[sdiy] Frequecy Divisor Question (TTL pulse stretcher needed)

[Michael Buchstaller]

Hey, now i begin to talk to myself.
At least to answer my oqn questions...

I made a simple circuit of a 74F00 and
a 74LS00 (to use this for delay)

ASCII-MAtic here:


(Input)                                         (Output)
                 |---\            |---\
O-------------*--| F >*---*-------| F  >*-------------O
              L--|   /    |     --|   /
                 |--/     *-|-\ | |--/
                          L-| >-'
                            |-/
                            LS

So the signal goes through the both "F" NAND gates,
but the 2nd ones turn-off is delayed  by the switching
time of the LS gate.

Crude, but it works. Now i can divide the 100 MHz down just fine.
But i bet there must be a simpler (1-chip) solution. Who knows ?



-Michael Buchstaller