Hello:

Can anyone tell me where I can find a spice library for 4000 series cmos?

Thank you

 

LTspice User's Group at groups.io - free to join.

Also​

Bordodynov's wiki page --> For LTspice users. Libraries of models, examples, etc (ltwiki.org)
The first hyperlink is a 20 Meg .zip file with lots of goodies including the library you are looking for.

 

LTspice User's Group at groups.io - free to join.

Also​

Bordodynov's wiki page --> For LTspice users. Libraries of models, examples, etc (ltwiki.org)
The first hyperlink is a 20 Meg .zip file with lots of goodies including the library you are looking for.

Thank you!

 

LTspice User's Group at groups.io - free to join.

Also​

Bordodynov's wiki page --> For LTspice users. Libraries of models, examples, etc (ltwiki.org)
The first hyperlink is a 20 Meg .zip file with lots of goodies including the library you are looking for.

The symbols are in lib/lib/sym/ZZZ/LOGIC/CD4XXX but there must be some .sub files somewhere
but I can't find them. Any ideas?

 

Ignore post #4.

Per Bordodynov's instructions, I have placed his symbols and sub circuits in the following folders.
Can anyone tell me what my include directive should be. "include cd4000.lib" does not work.

This is where the symbols are.
c:\users\mike\AppData\Local\LTspice\lib\sym\ZZZ\LOGIC\CD4XXX

This is where the sub circuits are.
c:\users\mike\AppData\Local\LTspice\lib\sub\SUB

 

Where is the help that I requested! This stuff does not work!

 

Hi maker,
I know it's a side shot, but please post your asc file, it may help me to explain the problem.

E.

 

Hi maker,
I know it's a side shot, but please post your asc file, it may help me to explain the problem.

E.

Hi E. Here she be. My circuit is nonsense, I was just trying to get spice to find the components in the library.

 

hi maker,
I get the same error using your asc file.

Will try to locate the problem and get back if I have an answer.

I assume you are using Windows
E

 

Hi maker,

I did this action to replace the symbol in your asc file, it then works.

F2 > ZZZ > LOGIC > CD4xxx > cd40001b

Try that action and run this asc file.

It looks as though you have a 'path' problem?
E

 

Hi maker,
I cannot make it work with CD4000_v1.lib.

Perhaps @Bordodynov can suggest a solution.
E

 

Hi maker,

I did this action to replace the symbol in your asc file, it then works.

F2 > ZZZ > LOGIC > CD4xxx > cd40001b

Try that action and run this asc file.

It looks as though you have a 'path' problem?
E

Yes Windows 11. Still doesn't work for me. Yes I am sure it is a path problem but I have tried everything
that I can think of. In post #5 I indicated where the symbols and sub-circuits reside. Maybe Bordodynov
could assist us.

 

hi @maker_2023

This guy had problems with CD4000_vb.lib

E
https://acidbourbon.wordpress.com/2021/06/30/using-cd4000_v-lib-in-ltspice/

 

That acidbourbon produces a square symbol which is ridiculous. This shouldn't be difficult.

maker

 

That acidbourbon produces a square symbol which is ridiculous. This shouldn't be difficult.

maker

I resolved it myself. Bordodynov's instructions were incorrect!

 

Hi marker,
Could you post the error you found with @Bordodynov instructions, it could help others.

E

 

In post #10, how can the simulation magically produce an output current of almost 9mA when the supply voltage and LED voltages are unknown? The output current of a CD40xx depends on the supply voltage.

 

Hi agu,
If you look more closely at post 10, you will see it uses the standard CD4000 set, in which the voltage is declares as 5V.
Not the CD4000_v in which the Vcc aka vdd has to be specified.

E

 

In post #10, how can the simulation magically produce an output current of almost 9mA when the supply voltage and LED voltages are unknown? The output current of a CD40xx depends on the supply voltage.

The supply voltage is specified as one of the symbols' attributes by default (VDD=5), when using the CD4000.lib library.
What is also not displayed is the voltage output level which is extremely low (millivots).
A real part probably would have been damaged.

 

With a 5V supply, the datasheet for a CD4001B shows a typical output of only 4.2mA into a dead short and less into an LED: