Part Number: PCA9515A
Hi User4961418,
If POWER = 0V, and the sensor is off, SCL0 and SDA0 will pull LOW towards GND.
If VCC = 3.3V, the PCA9515APW will see this as a logic low, and propagate a low condition to the MCU master.
In order to ensure high-z, consider VCC = 0V, or pulling the EN pin = GND.
Regards,
Tyler