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ISOUSB211: Power requirements

Mohammed Arshad M
Prodigy 110 points

Part Number: ISOUSB211

We are using the ISOUSB211DPR in our design and are already providing 5V and 3.3V input supplies as per the typical application circuit. Could you please confirm if it is mandatory to provide an external 1.8V power supply, or if the device can operate normally without it in this configuration?