> Peter L. Peres <RemoveMEplp@spam@ACTCOM.CO.IL> suggested addition of an RC network as a
> simple solution to a potential race condition when cascading two 74XX595s:
> >The SMT parts are required if the board is already manufactured. A
> >trace can be cut and the parts pasted from the back. In my case it was not
> >my design, I just invented a method to patch a stack of botched boards ;)
>
> Thanks for this suggestion, which looks very practical as the requisite
> track runs in the clear on the top side of the PCB.  I must read the data
> sheets more carefully in future!
>
> <Quick rant> I had assumed that, when the '595 data sheet says "The shift
> register has ... a serial standard output for cascading", it meant that in
> general this could be done without additional external components.  Since
> the '595 was designed more recently than the 4094 (at least, my '595 data
> sheet is dated Sept 1993 whereas my 4094 one is March 1988) I'm surprised
> that it did not draw on the strengths of the latter. </Quick rant>