Luis wrote:

> Hi Guys
> I am trying an 40 MHz oscillator that I got from Farnell ( PN
> 112-549), but
> instead of getting a square wave or at least something that is
> close to it,
> I am getting a very bad signal.
> it seems to be oscillating but it looks like it has harmonics on it,with
> this I mean several frequencies not a consistent one. also it
> does not look
> like the wave form the datasheet shows.
> I am using a 200MHz oscilloscope with a 10X probe.
> As I never used an oscillator at such a high frequency, I do not know what
> to make of it, any help would be appreciated.
> regards
>         Luis

Have you included the 100nF cap across pins 14 and 7?  Is the voltage supply
+5v?
Other than that, I can't see why it shouldn't.  The data sheet shows them
hooking a scope up to the output to see the waveforms.

Brian.

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