Chris MacDonald wrote: > * The 4066 analog switch is mostly wasted with only one of four switches > being used. Maybe it could be eliminated by using a discrete component > (FET)? There's an IC with only one 4066-type switch in it: the TC4F66S. It's SMD, but only 5 leads, so could be hand-soldered. It is not cheaper than a CD4066. Ingo