That's not an easy decision to make.

However the consequences of leaving it vulnerable are less severe as it is
an off-the-shelf part whereas a programmed micro at best takes time to
replace. Also the scope for erratic operation is less.

Also you have the option of looking at more robust analog switches.

----- Original Message -----
From: Lorick <lorick@AIR.ON.CA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, October 11, 2000 2:26 PM
Subject: [EE]: 4066 wired to external circuit - Protection required?


> Would an analog switch IC that is passing signals from another board need
to
> have its switch contact pins protected similar to the recommendation for
> microcontroller inputs?  If so, how would one go about doing that without
> inhibiting the signal through the IC switch?
>

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