* '''[https://en.wikipedia.org/wiki/CAN_bus Controller Area Network (CAN):]''' The CAN bus is a balanced (differential) two-wire interface. This bus use [https://en.wikipedia.org/wiki/Non-return-to-zero NRZ encoding] to ensure compact messages with a minimum number of transition and high resilience to external disturbance.

* '''[https://en.wikipedia.org/wiki/SpaceWire SpaceWire:]''' The Spacewire bus provides a bidirectional serial interconnect which builds a scalable parallel system using a pair of unidirectional lines. IEEE 1355 defines the Physical and Data Link Layer. The electrical interface is specified as standard Transistor-Transistor Logic (TTL).

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