The TLIN2022-Q1 contains logic to detect bus stuck dominant system faults and prevents the device from waking up falsely during the system fault. Upon entering sleep mode, the device detects the state of the LIN bus. If the bus is dominant, the wake up logic is locked out until a valid recessive on the bus “clears” the bus stuck dominant, preventing excessive current use. Figure 7-2 and Figure 7-3 show the behavior of this protection.

Figure 7-2 No Bus Fault: Entering Sleep Mode with Bus Recessive Condition and Wakeup

Figure 7-3 Bus Fault: Entering Sleep Mode with Bus Stuck Dominant Fault, Clearing, and Wakeup