Patent ID: 7155603

Claim:
A circuit arrangement for detecting the state of at least one electrical switch comprising: a) in each case a set input and a sensor output, each of which is assigned to a respective electrical switch, b) wherein the respective switch can connect the sensor output to a first potential via a first current path when a signal with the value logic “1” is present at the set input and can connect the sensor output via a second current path to a second potential when a signal with the value logic “0” is present at the set input, and c) wherein a wake-up signal is generated at a wake-up signal output if a current which is greater than a predetermined threshold current is detected in the first or second current path, wherein for each of the at least one electrical switches, a push-pull output stage is provided whose input of which is connected directly or indirectly to the set input and whose output is connected directly or indirectly to the sensor output, wherein the output of the push-pull output stage is connected to the first potential if a signal with the value logic “1” is present at the set input and to the second potential if a signal with the value logic “0” is present at the set input.