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TINA Simulation model for "LSF0102DCUR "?

Vishal A
Intellectual 300 points
Other Parts Discussed in Thread: LSF0102, PCA9306, TCA9517

Hi,

Is there any Simulation schematic or symbol  for the part "LSF0102DCUR" . I have searched in the TI website but could not find any.I would like to know the circuit's operation by simulating. Please let me know if there is any way to do so!!

Regards,

Vishal

  • 0
    TI__Genius 16510 points

    Hello Vishal,

    The LSF0102 has an IBIS model, but does not have a HSPICE model. 

    However, the PCA9306 (a very similar device) has an HSPICE and an IBIS model: 

    You can find this by going to the product folder and clicking on the tools & Software tab.

  • 0 in reply to Jonathan Valdez
    Intellectual 300 points

    Hi Jonathan,

    Thank you for the response!!

    We have a circuit where we have a requirement of cascading level translator "LSF0102DCUR" for I2C level translation. It is connected in such a way that the input SCL/SDA line from AARDVARK  is level translated from 3.3V to 2.5V. This 2.5V SCL/SDA line is again level translated from 2.5V to 3.3V and it is again level translated from 3.3V to 2.5V as shown in the attached block diagram for better understanding.

    We would like to know whether this cascading of level translators Works fine? Kindly provide your suggestion!

    Regards,

    Vishal. A

  • 0 in reply to Vishal A
    TI__Genius 16510 points
    The thing to note about these devices, is that they are not true buffers. AKA: the collective sum of currents will be summed together. This means that you might see a large amount of voltage drops across the LSF parts if you have any of them.

    The size of your tree concerns me for this type of device. The tree looks very large and If you have several devices, you could very well have an issue with too much IOL current.

    You might want to consider a buffered translator such as TCA9517, which will actually isolate both sides electrically. The only note is that B-sides of this device cannot be connected together, but you can have A and B sides connected together.