Examples of Three-State Logic Applications in Modern Digital Circuits

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#1 21685954 14 Sep 2022 15:02

John Curtin John Curtin

Anonymous

Post #1
21685954 14 Sep 2022 15:02

Hi
Can you give me some examples of three-state logic application?
Is it used today?
Thank you very much
John.
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#2 21685955 19 Sep 2022 09:30

Chip Fryer Chip Fryer

Anonymous

Post #2
21685955 19 Sep 2022 09:30

Hi

Tri-State buffers are extremely useful and if you do a search I'm sure you will find many examples. Very simplistically in their "3rd state" they become "invisible" to the digital circuit being neither 1 nor 0.

Very handy when multiple circuits need to talk over a common address bus or such like.

Hope this helps
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#3 21685956 20 Sep 2022 15:48

Aubrey Kagan Aubrey Kagan

Anonymous

Post #3
21685956 20 Sep 2022 15:48

If you did mean 3-state buffers etc. then go with Chip Fryer’s comments.

However If you are asking about trinary logic. Search Google for “trinary” or “ternary” keywords.
I see there have been ternary computers, but they obviously haven’t succeeded in the marketplace.

I found the Wikipedia entry for “three-valued logic” to be confusing at first glance. Perhaps it will make more sense to you.
#4 21685957 04 Oct 2022 09:01

Keonte45 Keonte45

Anonymous

Post #4
21685957 04 Oct 2022 09:01

Three-state logic is used in most registers, bus driver,flip-flops in the 4000 and 7400 series as well as many others. Three-state logic is commonly used internally in many ICs like microprocessors, RAM or memory as well as many chips used in peripheral devices.
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Examples of Three-State Logic Applications in Modern Digital Circuits

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