Texas Instruments ISO164x/ISO164x-Q1 Digital Isolators
Texas Instruments ISO164x/ISO164x-Q1 Bi-Directional I2C Digital Isolators are hot-swappable, low-power, bidirectional isolators compatible with I2C interfaces. This digital isolator supports UL 1577 isolation ratings of 3000VRMS 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 Texas Instruments ISO164x/ISO164x-Q1 has two isolated bidirectional channels for clock and data lines. ISO164x/ISO164x-Q1 integrates logic required to support bidirectional channels, providing a much simpler design and smaller footprint when compared to optocoupler-based solutions. The ISO164x-Q1 devices are AEC-Q100 qualified for automotive applications.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 1.7MHz operation
- Robust isolation barrier with enhanced EMC
- > 100 years projected lifetime at 500VRMS working voltage
- Up to 3000VRMS isolation rating
- Up to 5kV surge capability
- ±100kV/µs typical CMTI
- ±8kV IEC-ESD 61000-4-2 contact discharge protection across the isolation barrier
- Same side ±8kV IEC-ESD unpowered contact discharge on SCL2 and SDA2 (side 2)
- 3V to 5.5V (side 1) and 2.25V to 5.5V (side 2) supply range
- Open-drain outputs with 3.5mA (side 1) and 50mA (side 2) sink current capability
- 80pF (side 1) and 400pF (side 2) max. capacitive load
- 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
Applications
- Isolated I2C buses
- SMBus and PMBus interfaces
- Power Over Ethernet (PoE)
- Motor control systems
- Battery management
Datasheets
Functional Block Diagram
Published: 2021-01-22
| Updated: 2024-09-10
