On 7/1/20 5:24 AM, Detlef Schuecker via time-nuts wrote:
Hi,
there are three JK-FF, with Q1 as MSB, Q3 as LSB. J1,K1 ist input to Q1,
etc. .
There are 8^6 possibilties (6 inputs to the Qx or QxNOT or to HIGH or to
LOW) of which
2069 generate a cycle length of 5.
The following wiring will generate the cycle 1 3 5 2 4 :
J1=Q2
K1=Q1
J2=Q3
K2=Q2
J3=Q2NOT
K3=Q1
Q3 is output with a 3/5 duty cycle.
The unused state 0 will migrate to 1,6->0,7->0.
So the machine does not get stuck.
Cheers
Detlef
And one can still buy 74AC109 dual JK which supposedly toggle at >100MHz.
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