SLLSFG2 December 2019 – December 2019 TCAN1044V
PRODUCTION DATA.
If the junction temperature of the TCAN1044V exceeds the thermal shutdown threshold, TTSD, the device turns off the CAN driver circuitry and blocks the TXD to bus transmission path. The shutdown condition is cleared when the junction temperature of the device drops below TTSD. The CAN bus pins are biased to VCC/2 during a TSD fault and the receiver to RXD path remains operational. If the fault condition that caused the TSD fault is still present, the junction temperature may rise again and the device enters a TSD fault again. The TCAN1044V TSD circuit includes hysteresis which prevents the CAN driver output from oscillating during a TSD fault. If there is prolonged exposure to a TSD fault condition the device reliability could be affected.