[time-nuts] Divide by 3
csteinmetz at yandex.com
Thu Jul 7 17:55:53 EDT 2016
>> Charles wrote:
>> What specific chips did you use?
> Nick wrote:
Good to know, thanks. Just FYI, you may want to look into the NC7SZ86
(and other NC7SZ "TinyLogic" series parts). The NC7SZ86 is
pin-compatible with the 74VHC1G part, with several added advantages:
1). Output drive current is +/- 24mA rather than only 8mA. (This
doesn't matter for the divide-by-three circuit, but in my book sturdy
outputs are always preferred.)
2). It is a bit faster.
3). Speed doesn't drop off as much on lower-voltage supplies.
4). The NC7SZ series incorporates ground-bounce reduction for lower EMI
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