SLLT221A december 2022 – september 2023 ISO1540 , ISO1540-Q1 , ISO1541 , ISO1541-Q1 , ISO1640 , ISO1640-Q1 , ISO1641 , ISO1643 , TPD1E05U06 , TPD2E2U06
Example I2C Isolation Block Diagram- Prevents DC and unwanted AC currents between controller devices and peripheral ICs
- Allows signal transfer between controller devices and peripheral ICs
- Protects low voltage parts in a system from high voltage circuits
- Diminishes the effect of ground potential differences
- [FAQ] Why is the logic LOW level output voltage, VOL1, up to 0.8 V on Side 1 of the ISO1540/ISO1541 and ISO1640/ISO1641 bidirectional I2C isolators?
- [FAQ] ISO1640: Why are the maximum load capacitance and load current ratings for Side 1 of the ISO1640/ISO1641 less than Side 2?
- I2C Bus Pullup Resistor Calculation
- Top 6 design questions about I2C Isolators
- How do Isolated I2C Buffers with Hot-Swap Capability and IEC ESD Improve Isolated I2C?
- Digital Isolator Design
Guide
Need additional assistance? Ask our engineers a question on the TI E2E™ Isolation Support Forum
| Part Number | AEC-Q100 | Voltage Range | Data Rate | Bidirectional SCL Communication | Features | |
|---|---|---|---|---|---|---|
| ISO1640 | 3.0 – 5.5 V (Side 1) 2.25 – 5.5 V (Side 2) |
Standard Mode (0 to 100 kbps) Fast Mode (0 to 400 kbps) Fast-Mode Plus (0 to 1 Mbps) High-Speed Mode (0 to 3.4 Mbps) |
✓ | High CMTI Reinforced Isolation (ISO164xDW) Basic Isolation (ISO164xBD) Hot-Swappable I2C Connections Enhanced EMC |
||
| ISO1640-Q1 | ✓ | ✓ | ||||
| ISO1641 | ||||||
| ISO1643 | ✓ | Two additional unidirectional GPIO channels supporting up to 50Mbps | ||||
| ESD Protection | Channel Count | Working Voltage | Clamping Voltage | Capacitance | IEC 61000-4-2 | IEC 61000-4-5 Rating |
|
| TPD1E05U06 | 1 | 5.5 V | 10 V | 0.5 pF | 12 kV | 2.5 A | |
| TPD2E2U06 | 2 | 5.5 V | 9.7 V | 1.5 pF | 25 kV | 5.5 A | |
For additional device options, browse the online parametric search tools for Isolated I2C Transceivers, Non-Isolated I2C Transceivers, and ESD Protection Devices.