If the device is unpowered, it is designed as an ideal passive or no load to the CAN bus . The bus pins are designed to have low leakage currents when the device is unpowered, so they do not load the bus. This is critical if some nodes of the network are unpowered while the rest of the of network remains operational.

The logic pins also have low leakage currents when the device is unpowered, so they do not load other circuits which can remain powered.