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for next rev more robust output drivers #5

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abzman opened this issue Aug 29, 2020 · 2 comments
Open

for next rev more robust output drivers #5

abzman opened this issue Aug 29, 2020 · 2 comments

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@abzman
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abzman commented Aug 29, 2020

use proper logic families and output drivers for switching section and LED drivers
@abzman
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abzman commented Aug 31, 2020

I can cut down on chips if we agree to swap the polarity of the enable signal. the whole select/enable circuit can be done in a single cd4000, but I'm having trouble finding them

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abzman commented Aug 31, 2020

if we flip the output polarity (which can be done in conjunction with #3 for no functional change) then it can all be done with a 4011 or 4093 which I can source

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