to +125°C Operating Temperature
  • Safety-Related Certifications (planned):
    • UL 1577 Component Recognition Program
    • DIN VDE V 0884-11
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB4943.1-2011 certifications
  • 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
  • Robust Isolated Bidirectional, I2C Compatible, Communication
    • ISO1640 -Q1: Bidirectional SDA and SCL communication
    • Hot-Swappable SDA and SCL
  • Bidirectional data transfer up to 1.7 MHz Operation
  • Robust isolation barrier with enhanced EMC:
    • >100-year projected lifetime at 450 VRMS working voltage (D-8) and 1500 VRMS working voltage (DW-16)
    • Up to 5000 VRMS isolation rating per UL1577
    • Up to 10 kV reinforced 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) current-sink capability
  • Max capacitive load: 80 pF (Side 1) and 400 pF (Side 2)
  • 16-SOIC (DW-16) and 8-SOIC (D-8) Package Options
  • –40°C to +125°C Operating Temperature
  • Safety-Related Certifications (planned):
    • UL 1577 Component Recognition Program
    • DIN VDE V 0884-11
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB4943.1-2011 certifications

The ISO1640-Q1 (ISO164x-Q1) device is a hot swappable, low-power, bidirectional isolator that is compatible with I2C interfaces. The ISO164x supports UL 1577 isolation ratings of 5000 VRMS in the 16-DW package, and 3000 VRMS in the 8-D package. Each I2C 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 basic and reinforced insulation 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.

The ISO1640-Q1 (ISO164x-Q1) device is a hot swappable, low-power, bidirectional isolator that is compatible with I2C interfaces. The ISO164x supports UL 1577 isolation ratings of 5000 VRMS in the 16-DW package, and 3000 VRMS in the 8-D package. Each I2C 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 basic and reinforced insulation 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.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet ISO164x-Q1 Automotive, Hot-Swappable Bidirectional I2C Isolators with Enhanced EMC datasheet (Rev. A) PDF | HTML 09 Dec 2020
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. Z) 29 May 2026
Certificate TUV Certificate for Isolation Devices (Rev. M) 07 May 2026
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) 07 May 2026
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AA) 10 Mar 2026
Certificate CQC Certificate for ISOxxD (Rev. B) 19 Aug 2025
Certificate CQC Certificate for ISOxxDWx (Rev. K) 18 Aug 2025
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03 Jul 2024
Product overview Isolating I2C Signals (Rev. A) PDF | HTML 01 Sep 2023
Certificate CSA Certificate for ISO164xD 14 Mar 2023
Certificate CSA Certificate for ISO164xDW (Rev. A) 15 Feb 2023
Functional safety information ISO1640-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 07 Oct 2022
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
Application brief How to Isolate Signal and Power for I2C (Rev. B) PDF | HTML 19 May 2021

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Evaluation board

ISO1640EVM — ISO1640 and ISO1641 robust-EMC bidirectional I2C digital isolator evaluation module

ISO1640DEVM is an evaluaiton module used to help designers evaluate the ISO1640 and ISO1641 devices' performance for quick development and analysis of data transmission systems using ISO1640 and ISO1641 isolated I2C devices in 8-pin D and 16-pin DW packages.
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SOIC (D) 8 Ultra Librarian
SOIC (DW) 16 Ultra Librarian
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