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ISOW1412: Communication with ISOW1412 -> ISO1432

Part Number: ISOW1412
Other Parts Discussed in Thread: ISO1432,

Tool/software:

Hello,

I checked both ISO1432 and ISOW1412. Both seems to meet my specifications but I really liked that the ISOW1412 has the isolated DCDC built-in.

I want to send a RS-485 communication through a 2 meter cable. My idea is to put an ISOW1412 on the control board and a ISO1432 on the daughter board. 

Do I need that both transceivers are powered locally on their secondary side? Could I send the power generated by the ISOW1412 through the cable so it powers up the secondary side of the ISO1432?

Regarding shielding the cable, should I connect the shield to the isolated GND of both transceivers?

Thank you