Robust-EMC bidirectional I2C digital isolator
Product details
Parameters
Package | Pins | Size
Features
- 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 VRMS working voltage
- Up to 3000 VRMS 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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Description
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 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 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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | ISO164x Hot-Swappable Bidirectional I2C Isolators with Enhanced EMC datasheet (Rev. A) | Dec. 09, 2020 |
User guide | ISO1640DEVM Evaluation Module Users Guide | Sep. 25, 2020 | |
More literature | ISO1640DEVM EU Declaration of Conformity (DoC) | Sep. 02, 2020 | |
Technical articles | Top 6 design questions about I2C isolators | Mar. 13, 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Isolated, bidirectional, I2C-compatible communication
- For evaluation of ISO1640 and ISO1641 devices in D and DW packages
- Supply voltage and level translation range: 3 V to 5.5 V on side 1 and 2.25 V to 5.5 V on side 2
- Test points and headers for standalone evaluation or evaluation with larger systems
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Design tools & simulation
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (D) | 8 | View options |
Ordering & quality
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- Qualification summary
- Ongoing reliability monitoring
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