A bus driver having a ground terminal and a first and a second terminal for a first and a second bus wire, wherein the bus driver is designed for two operation modes, wherein, in the first operation mode, the bus driver provides at the first terminal a first output voltage comprising a first data signal and wherein the bus driver provides at the second terminal a second output voltage comprising a second data signal, wherein, in the second operation mode, the bus driver provides at the first terminal a first output voltage comprising a third data signal, wherein the bus driver provides at the second terminal a second output voltage, wherein a curve of the second output voltage is synchronous however inverted in relation to a curve of the first output voltage, wherein the bus driver comprises a first and a second output stage, wherein the first output stage is designed as a push-pull output stage, and has a first and second transistor connected in series, wherein a connection point between the first and second transistors (136, 138) is connected to the first terminal to be connected with the first bus wire, wherein the first output stage further has a first preamplifier for driving the gate of the first transistor, a second preamplifier for driving the gate of the second transistor, and a first preamplifier driver for providing to each of the inputs (151, 153) of the first and the second preamplifier (146, 148) a voltage appropriate to drive the first and second preamplifiers (146, 148) and the first and second transistors (136, 138) assigned thereto to work in the push-pull mode as a first push-pull output stage, wherein the second output stage is designed as a push-pull output stage, and has a third and fourth transistor connected in series, wherein a connection point between the third and fourth transistors (236, 238) is connected to the second terminal to be connected with the second bus wire, wherein the second output stage further has a third preamplifier for driving the gate of the third transistor, a fourth preamplifier for driving the gate of the fourth transistor, and a second preamplifier driver for providing to each of the inputs of the third and the fourth preamplifier (246, 248) a voltage appropriate to drive the third and fourth preamplifiers (246, 248) and the third and fourth transistors (236, 238) assigned thereto to work in the push-pull mode as a second push-pull output stage, wherein the bus driver further comprises a first and a second data input terminal, and a logic having an inverter and a switching function, wherein the input of the inverter and the input of the first preamplifier driver are connected to the first data input terminal and the output of the inverter is connected to the switching function, wherein, in the first operation mode, the switching function is set to a first switch mode, in which the second data input terminal is connected to the input of the second preamplifier driver, and wherein, in the second operation mode, the switching function is set to a second switch mode, in which the output of the inverter is connected to the input of the second preamplifier driver, wherein each of the first and second output voltages (120, 220) is an electric potential difference in relation to a potential of the ground terminal.