Author Topic: DeMorgan version of 74xx04 inverter?  (Read 574 times)

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Offline metertech58761Topic starter

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DeMorgan version of 74xx04 inverter?
« on: April 17, 2026, 01:37:44 pm »
When it comes to glue logic, sometimes it helps to switch a gate to its DeMorgan equivalent to better understand the flow of logic.

I'm surprised, though, that there's no DeMorgan version of the 74xx04 inverter with the inversion circle on the input (which I HAVE seen on schematics in the past).

What settings do I need to change after creating an editable copy of this gate to allow me to invoke its DeMorgan equivalent?
 

Offline Zoli

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Re: DeMorgan version of 74xx04 inverter?
« Reply #1 on: April 17, 2026, 04:23:03 pm »
In the symbol editor, change the pin graphic style to inverted:
 

Offline metertech58761Topic starter

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Re: DeMorgan version of 74xx04 inverter?
« Reply #2 on: April 20, 2026, 11:15:27 am »
Wasn't quite what I was after, but it put me on the right path.

Here's what I came up with.
 

Online Benta

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Re: DeMorgan version of 74xx04 inverter?
« Reply #3 on: April 20, 2026, 09:33:10 pm »
Wasn't quite what I was after, but it put me on the right path.

Here's what I came up with.

Almost right. You forgot unit G, but it's no big issue.
 
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