In case you do not need a galvanic insulation, you might be interested in our product Levii.

• Galvanic isolation for the I2C bus
• Integrated level shifter for voltages between 1.5 V and 5.5 V
• Two bi-directional insulated lines for SCL and SDA
• Two additional uni-directional insulated lines
• Small robust plastic housing with two standard Mini-DIN connectors
• Power is taken from the I2C power lines
• Works with Tracii 400, Connii, Connii MM 2.0 and of course with Tracii XL

• Optii is indispensable in environments with a risk of differing potentials between two or more I2C components
• In distributed systems without a dedicated ground connection

• Functional Description
• Example Transfers
• Technical Specification
• Trouble Shooting

• Full Mini PS/2 Cable
  You might need two to connect Levii to your two I2C buses.
• Tracii XL 2.0
  I2C High Speed Interface for USB

• Order your Optii for 395 €