TCAN1044V-Q1: tcan1044V-q1 CAN_L short to gnd

Hello, The TCAN1044-Q1 has several protection features that limit the short circuit current when a CAN bus line is shorted. These include CAN driver current limiting in the dominant and recessive states and TXD dominant state timeout which prevents permanently having the higher short circuit current of a dominant state in case of a system fault. During CAN communication the bus switches between the dominant and recessive states, thus the short circuit current may be viewed as either the current during each bus state or as a DC average current.

In addition, if the pins are float, The TCAN1044-Q1 also has internal pull-ups on critical pins which place the device into known states if the pin floats. This internal bias should not be relied upon by design though, especially in noisy environments, but instead should be considered a failsafe protection feature.