Hello guys, I would like to know if it is possible to identify your CI is a fake?

In my case it's a Texas CD4093. I would like to know if through the numbers above the CD4093BE writing it is possible to obtain what information?

 

I would like to know if it is possible to identify your CI is a fake?

I assume you mean IC.

In my case it's a Texas CD4093. I would like to know if through the numbers above the CD4093BE writing it is possible to obtain what information?

Examine the package for irregularities. The texture of the case should be the same on top and bottom.

Examine the pins. They should have the correct angle and shouldn't have any pitting on the shoulders.

Examine the markings. The TI logo should look like a good facsimile of Texas and the lowercase 'i' should be dotted. Some TI logos sometimes have a boy instead of a letter. Is the lettering uniform?

Did the part come from a reputable seller?

Post a clearly focused picture if you want our opinions.

 

This CD4093BE does not work correctly.

 

This CD4093BE works correctly

 

This CD4093BE does not work correctly.

This CD4093BE works correctly

So why are you asking for ways to determine if it was counterfeit?

The picture is too poorly focused to be helpful:

 

Part diagram.

Solder less breadboard.

Put the part in the breadboard, connect some LEDs+resistors on the outputs to see high/low. Pull the inputs high and low and see what happens.

 

An HP Logic Comparator would allow you to test it in circuit and at speed:

I have one, but never had the need...

It works by putting a known good chip on a card, clipping the logic clip on the DUT, and exercising the inputs of the DUT.