Try a FST3125 or similar, if you don't need more than a volt or two of
> swing. =A0These are cheap, fast, NMOS only switches with built-in gate
> drivers, and the substrate tied to a separate (negative supply rail)
> pin. =A0(You'll have to provide a negative rail about equal to the
> minimum of the signal swing, and a positive rail 5V or so above that.)
Plenty fast, but looks like TTL or HCMOS- 7V max. So I can pass a
+/-2V signal, which is fine, but I'd need a +/-2.5 or 3V supply to do that. I'd rather run from +/-5 or, better yet, +/-10V. And there is startlingly little data in either Fairchild or OnSemi datasheet - I mean, no isolation data? No V/I curve? The 4066 makes me feel more comfortable than this thing... too bad it's just not good enough.
No comments on using BJTs? Didn't one of the Johns here do something with those? John? Anyone? Bueller?...
Tim