Looking for a 16 channel MUX, with ultra low resistance (<1 ohm), and relatively low voltage ~10V is fine.

 

http://www.datasheetcatalog.org/datasheets/90/109549_DS.pdf

One is active HIGH, the other is active LOW. Likely, you'd prefer the active HIGH, but that's just an assumption.

I couldn't tell you the exact input impedance, but it is very very high, as it's a CMOS device.

 

Since resistance is specified, I believe guardado is looking for an analog MUX with Ron<1Ω, and 10V capability. I don't think such a part exists, but I could be wrong.

 

I found a few 8 to 1 analog muxes with an Ron ~0.7Ω. You could connect two together using a output enable to maintain the 0.7Ω impedance, but their supply voltage is 3.6V max...

 

I found a few 8 to 1 analog muxes with an Ron ~0.7Ω. You could connect two together using a output enable to maintain the 0.7Ω impedance, but their supply voltage is 3.6V max...

Yeah, I saw one similar to that too.
http://www.intersil.com/en/products...itches-muxs-crosspoints/ISL84781.html#00.html

 

You can make one from p-channel FETS and a decoder