On Mon, Mar 25, 2013 at 12:45 PM, David McGaw <n1...@alum.dartmouth.org> wrote: > S/LS logic was introduced in the mid 70's, F/AS/ALS around 1980, HC was > early 80's. By the third 7400 generation (F/AS/ALS) the problem was well > known with parameters available and the logic fairly hard to it
I think this is all moot because as I just wrote in another email the PPS signal never gets out of the 74hct4046 chip. What gets out is the output of "Phase Detector #3". You've have to know in some detail how the 4046 chips' PD3 works. Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
