INPUT AND OUTPUT CIRCUIT FOR AN INTEGRATED SWITCHING CIRCUIT, METHOD FOR TESTING AN INTEGRATED SWITCHING CIRCUIT AND AN INTEGRATED SWITCHING CIRCUIT PROVIDED WITH SAID INPUT AND OUTPUT CIRCUIT

摘要

The invention relates to an input-output circuit (2) for an integrated switching circuit comprising at least one signal connection (PAD) for an external contact, a protection circuit (ESD), an input driver (IN) and an output driver (OUT). The inventive input-output circuit (2) also comprises an additional circuit (22, 31, 51) whose first input is connected to the signal connection (PAD) by the protection circuit (ESD) and a test value for the input-output circuit (2-5) arranged at the output of the additional circuit.