Overvoltage protection

An integrated circuit (IC) comprising:

• first and second input pads;
• and
• a rectifying bridge comprising:
• a first branch connected between first and second input pads of the bridge and comprising a third output node of the bridge;
• a second branch comprising first and second metal oxide semiconductor (MOS) transistors series-connected between the first and second input pads, wherein sources of the first and second transistors are coupled to a fourth output node of the bridge;
• a first resistor connected between a gate of the first transistor and the second input pad;
• a second resistor connected between a gate of the second transistor and the first input pad;
• and
• for each of the first and second transistors, a circuit associated with the transistor comprises a first terminal connected to a drain of the transistor and a second terminal connected to the gate of the transistor, wherein the circuit is configured to electrically couple its first and second terminals when an absolute value of a voltage between the first terminal of the circuit and the first terminal of the other circuit is greater than or equal to an absolute value of a threshold of the circuit and the voltage has a same sign as the threshold.