SN74LV164A: Need Spice mode of SN part.

Sourabh Shete

Prodigy 30 points

Part Number: SN74LV164A
Other Parts Discussed in Thread: SN74HCS164, LM555

Tool/software:

Hello,

I need Spice model of SN part : SN74LV164A

Regards,

Sourabh Shete

9 days ago

0 Albert Xu1 6 days ago

TI__Mastermind 23805 points

Hi Sourabh,

Our clocked devices do not have an Spice models.

0 Sourabh Shete 5 days ago in reply to Albert Xu1

Prodigy 30 points

Hi Albert,

Unfortunately, I am unable to get EVM, due to unavailability/shortage. Is there any way to quickly evaluate this IC?

0 Clemens Ladisch 5 days ago in reply to Sourabh Shete

Guru 271320 points

What is the application? (Basically the only reasonable application is controlling LEDs, because when writing data into the shift register, the shifting bits are directly visible at the outputs. See the application curve in the SN74HCS164 datasheet.)

0 Sourabh Shete 5 days ago in reply to Clemens Ladisch

Prodigy 30 points

Application is Sequential turn Animation. I wanted to simulate the IC along with IC555 timer. I am able to get IBIS model for SN74HCS164, however Pspice for TI does not accept IBIS model.

0 Clemens Ladisch 5 days ago in reply to Sourabh Shete

Guru 271320 points

IBIS models do not describe the logic function; the specify only the electrical characteristics of the I/O buffers.

You can simulate such a shift register with the components it contains:

0 Malcolm Lyn 5 days ago in reply to Sourabh Shete

TI__Mastermind 18080 points

It's very difficult/impossible to create proper DFF components in PSPICE, hence why we do not provide PSPICE models for any of our DFF/latches/shift registers (to my knowledge). I would note that our LM555 timer doesn't have a SPICE model either.

If you are willing to use ngspice it is not only possible but much easier to perform these types of digital simulations.

Best,

Malcolm

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SN74LV164A: Need Spice mode of SN part.