Abstract: A low supply voltage comparator in BICMOS technology includes: a first stage (1) with differential inputs (2,3) including, among others, two MOS transistors (MP1, MP2) of a first channel type controlling a first output bipolar transistor (T's); a second stage with differential inputs (2, 3) including, among others, two MOS transistors (MN1, MN2 (of a second channel type controlling a second output bipolar transistor (T's), the output transistors being mounted in series between two (A, M) terminals of application of respectively positive (Vdd) and negative (Vss) supply voltages; a switch (13' 13') for selecting one of the output transistors according to the common mode level of the input voltages with respect to the supply voltages; and a controller (15) for controlling the switch in all or nothing.

Abstract: A neutralization device to reset or inhibit at least certain electronic functions of an integrated circuit depending on the level of the supply voltage Vdd comprises a conditional feedback means to deactivate it especially in standby mode and then eliminate its consumption, and to reactivate it for certain modes of operation of the integrated circuit.