I have a good customer who wants us to build a weird glue-logic fanout box to solve some system problems. One thing they want to do is give us a 40 KHz clock and want us to output 100 KHz.
A 4046 or HC4046 could multiply by 5 to 200K, then we could divide by2 to 100K. That would use the drecky 4046 VCO and the drekkier phase detector with tons of phase noise. Is there a better 4046 chip around, or some equivalently simple pll/vco chip?
This is a sort of charity job, no reason to do it except that it's a good customer. I want to keep it simple, no uP code, no FPGAs to program, all old fashioned hardware.