Patent ID: 7391239

Claim:
A bus driver circuit supplying an output signal in response to at least one control signal, said circuit comprising: an output terminal; a pair of transistors of opposing conductivity types, each having a conduction channel and a control electrode, the conduction channels of the two transistors being linked between first and second conductors supporting power supply voltages, the output terminal being linked to a connection node between the respective conduction channels of the transistors; a pair of control circuits respectively linked to the control electrodes of the transistors to supply, in response to a transition of the at least one control signal, an increasing or decreasing voltage having a slope that differs according to the control circuit and the at least one control signal; and a voltage pumping circuit having an input linked to the control electrode of a first one of the transistors and an output linked to the control electrode of a second one of the transistors, said pumping circuit being structured to produce a voltage step at its output when a voltage at its input crosses a threshold voltage, wherein the pluming circuit comprises a pumping capacitor coupled between the input and output of the voltage pumping circuit.