Device and method for serial data transmission at a high data rate

A device for connecting a bus station to a communications bus including two bus lines, such that the bus station is able to send messages to, and receive messages from, additional bus stations connected to the bus, the messages being represented as a sequence of dominant and recessive bus levels on the two bus lines, the device comprising:

• a first hardware arrangement for setting a dominant bus level in the form of a first voltage difference between the two bus lines by driving a first electric current, wherein the device is arranged for the recessive bus level to set itself as a second voltage difference between the two bus lines at least partially by flowing of a discharge current via terminating resistors that are connected to the two bus lines;
• an analysis component that is configured to ascertain a presence of a defined switching condition by evaluating data signals which the device receives via the two bus lines, wherein the evaluation includes one of (a) ascertaining a switching time within a message, (b) evaluating an identification within a message, and (c) ascertaining a bit length with respect to time;
• and
• a second hardware arrangement configured to, in response to the presence of the defined switching condition, speed up the setting of at least one of the bus levels by driving a second electric current.