The invention relates to an Ethernet bus (1), comprising at least two controllers (2, 3), wherein the controllers (2, 3) each have a bus driver (4) and a microprocessor (5), wherein at least the first controller (2) has a voltage regulator (10) that can adjust at least two voltage values for the operating voltage (VCC) of the controller (2), wherein a first voltage value is provided for a "sleep"operating state and the second voltage value is provided for a "communication"operating state, wherein the bus drivers (4) are each connected via at least two bus lines (6, 7), wherein the bus lines (6, 7) each have a termination network (8) connected to them, wherein the termination network (8) has at least two resistors (R1, R2) and a capacitor (C3), wherein the two resistors (R1, R2) are provided with one bus line (6, 7) each and are connected to one another at a centre tap (9) of the termination network (8), wherein the capacitor (C3) of the termination network (8) is arranged between centre tap (9) and earth, whe
