ISOW7842: Can this isolator be used in 3.3-V Input, 3.3-V Output

Nishalini Baskaran

Prodigy 210 points

Part Number: ISOW7842

Tool/software:

Can this isolator be used 3.3-V Input, 3.3-V Output?

In my old design they have used as 5-V Input, 5-V Output, whether this will affect any functionality in isolator ?

6 months ago

0 Varun Kumar 6 months ago

TI__Expert 8910 points

Hi Nishalini,

Thanks for reaching out.

Yes, It can be used for 3.3V Input and 3.3V Output without any issue as this is a supported mode of operation. There will be changes in Electrical and Supply Current parameters compared

The section 7.15 and section 7.16 mentions parameter value for this mode of operation.

Regards
Varun

0 Nishalini Baskaran 6 months ago in reply to Varun Kumar

Prodigy 210 points

whether it can be used as 3.3V input and 5V output?

+1 Varun Kumar 6 months ago in reply to Nishalini Baskaran

TI__Expert 8910 points

Hi Nishalini,

Regarding 3.3V Input and 5V Output we'll be addressing it in the separate e2e post raised by you here: (+) ISOW7842: can we use this part as input 3.3 and output 5V - Isolation forum - Isolation - TI E2E support forums

If there are no further questions on the 3.3V input and 3.3V output, can we consider this post as resolved?

Regards
Varun