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CD4013B: Logic Diagram Clarification

Jejomar Ildefonso
Genius 9040 points
Part Number: CD4013B

Hi Team,

Our customer reported a possible discrepancy on the CD4013B datasheet first page. They tried to simulate it and it does not work properly. Below is their simulation circuit.





 According to them, if the circuit is correct, then the logic diagram cannot be correct, since Q = Qn, while they should be always opposite.


Thanks in advance!


Kind Regards,

Jejomar






  • +1
    TI__Guru* 96862 points

    Hi Jejomar,

    Please let them know that we appreciate the error being pointed out to us. This is the original diagram:

    It looks like an extra inverter was added by mistake when the art was updated into our new system. I will mark this as a fix that needs to be made.