LMK1C1102: High-level input voltage range

Allen yang

Intellectual 385 points

Part Number: LMK1C1102

Hi Team,

Does TI have products with the following conditions?

Clock buffers, High-level input voltage < 0.8V

Thanks

5 months ago

0 Andrea Vallenilla 4 months ago

TI__Genius 10975 points

Hello Allen,

What frequency are you looking for? What output type? How many outputs?

Best,

Andrea

0 Allen yang 4 months ago in reply to Andrea Vallenilla

Intellectual 385 points

What frequency are you looking for?

>80MHz

What output type?

don't care

How many outputs?

don't care

0 Andrea Vallenilla 4 months ago in reply to Allen yang

TI__Genius 10975 points

Allen,

If you operate the LMK1C family at 1.8V, then the range between V_OH and V_IH will be ~0.72V < 0.8V. Let me know if you still have any other questions.

Best,

Andrea

0 Allen yang 4 months ago in reply to Andrea Vallenilla

Intellectual 385 points

Hi Andrea,

VDD=1.8V，VIH=0.7*1.8=1.26V

Why is it equal to 0.72V

Is my calculation wrong?

0 Andrea Vallenilla 4 months ago in reply to Allen yang

TI__Genius 10975 points

Hi Allen,

It's not wrong, I thought you were asking for the range/difference between V_OH - V_IL. I'll have to look to see if we have a part that has a lower V_OH.

Best,

Andrea

0 Allen yang 4 months ago in reply to Andrea Vallenilla

Intellectual 385 points

Hi Andrea,

Did you fine it?

0 Andrea Vallenilla 4 months ago in reply to Allen yang

TI__Genius 10975 points

Allen,

I believe the LMKDB1xxx LP-HCSL buffer family may work since it oscillates around 0.4V so the V_IH level has to be lower than 0.8V. Note that most of our parts are meant to output a specific output type rather than stay within certain V_IH and V_IL levels.

Here is the datasheet: https://www.ti.com/lit/ds/symlink/lmkdb1120.pdf?ts=1704824815088&ref_url=https%253A%252F%252Fwww.google.com%252F

Best,

Andrea

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LMK1C1102: High-level input voltage range