Dr. Imre Bartfai wrote:

> Hi all,
> I'll suggest to use NE556 instead of NE555, bcus it contains 2 pieces
> NE555 so the amount of chips required is halved. I think so you need about
> 10 cubic foot to place your design (instead of about 18).
>

Whatever happened to 558's.  4 timers on one IC.