TCA9554A - About “Vcc_RT” in the recommended supply sequencing and ramp rates

Hide

Guru 21045 points

Hi Team,

We found difference between “Old datasheet (SCPS196A)” and “New datasheet (SCPS196B)”.

So, we would like to know the reason why "TCC_RT(min)” is changed and “TCC_RT(max) ” is blanked.

We are understanding that this spec will turn worse to change from “TCC_RT=0.01ms(min)” to “TCC_RT=0.1ms(min)”.

Because, if “TCC_RT” is 0.09ms, this is out of a recommended range.

Is my understanding correct?

And, May I think that there is not the maximum of "TCC_RT"?

[changing points]

Old datasheet

New datasheet

Regards,

Kanemaru

over 9 years ago

0 Rajan Arora over 9 years ago

TI__Intellectual 2175 points

Hi Kanemaru-san,

Let me check and get back to you.

Thanks,

Rajan

0 Hide over 9 years ago in reply to Rajan Arora

Guru 21045 points

Hi Rajan-san,

Thank you for your response.

I’m looking forward to hearing from you.

Regards,

Kanemaru

0 Rajan Arora over 9 years ago in reply to Hide

TI__Intellectual 2175 points

Hi Kanemaru-san,

The new datasheet value for Rise Rate = 0.1 ms is correct. This was an error in last version of the datasheet which has been fixed in this new release.

And yes, there is no value for maximum ramp rate. It can ramp at any time slower than 0.1 ms.

Please let me know if you have any question.

Thanks,

Rajan

0 Hide over 9 years ago in reply to Rajan Arora

Guru 21045 points

Hi Rajan-san,

Thank you for the information.

I will contact you if there is anytihg.

Regards,

Kanemaru

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TCA9554A - About “Vcc_RT” in the recommended supply sequencing and ramp rates