On 6/29/20 10:41 AM, ed breya wrote:
74AC logic would do it just fine, but needs 5V nominal for full-speed
specs. Lower supply voltage should work, but probably not all the way
down to 3.3V with 50 MHz clocking. The spec sheets should indicate the
possible range.
The 74AC390 can provide divide by 5 directly, with another divide 5 and
two divide 2 sections left over - lots of capability.
Ed
Couldn't find the AC390 - did find HC390, but it only goes to 35 MHz (at
room temp, less over temp)
However, you got me started hunting for decade counters, and there's
things like the 74HC4017 which claims fmax=60 MHz on the data sheet
front page, but only claims 35 MHz down in the AC specs
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