I'm trying to read the IS pin with atmega and stop any PWM or disable high side of my H bridge. To simulate a fault i'm shorting high side and low side while the H bridge is driving my motor. I have 1k pull down resistor connected to IS pin. Using an oscilloscope to catch any changes of IS pin... no matter how long i'm shorting high side and low side the IS pin remains logic LOW.

Heating up to 50 degrees with a hair dryer i can get 5v out of the IS pin.

Dstasheet says that BTN has protection for short circuit ... Is this true? If yes... Any suggestions to simulate this?