> Have you by any chance used any of the chips? I was also hoping to > get some input as to which ones (if any) might be easier to implement No, sorry, can't help. And the only data on prescalers I have is from Plessey's 1989 Satellite, Cable and TV IC Handbook (which I got for the IR section). To take the first divider in the index as an example SP4632, 1GHz/64. 8 pin, 5V/25mA, Hi-Z input, balanced ECL o/p o/p = 0.8V p-p min, which I don't know whether is typical or not for high speed dividers -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu