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The picture below shows the classical, theoretical decoder 4:16 with an "enable" function.

4-16 DECODER.jpg

The next picture shows construction of CTS 4.3 with 4 inputs, just like 4:16 decoder has.

Every of 4 outputs are connected on just 3 of 4 inputs in such way to make every possible combination, wich is totaly 4 in this case.

CTS  4-3-32 _5.jpg

With CTS we can make diferent decoders.

The formula for calculating the number of outputs in relation to the inputs is:

Bs = A! / (C! (A - C)!) * P^C

A =inputs

C = inputs combined in main outputs

P= number of poles (different physical states of lines, eg. + or -, RGB, etc.)

B = main outputs

Bs = sub-addresses (outputs)

We can conect to CTS-s B-side main adresses, some clasical 3:8 decoders.

They´ll serve like sub-addresses, wich in total increases the number of CTS output adresses.

 

02_CTS - 4.3_Decoder_page-0001.jpg

 

 

Picture below is just another way to display the same CTS as shown above but with less lines, contact points and built-in components.

The input pins of decoder now have 3 conditions, 2 of which are working states: +V and -V, and one non -working state: "off".

The decoder remains absolutely binary but does not require "enable" function and one more pin for that.

02_CTS - 4.3_Decoder_page-0003.jpg

 

To address one ouptut, in this case, we have just 3 of 4 inputs active at the same time. There are, also, less built-in components per output than decoder 4:16 has.

This means that we´ll have less energy consumption, less heat, simpler construction with less errors, more speed, and more outputs.

This CTS 4.3.32 can be easily upgraded to multiplexer - demultiplexer like shown bellow.

In this example, when multiplexer ( MUX ) input are at decoder output 7, than is output at "in/out" pin, or when demultiplexer ( DEMUX ) input is at "in/out" pin, than is the output at decoder output 7.

02_CTS - 4.3_Decoder_page-0004.jpg

 

To make an encoder, we need to put a diode on every paralell conected line of 32 inputs wich will separate one active input from other inactive inputs.

5.jpg

 

The truth table of CTS 4.3.32 - decoder show us fully compatibility with binary technology.

02_CTS - 4.3_Decoder_page-0006.jpg

 

 

 

Here are other comparisons between CTS and decoder wich in first table show how CTS has much more outputs.

In the second table, when amount of inputs and outputs of CTS and decoder remain the same, is shown how many CTS has fewer built -in transistors.

02_CTS - 4.3_Decoder_page-0007.jpg
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