An integrated circuit protected against electrostatic discharges, including: first and second supply rails; first and second intermediary rails normally connected to the first and second supply rails; inverters formed of a P-channel MOS transistor series-connected to an N-channel MOS transistor, the sources of the P-channel and N-channel MOS transistors being respectively connected to the first and second supply rails and the bodies of the P-channel and N-channel transistors being respectively connected to the first and second intermediary rails; a positive overvoltage detector between the first and second supply rails; and a switch for connecting the first and second intermediary rails to the second and first supply rails when a positive overvoltage is detected.