Device for a user station of a serial bus system and method for communication in a serial bus system

A bus system, comprising:

• a bus;
• and
• at least two user stations which are connected to one another via the bus in such a way that they are able to serially communicate with one another and of which at least one user station is a user station including:
• a communication control unit configured to control a communication of the user station with at least one other user station of the bus system, and
• a device including a receiver configured to receive a signal from the bus of the bus system, in which, for a message that is exchanged between user stations of the bus system, a recessive bus state is overwritable by a dominant bus state and the recessive bus state is generated differently in a first communication phase from the recessive bus state in a second communication phase, the receiver being configured to generate a digital signal based on the signal received from the bus, and to output the digital signal to the communication control unit configured to evaluate data present in the digital signal, the receiver also being configured to use at least one reception threshold and one second reception threshold in the second communication phase for generating the digital signal, the second reception threshold having a voltage value, which is lower than the voltage value of the first reception threshold or higher than a highest voltage value which, during normal operation, is established on the bus for a dominant bus state in the second communication phase.

A method for communication in a serial bus system, wherein the method is implemented using a receiver configured to receive a signal from a bus of the bus system, the receiver carrying out the following steps:

• receiving a signal from a bus of the bus system, in which for a message that is exchanged between user stations of the bus system, a recessive bus state is overwritable by a dominant bus state, and the recessive bus state is generated differently in a first communication phase from the recessive bus state in a second communication phase;
• generating a digital signal based on the signal received from the bus;
• and
• outputting the generated digital signal to a communication control unit configured to evaluate data present in the digital signal, the receiver using at least one first reception threshold and one second reception threshold for generating the digital signal in the second communication phase, the second reception threshold having a voltage value which is lower than a voltage value of the first reception threshold or higher than a highest voltage value which, during normal operation, is established on the bus for the dominant bus state in the second communication phase.