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TPD12S016: CEC pin need add an external diode or not?

Part Number: TPD12S016
Other Parts Discussed in Thread: TPD12S521,

Refer to the below link and comparing with its application schematic of TPD12S521, should we add an external reverse schottky diode on TPD12S016’s CEC pin.

And, why the pull-up(26K ohm) was integrated into the IC pin? Thank you.

-  TPD12S016