"Brad O'Dell" writes:
>Actually, you might want to use a 7416 which is rated for 15V, or a 7406
>which is rated for 30V. The 7417 and 7407 are the non-inverting versions of
>these. The 7405 is only rated for 7V absolute maximum.
Thank you! Somehow, I had it that the 7405 would handle the
12-V potential on the collector. I'll rethink that part of the
design. I ran in to a problem a few days ago with my PIC programmer
so the project is on hold for a brief period of time anyway. I'll
probably just buy a pile of 7406's and 7407's the next time I order
from Jameco since it sounds like those would be good things to have
around when one wants to interface TTL-logic levels to higher voltages.
In this circuit, for example, there will be 10-K pull-up resisters to
12 volts and the open collectors will short them to ground when
they need to go low.
Martin McCormick
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Author: Martin McCormick
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