ISO1410: ISO1410,ISO3086T

Part Number:ISO1410

Hii,

I have a slight doubt of selection of Modbus Isolator

I have to isolate my signal as well as the power-

There are two options i am slecting among

1) ISO1410

in this i have to use separately Transformer Driver

2) ISO3086T

This has the transformer driver integrated in it

So which one to choose.

Apart from this, i would have aso used ISOW7841, but it is mentioned in a document that the efficiency reduces to 50%, what efficiency it is referring to.