[Mathesar]

Originally Posted by jbilander

Maybe put a PLL on there or is it too easy?

https://www.diodes.com/assets/Datasheets/PT7C4511.pdf

Naah, too easy But probably even better than this:
https://www.google.com/url?sa=t&rct=...dpoEG39CRzHNY0
This is an old school (period correct) PLL in a DIP package that can run up to 16Mhz or so. But, if you let it run at just 7MHz and use the XOR-type phasedetector, the output of the phasedetector will be a nicely doubled 14MHz clock.