Abstract: Push-pull driver with reduced noise generation resulting from driver switching. A further transistor is arranged between the driver output transistor (which becomes conductive at the low output level) and the chip ground line. Its base is connected to a reference voltage source the other pole of which is connected to the ground plane of the circuit card to which the corresponding semiconductor chip is attached. If a noise voltage is generated on the chip ground line, the emitter potential of the further transistor is pulled up. As its base potential is maintained at a fixed value by the applied reference potential, this transistor becomes less conductive. As a result, the rate of current change in the output stage is reduced. The slowed down current rise, leads to a reduced noise voltage developing on the common chip ground line.