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Hi all

The HEF4040 with diode gating was used by Philips in their VR2020 VCR (1980's) on the head and capstan servo's, they switched in other diodes to give alternative divisions.

At these "sub light" speeds its not really a problem as the delays in the 4040 are so small compared to the clocking rate and the phase detector only wants to see the first edge.

I've done worse at 15MHz in a test pattern generator, but that did turn into a "glitch-a-rama" - add a 100ohm here and a 100pF there and you could tell the temperature by the ragged egdes of the pattern...

I use a PIC micro for dividers and PLL's in my Domino converter.

Well done Peter for doing it yourself.

Malcolm