TXB0304: The jitter performance when use TXB0304B as a clock buffer

Nick Dai

Part Number: TXB0304

Hi Team,

My customer wants to use TXB0304 to transfer a 19.2MHz clock(0.8Vpp ) from TCXO to a 1.8Vpp clock,but there are some jitter requirement for 1.8Vpp clock.

Do we have data about how much additional jitters will add to TXB0304B output when it used as a clock buffer?

And do we have any suggestion for the application that use level shift as clock buffer with low additional jitter?

Best Regards,

Nick Dai

over 6 years ago

0 Emrys Maier over 6 years ago

TI__Guru* 96681 points

Hi Nick,
I have notified the appropriate applications specialist - he should be back with you in the morning (Dallas time)

0 ShreyasRao over 6 years ago in reply to Emrys Maier

TI__Guru 57390 points

Nick ,

The TXB0304 operating range is 0.9 to 3.6v , and the clock signal has 0.8V peak. As long as the input levels are met , it should work with the TXB.
The other aspect of this to be taken care is the capacitance loading on the board. Since it is a low voltage operation, the max freq achievable is limited to a loading of 30pF. We do not have any jitter characteristics available for this device.

0 Nick Dai over 6 years ago in reply to ShreyasRao

TI__Expert 4240 points

Hi Shreyas,

Thanks for your feedback.

Do you think we can collect some data about the additional jitter performance?

And for this application,do you have any suggestion?

Best Regards,

Nick Dai

0 ShreyasRao over 6 years ago in reply to Nick Dai

TI__Guru 57390 points

Hi Nick ,

I am worried about the performance of the device operating at the borderline at 20Mhz.

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TXB0304: The jitter performance when use TXB0304B as a clock buffer