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Working circuit crystal oscillator with CMOS inv 10MHz

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atferrari

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Most Helpful Member
Has anybody ever managed to implement an oscillator with 10 MHz crystal and a CMOS inverter? One that really worked.

Could I see that circuit?

It seems that I cannot go further than 4MHz using the 74HC04.

Theory I read a lot but did not found a circuit said to actually work.
 
Tried it many, many years ago and never had much luck. If I want a 10 MHz clock today I use Mfr's Part #: XO52CTFLNA20M from one of these little complete oscillators. At a cost of literally a few USD. Additionally they have on board Enable / Disable which is nice. I use the 20 MHz and do a divide by 2 with a FF.

Ron
 
This is a design that I have used. You can miss out the divider. I agree with Reloadron that it is far easier to use a complete oscillator.

This uses UM-1 crystals, with a 30 pF load.

Crystal
Freq 12-20 MHz

R1 Omit
R2 link
R3 1M

C1 10,000pF
C2 47pF S.O.T.
C3 68pF

IC1 TC7SU04F 108-5252 from Farnell 74HC1GU04GW RoHS Compliant

IC2 74HCT393D

Divide ratio Pin to link to output
2 11
4 10
8 9
16 8
 

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