confusion

When someone says they have a 4 by 12 mux what does that mean?

I understand mux to have many inputs with one single output so what does a 4x12 mean?

Just multiple 1x4 on a single chip or something??

 

It means 4 coded inputs directing the signal to one of 12 outputs.

 

It means 4 coded inputs directing the signal to one of 12 outputs.

I have no idea what you mean

 

Ok sorry, I'm thinking de-mux.

1 data input
4 select lines
16 selectable outputs

 

I'm not sure do they have any components included two functions and combine to one package, but you can use 74HC153 and 74HC4067 to complete the function.

 

So the answer is?

If someone says 4x12 mux what does that mean?

 

4x12 mux means seems like 4 sets of 12 outputs multiplexer, but it didn't mention how many inputs.

It could be 4 sets of 1 input to 12 outputs multiplexer.

 

Lol great well glad everyone is as confused as I am

 

confusion

When someone says they have a 4 by 12 mux what does that mean?

I understand mux to have many inputs with one single output so what does a 4x12 mean?

Just multiple 1x4 on a single chip or something??

It's missing some context and so you are going to have a hard time getting a definitive answer.

My best guess is that it means you have four input channels that are each twelve bits wide. You would then have two select signals that would chose which of the four channels to route to the output.

 

Where did you get those names? (4 by 12 mux, 4x12)

You can see that the description very clear as 74HC153 and 74HC4067.

 

Certainly a great deal of information is missing, including the context. All the responses so far have been best guesses, at best.
So do you need a multiplexer? or are you trying to discover what a label on a section of a drawing means? Or something else? With more information you can get a useful answer.

 

My best guess is that it would use a 4 bit address to select a single data bit or stream from 1 of 12 inputs.

Do you have a part number of a chip like that? The data sheet would tell for sure.
This chip uses a 3 bit address to select 1 of 8 inputs.
http://www.ti.com/lit/ds/symlink/sn74ls151.pdf
The 74LS150 uses a 4 bit address to select 1 of 16 inputs.