The CMOS 4050 is NOT open Drain, it IS fully Complimentary.

(But I DO have abut 45ea. 7407s lying around.)

Bill Brooks wrote:

> I'm hooking up a circuit that calls for a 7407 hex buffer (open collector).
> I have a few 4050 chips, which are supposed to be similar, but after much
> google searching, cannot determine if they are open-collector or not.  Can
> anyone help me out, and is there an easy way to determine this?
>
> Please pardon my ignorance...
>
> Bill.
>
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  |  __O    Thomas C. Sefranek   tcs@cmcorp.com
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