1. An output driver circuit, comprising: a first plurality of output transistors coupled to each other in parallel between a first intermediate node and an output node, each of the output transistors having a control terminal that controls the impedance of the respective output transistor; a first control circuit sequentially applying to the control terminals of the output transistors at different times respective control signals rendering the output transistors conductive; and a reprogrammable first impedance coupled between the first plurality of output transistors and a first power supply node, the first impedance including a plurality of transistors coupled to each other in parallel that are programmed on or off to obtain a desired reprogrammable first impedance.