Patent ID: 6960951

Claim:
A circuit for detecting a logic transition comprising: an input terminal receiving a logic signal; an output terminal generating a detection signal; a first capacitor; a second capacitor; an exchanging means for bringing the first capacitor from a first voltage to a second voltage and the second capacitor from the second voltage to the first voltage in response to a switching of the logic signal; means for maintaining a command node at the first voltage in the steady condition; means for generating a reset pulse through the first capacitor in response to the switching; means for bringing the command node to the second voltage in response to the reset pulse; a generator of current means for bringing back the command node to the first voltage through the second capacitor; and logic means having a regulated threshold voltage comprised between the first and the second voltage, the logic means asserting the detection signal when the command node is brought to the second voltage and deasserting the detection signal when the command node reaches the threshold voltage.