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ISO1640-Q1
  • ISO1640-Q1
  • ISO1640-Q1
  • ISO1640-Q1

ISO1640-Q1

ACTIVE

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

Texas Instruments ISO1640-Q1 Product Info

1 April 2026 1

Parameters

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

Package

SOIC (D)-8-29.4 mm² 4.9 x 6

Features

  • 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

Description

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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