Jon, You could try the Analog Devices ADG751, ADG752, ADG714 or ADG715 These have about 2 to 15 ohm "on" resistance depending which one you select. IIC or SPI interface on the 714 and 715. http://www.analog.com David > 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 >