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SN74HC193: PSpice model for the 74HC193 to use with PSpice for TI?

MARCO TREMBLAY
Prodigy 10 points
Part Number: SN74HC193

Where can I find the PSpice model for the 74HC193 to use with PSpice for TI?

How do we add it to the libraries?

Thanks

  • 0
    TI__Mastermind 29295 points

    Hi Marco,

    Unfortunately for some devices such as counters, we do not provide PSPICE models due to them not being able to be simulated correctly. 

  • 0
    Prodigy 10 points

    This is surprising and disappointing when we were using logic simulators in the 90's that could do it. 

    Can't you have a "logic" section in PSpice where the simulator does not worry so much about the internal electrical model but only the I/O characteristics?

  • 0 in reply to MARCO TREMBLAY
    TI__Mastermind 29295 points

    Hi Marco,

    Are you looking for an IBIS model instead? Let me look into this and I will get back to you. 

  • 0 in reply to Albert Xu1
    Prodigy 10 points

    Would the IBIS run with the rest of the TI PSpice circuit?

  • 0 in reply to MARCO TREMBLAY
    Guru 295240 points

    No; IBIS describes only the electrical characteristics of the input and output buffers.

    SPICE-based simulators model the analog properties of circuits and have problems with digital logic. Some have workaround with built-in logic gates, but there are no counters. You would have to use a logic simulator for that.

    If you want to simulate both the counter logic and the analog properties of its I/Os, then you must use two simulators.