TFP401A setup/hold timing question

Masazumi Ishii

Genius 3945 points

Other Parts Discussed in Thread: TFP401A

Hello.

There is a question about TFP401A.

A question is indicated on attachment　sheet.
Please take care of an answer.

Thank you.

TPF401.pdf

over 8 years ago

0 Elias Villegas M. over 8 years ago

TI__Guru* 76130 points

Hello,

Your understanding is correct for Q1.

Please elaborate more on Q2, I don't fully understand.

Regards

0 Masazumi Ishii over 8 years ago in reply to Elias Villegas M.

Genius 3945 points

Hellow.

Thank you very much for your answer.

It starts to be attachment about Q2.

Thank you.

TFP401-3.pdf

0 Elias Villegas M. over 8 years ago in reply to Masazumi Ishii

TI__Guru* 76130 points

Hello,

Figure 5 in datasheet does not represent a continuous waveform, it actually represent two different captures, the fist half is for the Tsu1 and Th1 and the second half of the figure is valid for Tsu2 and Th2.
So, technically there is no "invalid data" as you represent on your figures.
Valid data is actually sent in every clock cycle.

Your calculation is correct in the way that with lower frequencies these times will be longer.

Regards

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TFP401A setup/hold timing question