If you read the datasheet carefully, that good performance only exists over a certain range of parameters, and is only typical, not guaranteed. See the list of datasheet references I posted in the other HC4046 thread a few days ago.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Whilst I agree that each manufacturer gives a range for each parameter, my experience is that each manufacturer produced devices which were amazingly consistent, but wildly changing from one manufacturer to another. I recall that each manufacturer specified their 74HC4046 very differently to show theirs in the best light. One problem I had years ago was that one version produced over 25MHz irrespective of R and C with a control voltage at +5V, causing my counters to fail and the whole PLL to fall over!
-- Mike Perkins Video Solutions Ltd www.videosolutions.ltd.uk
perhaps minimum wage isn't enough to live on?
-- ?? 100% natural --- news://freenews.netfront.net/ - complaints: news@netfront.net ---
Which means a lot of people are being employed AND make good money to help the unemployed :-)
-- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------
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