DS25BR110: DS25BR110 differential input

Roel

Part Number: DS25BR110

Is it ok to have the differential inputs of a DS25BR110 floating without having a risk of oscillating outputs or higher supply current drawn?

Roel

over 3 years ago

0 Nasser Mohammadi over 3 years ago

TI__Guru* 93670 points

Hi Roel,

It is a good design practice to terminate input versus leaving them floating. Maybe you can use a weak fail/safe circuit to prevent this. Please refer to document below for more details:

https://www.ti.com/lit/an/slla082b/slla082b.pdf?ts=1623342903857&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fdocs%252Funiversalsearch.tsp%253FlangPref%253Den-US%2526searchTerm%253Dfail-safe%2526nr%253D3615

Regards,,Nasser

0 Roel over 3 years ago in reply to Nasser Mohammadi

Prodigy 200 points

Thanks Nasser. Will use 2 extra resistors of about 560ohm. That will make the differential voltage to be about 0.25V, enough to guarantee a "1" at the output.

Regards,

Roel

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DS25BR110: DS25BR110 differential input