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TUSB522P: Circuit check

Part Number: TUSB522P

Dear E2E Member,

Our Customer want to use TUSB552P to replace PI3EQX7502AI, So I have a questions need to check.

Does TUSB522P Pin 4(OS2) and Pin 15(OS1) can flaoting or not?

becasue PI3EQX7502AI pin 4&15 is NC pin, they don't want to modify circuit.

Thanks