[time-nuts] CPLDs for clock dividers

[Pete Rawson]

On the subject of dividers, the 74HC4059 is a synchronous CMOS part
with a really easy to use divide by 10K function & favorable jitter
performance. It's cheap & available from distributors.  With a 10MHZ
sinewave input, jitter measures less than 4ps rms & 27ps p-p on 2 
samples I checked.

Pete Rawson

On Feb 3, 2010, at 12:42 PM, paul swed wrote:

> They are indeed cheap and it would be handy to have low noise divider
> chains.
> 6 decades worth. 74ls90s get really boring to wire.
> Unfortunately I am unfamiliar with using the device. But I do seem them
> used.
> 
> On Wed, Feb 3, 2010 at 1:59 PM, Matt Ettus <boyscout at gmail.com> wrote:
> 
>> Does anyone have any experience using CPLDs for very low phase noise
>> dividers?  You can get an XC9536XL from Xilinx for around $1, and I
>> thought it would make a good divide by 2 through 10 device.
>> 
>> Matt
>> 
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