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


Qty Price (USD)
1-99 3.68
100-249 3.0
250-999 2.358
1,000+ 2.0

Quality information

Lead finish / Ball material
MSL rating / Peak reflow -
Quality, reliability
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Information included:

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

  • US ECCN: EAR99

Packaging information

Package | Pins SOIC (DW) | 16
Package qty | Carrier: 2,000 | LARGE T&R
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the ISO1640

  • Robust Isolated Bidirectional, I2C Compatible, Communication
    • ISO1640: Bidirectional SDA and SCL communication
    • ISO1641: Bidirectional SDA and unidirectional SCL communication
    • ISO1642/3/4: Bidirectional SDA and SCL communication with either 2 or 3 unidirectional GPIO channels
    • Hot-Swappable SDA and SCL
  • Bidirectional data transfer up to 1.7 MHz Operation
  • Up to 3 additional unidirectional isolated GPIO channels supporting 50 Mbps speed
  • 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 for the ISO1640

The ISO1640, ISO1641, ISO1642, ISO1643 and ISO1644 (ISO164x) device s are hot swappable, low-power, bidirectional isolator s that are 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. The ISO1642 and ISO1643 intregrates 2 unidirectional CMOS isolation channels, while the ISO1644 intregrates 3 unidirectional CMOS isolation channels which can be used for static GPIO isolation or to isolate a Serial Peripheral Interface (SPI) bus. This family includes basic and reinforced insulation devices certified by VDE, UL, CSA, TUV and CQC. The ISO1640/2/3/4 have two isolated bidirectional channels for clock and data lines and the ISO1641 has a bidirectional data and a unidirectional clock channel. The ISO164x family 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 3.68
100-249 3.0
250-999 2.358
1,000+ 2.0

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships  tube or tray  devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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