we are using the device PCA9306 as i2c level shifter to communicate between a 3,3V Master and a 5V Slave. Both sides of the SCL and SDA Pins were pulled up to VREF1 / VREF2 by using 1,8k resistors.
Unfortunately we mixed the VREF pins - so the 3,3V Master is connected to VREF2 and the 5V Slave is connected to VREF1.
Most of the time the device as well as the i2c communication works well, but under some circumstances, the device gets damaged.
Could the wrong connection of the VREF pins be the reason for this?