[Linux-works] built this I2C level converter to solve the problem. The circuit comes from an NXP app note (PDF) on the issue. You can take a quick peek at the suggested schematic from that document.

The I2C & SMBus Controller Core implements a serial interface controller for the Inter-Integrated Circuit (I2C) bus and the System Management Bus (SMBus). The I2C & SMBus Controller Core can be ...

[Max Holliday] found himself in this exact situation, running 69 I2C and SPI devices in a single satellite. Thus, he came up with circuits to auto-isolate devices from these buses in the event of ...