>> Two 74HC4051 (8 to 1 mux) with the outputs tied together. Enable one
>> or the other, no need for a 2 to 1 mux.
>
>Hmmm...  so I'd use 3 address lines to each chip, with the 4th address
>line used as the chip select (with an inverter for the 2nd chip select,
>something like a 74hc1g00).  So it's 3 chips (or should I say 2 1/2 chips? 
>:))
>That's better, though I'd still like a 1 chip solution.

CD4067/HEF4067/74HC4067

http://www.standardics.nxp.com/products/switches/4067/ 

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