ADG3241BKSZ-REEL7 active low sel pin

Hi MahmoudElsayed ,

The /SEL pin has a level translation select function. It means that regardless of its state, it will do a level translation as shown below:

/SEL = "HIGH" ---> 3.3 V to 1.8 V level translation
/SEL = "LOW" ---> 3.3 V to 2.5 V or 2.5 V to 1.8 V level translation

Best regards,
Christian

Thanks a lot  Christian

but can please help what meaning for bar over sel pin , and why it found?

Hi MahmoudElsayed ,

This means the pin is an active low and does a certain level translation in this part.

Best regards,
Christian