Device (12; 16; 32) for a serial bus system, comprising a receiver for receiving a signal from a bus of the bus system, in which, for a message that is exchanged between subscriber stations (10, 20, 30) of the bus system, a recessive bus state (401, U_D1) is overwritable by a dominant bus state (402, U_D0) and the recessive bus state is generated differently in a first communication phase (451; 453, 451) from the recessive bus state (U_D1) in a second communication phase, wherein the receiver is configured to generate a digital signal (RXD; S1) on the basis of the signal received from the bus and to output the signal (RXD; S1) to a communication control device for evaluating the data contained in the digital signal (RXD; S1), wherein the receiver is additionally configured to use at least one first reception threshold (T_u) and a second reception threshold (T_p1; T_2; T_p1, T_p2) in the second communication phase for generating the digital signal (RXD; S1), and wherein the second reception threshold (T_p1; T_2; T_p1, T_p2) has a voltage value that is lower than the voltage value of the first reception threshold (T_U) or higher than the highest voltage value established on the bus during normal operation for a dominant bus state (U_D0) in the second communication phase, characterized in that the receiver is configured to use in addition a third reception threshold (T_p2) in the second communication phase for generating the digital signal (RxD), said third reception threshold having a voltage value that is higher than the highest voltage value that is driven by a subscriber station (10, 20, 30) of the bus system for a bus state in the second communication phase, wherein for the receiver, with the second reception threshold (T_p1), a transmission conflict that is recognizable is different from that recognizable with the third reception threshold (T_p2). a receiver for receiving a signal from a bus of the bus system, in which, for a message that is exchanged between subscriber stations (10, 20, 30) of the bus system, a recessive bus state (401, U_D1) is overwritable by a dominant bus state (402, U_D0) and the recessive bus state is generated differently in a first communication phase (451; 453, 451) from the recessive bus state (U_D1) in a second communication phase, wherein the receiver is configured to generate a digital signal (RXD; S1) on the basis of the signal received from the bus and to output the signal (RXD; S1) to a communication control device for evaluating the data contained in the digital signal (RXD; S1), wherein the receiver is additionally configured to use at least one first reception threshold (T_u) and a second reception threshold (T_p1; T_2; T_p1, T_p2) in the second communication phase for generating the digital signal (RXD; S1), and wherein the second reception threshold (T_p1; T_2; T_p1, T_p2) has a voltage value that is lower than the voltage value of the first reception threshold (T_U) or higher than the highest voltage value established on the bus during normal operation for a dominant bus state (U_D0) in the second communication phase, characterized in that the receiver is configured to use in addition a third reception threshold (T_p2) in the second communication phase for generating the digital signal (RxD), said third reception threshold having a voltage value that is higher than the highest voltage value that is driven by a subscriber station (10, 20, 30) of the bus system for a bus state in the second communication phase, wherein for the receiver, with the second reception threshold (T_p1), a transmission conflict that is recognizable is different from that recognizable with the third reception threshold (T_p2).