[sdiy] small ,higher than 8 input multiplexers?

[Dave Manley]

You guys are right of course.  I forgot about the inhibit, and I
was mistakenly thinking about combining multiple logic devices instead 
of transmission gate based analog muxes where you can just wire-or the 
outputs.

Must not hit reply before coffee.

Now if Dan would switch to SMT, he wouldn't have to worry so much about 
package size.

-Dave


Tom Wiltshire wrote:
> Sorry Dave, but I'm with Ingo. You don't need the 2-to-1 multiplexer 
> afterwards. you can just use multiple 4051s and only enable one of 'em.
> 
> I've done this multiplexing CVs from a control panel into an ADC. The 
> panel is broken up into groups of eight, each of which has a 4051. The 
> master uP can select which control board it is reading, and which pot on 
> that board just by doing a bit of address decoding. I designed for up to 
> 64 pots like this, but haven't (quite) used them all.