We are using the following part in an existing design:
I would like to get clarity as to what is the maximum input voltage that the ADT7470 device is able to withstand on the SCL/SDA lines.
In the "Absolute Maximum Ratings" table in the datasheet, it specifies the following:
Voltage on Any Input or Output Pin: –0.3 V to VCC + 0.3 V
This would give a maximum input voltage of +3.6V.
However, on page 3 and 4 of the datasheet there is a note 4 which stipulates:
4 Logic inputs accept input high voltages up to 5 V even when the device is operating at supply voltages below 5 V.
I am not sure based on this what the maximum allowable input voltage is for SCL/SDA.