Transient Voltage Suppressors (TVSs) operate as avalanche diodes which turn on at high voltages to shunt voltages to safe levels for the transceiver. Like MOVs, TVS devices have a very fast turn on time of less than 1 ns. However, unlike MOVs, TVS devices can have very low leakage current (as low as 100 nA). Also, capacitance is very low, making TVS devices virtually transparent to the CAN system during normal operation. TVSs are offered in pairs (matched capacitance) and have very small footprints, making them ideal for the CAN bus. Additionally, TVS devices can be combined with diodes to create different protection schemes. These combination circuits are beyond the scope of this presentation.