A compact and reliable TCA4307DGKR-based I²C Buffer board designed to extend and stabilize I²C communication between multiple devices or long cable runs.
The board isolates two I²C buses (A and B sides), protecting each side from bus capacitance issues, signal degradation, and hot-swap disturbances.
It’s fully compatible with 3.3V and 5V logic levels, making it ideal for mixed-voltage systems and long-distance I²C communication.
- IC: TCA4307DGKR (I²C Bus Buffer with Hot-Swap Protection)
- Logic Level Support: 3.3V ↔ 5V bi-directional
- Bus Isolation: Independent A-side and B-side I²C lines
- Protection: Hot-swap and bus fault detection
- Interface: Standard SDA/SCL lines
- Connector Type: STEMMA QT / Qwiic compatible (optional)
- Use Cases:
- Long-distance I²C communication
- Multi-device I²C networks
- Mixed voltage systems (3.3V and 5V)
- Bus isolation and noise reduction
- Hot-swap capable I²C setups
