Please see the attached document for Frequently Asked Questions (FAQ) and their answers regarding the Si5344H and Si5342H coherent optical clocks.


The topics from the Table of Contents are listed below.


PCB Design and Layout Guidance

Where can I find the IBIS model for the Si5342H/44H?

Where can I find the Si5344H/42H schematic footprints and symbols?

Do you have layout recommendations I should follow?

Do you have a list of recommended crystals?

I don’t want to use a crystal with the Si5344H/42H.  Can I use an XO or TCXO as the XA/XB reference instead?  And if so, how do I interface an external oscillator to the device?

Are there any power supply filtering requirements or recommendations?

Is there any specific power supply sequencing requirement?

What serial interfaces does the device support?

What is the recommended PCB footprint?

Package Information

What are the package dimensions?

Where can I get detailed material composition information on these devices?

Is the part RoHS compliant?

What is the Moisture Sensitivity Level (MSL) rating for the Si5344H/42H?

What is the recommend profile for solder reflow process?

Frequency Plan and Clock Design Decisions

What is the output frequency range of the Si5344H/42H?

What development software/tools do you have available to use with the Si5344H/42H?

How do I select proper jitter attenuation bandwidth?

Does the device support automatic input clock selection and does it support hitless switching?

Is there a recommended full device programming procedure?

Can I change one output frequency without disturbing other output(s)?

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