Looking for a "most common" PLL IC

a CD4046 ???

Aaah. Thank you. Only thing is, this is a 16-pin DIP, and I am working with an unlabeled 18-pin DIP. This is a start, but I wonder if there is something similar in an 18-pin package?

Thanks for the reply, and the help.

Dave

so you have all these motorola chips :

Hmmm. Only they dont appear to be all the same part. What am I missing, please?

Thanks again,

Dave

it's the same part but in different package size so here you can get a pll circuit in 18 pdip !

Huh. Okay, different packages, same part. Only this PLL appears to be used in frequency synthesizer applications only, not signal processing like the one I am dealing with. What I am dealing with is a device that allows someone to use the telephone to talk with someone at their front door, intercom-style, rather than through a one-of-many-frequencies application like a radio. Based on that, I don't *think* this is the part I am looking for. I do appreciate the help though. What you offer does meet the parameters I specified in my original request, and I am not un-appreciative. I have just realized more about what I am looking for than I originally did...

Many thanks,

Dave

Upon further reflection, I have decided that my previous opinion may be that of a person who is full of crap. You may have pointed me straight at the chip I need after all. I was thinking I needed a PLL chip for a signal processing circuit rather than a tuning circuit, but that may not be the case. It may be the exact opposite, in fact. Thank you very much for bringing this particular chip to my attention. It may be exactly what I need. Now I just have to figure out how to tell if it is, or if I need something else... Time to break out the freq counter and o'scope, with the whole circuit on the test bench.

Many, many thanks.

Dave