[sdiy] CMOS Switch

Scott Gravenhorst music.maker at gte.net
Sun Sep 5 21:51:18 CEST 2004


This may or may not help you:

http://www.uni-bonn.de/~uzs159/switch.html

>From René Schmitz's site.

xyzzy at sysabend.org wrote:
>Well, I was gonna use a 4066 but I've run into a snag.
>
>Does anyone know of a cmos switch where the signal being switched can exceed
>VCC?
>
>I've run into an interesting problem using 4066's.
>I need 60 switches.  I've got 2 registers out on this micro so 16 pins.  Was
>planning to use a 74C373 per pair of 4066's but max voltage of the 373 is of
>course 6volts and to switch the voltages I need ( -15volts ) I'll have to
>run the 4066 right up at supply rails, which means logic true is 15 volts...
>
>Or maybe I'm missing something easy.
>
>-- 
> ------------------------------------------------------------------------
> - Tom Arnold -       When I was small, I was in love,                  - 
> - Sysabend   -       In love with everything.                          -
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> --------------         -- Thomas Dolby, "Cloudburst At Shingle Street" -
>

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