A 4066 quad bilateral switch (CMOS) will be pretty easy to find and use. I've used them in past pic projects successfully. On resistance is about 200 ohms ( a bit high), but sufices for most signals. Matt B > > Hi everyone > > > > I need my PIC to intercept some sensor signals (when needed) and also have > > the ability to pass them through. I have used small relays for this > before. I > > don't have the room on the board to put relays. We are talking small > signal > > current less then 2mA. > > > > What kind of solid state switches are there that don't have a voltage > drop. I > > don't want to affect the signal. > > > > I have never used bus drivers would something like that work? Could you > > recommend Part numbers? > > > > Any other ideas? > > > > > > Jon