dgmin...@mediacombb.net said: > The 1820-0313 is a Fairchild 931HC or Motorola MC931G DTL clocked flipflop. > I think if you toy with a TTL or CMOS JK-flipflop; it should work with no > issues. The only caveat would be the 4.2V Vcc. The DTL logic was spec'ed > to run at 5V, same as TTL, but don't know how TTL logic would work at 4.2V.
CMOS runs fine at lower voltages - just slower. Many data sheets for 5V parts include timings for 3.3V and 1.65V. I'd try HC. As a rule of thumb, speed (MHz) is roughly linear going through 0 at 0V and prop time is roughly linear going through 0 at absolute zero. -- These are my opinions. I hate spam. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
