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ADM2483 Production
The ADM2483 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on balanced, multipoint...
Datasheet
ADM2483 on Analog.com

ADM809 Production
The ADM809 supervisory circuit monitors the power supply voltage in microprocessor systems. It provides a reset output during power-up, power-down and...
Datasheet
ADM809 on Analog.com

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Article ADM2483_PV pin function

Q 

I have a question about ADM2483. Would you please help me with it.
I found that ADM2483 has a PV input pin and ADM809 is recommended to drive this
pin.
My question is, if I don't want to use this function, can I tie it to VDD
directly? Will it bring any problem for ADM2483?

 

A 

You can tie the PV pin of the ADM2483 to Vdd1 through a 10kohm resistor.