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ADV7180 with external 3.3V clock source

Question asked by sb86 on Oct 11, 2012
Latest reply on Mar 19, 2014 by GuenterL

Hi,

 

I use an ADV7180 with an external clock source. My clock source has 3.3V LVTTL levels and the XTAL clock input of the ADV7180 has 1.8V input levels.

According to absolute maximum rating, i understand that XTAL input protection diode is attached to DVDDIO +3V3 power supply.

 

So if my 3.3V clock source respect vil/vih XTAL input levels specifications, can i connect it directly without any issue (stress, clock jitter, … ?)

 

Thanks.

 

Best Regards.

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