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PCA9306: tPHL tPLH

Amy Luo
Expert 6895 points

Part Number: PCA9306

Hi team,

The delay parameter of PCA9306DUCR is related to CL. Does it also have much to do with the TR and TF of the input pulse signal?

Best Regards,
Amy

  • 0
    TI__Guru* 79531 points

    Hi Amy,

    It shouldn't have that much relationship with the rise and fall times (there is dependency on this though) but rather the reference voltage on the enable pin. If Enable voltage = ViH of the input voltage AND both sides of SDA/SCL are the same voltage or lower, then you would get similar prop delay times. Since this isn't the case in most applications, the prop delay is usually much larger (100ns +).

    I assume your question is related to the original poster's here:

    -Bobby