The invention concerns a circuit comprising: a first transistor (202) having a first main current node coupled to a first voltage signal (CNVDD), a control node coupled to a second voltage signal (CPVDD) and a second main current node coupled to an output node (206) of the circuit; a second transistor (204) having a first main current node coupled to a third voltage signal (CNGND), a control node coupled to a fourth voltage signal (CPGND) and a second main current node coupled to said output node of the circuit; and circuitry (210, 212) adapted to generate said first, second, third and fourth voltage signals based on a pair of differential input signals (CP, CN), wherein said first and second voltage signals are both referenced to a first supply voltage (VDD) and wherein said third and fourth voltage signals are both referenced to a second supply voltage (GND).