For ground sense comparators, if a positive voltage is supplied to the input terminal when the power supply is not turned ON or when the power supply voltage is 0, will there be problems, such as when current flows from the input terminal to the power supply?|FAQ|ROHM Semiconductor

ROHM FAQ

FAQ

For ground sense comparators, if a positive voltage is supplied to the input terminal when the power supply is not turned ON or when the power supply voltage is 0, will there be problems, such as when current flows from the input terminal to the power supply?
- For ground sense comparators, a protection diode is not inserted between the input and power supply pins, so no current flows from the input pin to the power supply. However, please note that the withstand voltage will vary depending on the product. The BA10393F, BA10339F, and BA10339FV may become deteriorated or destroyed if voltage is supplied to the input pin when the supply voltage is 0V or turned OFF due to the upper limit specification (VCC) of the absolute maximum rated common mode input voltage. Apart from the BA10393F, BA10339F, and BA10339FV, it is possible to supply voltage to the input pin when the power supply is 0V or turned OFF based on the upper limit (VEE+36V) of the absolute maximum rated common mode input voltage.