DS25BR101: Output behaivor

Kei Kuwahara

Expert 4870 points

Part Number: DS25BR101

Hello team,

What would be the output state, if I input Vcc or GND to both IN+ and IN- pin at the same time?

Best Regards,
Kei Kuwahara

7 months ago

0 David (ASIC) Liu 7 months ago

TI__Guru*** 149805 points

Kuwahara-san

Please see the spec below

So for both cases, differential input voltage will be low and output will be low as well.

Thanks

David

0 Kei Kuwahara 7 months ago in reply to David (ASIC) Liu

TI__Expert 4870 points

Hi David-san,

Thank you for your answer.

However, I am bit confused.

From the table you attached, I think it will be both HIGH when, both input was VCC.
And when both input was GND (0V), it might not determine HIGH or LOW because VTH and VTL are both 0V (TYP).

Is my understanding correct?

Best Regards,
Kei Kuwahara

0 David (ASIC) Liu 7 months ago in reply to Kei Kuwahara

TI__Guru*** 149805 points

Kuwahara-san

This is a typo on my part. You are correct that differential output voltage will then be undefined. If you want the output voltage to be in certain state, then you would need to implement external failsafe biasing. Please see this app note, https://www.ti.com/lit/an/snla051c/snla051c.pdf

Thanks

David

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DS25BR101: Output behaivor