• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 248 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

PCA9306: Electrical characteristics

RAHUL SREERAJ
Prodigy 20 points

Part Number: PCA9306

Hi Team,

For doing the DC analysis we need to know the VIH(max), VIH(min), VOH(max), VOH(min), VIL(Max), VIL(min), VOL(max), VOL(min) voltages. 
Only typical values were available from the datasheet. Kindly share these details.
  • 0
    TI__Guru* 78111 points
    Hey Rahul,

    Max/min values in datasheets mean that the device undergoes test screens to ensure all devices sold meet the spec, this is why typical values are usually given in datasheet.

    "VOL(max), VOL(min) voltages. "
    VoL will basically be the VoL of the slave/master plus some small offset. This device does not redrive the signal so providing VoL max and min values do not make sense. The offset voltage is dependent on IoL and the reference voltage.


    "VIL(Max), VIL(min),"
    This device does not have internal logic that detects a low or a high so this characteristic does not make sense to have a ViL spec. If you have the device configured for level translation then you will see the output follow the input once you begin to pull below Vref1. I guess you can say ViL(max=min) is Vref1......

    "VOH(max), VOH(min)"
    This device does not generate a high signal, it only passes low signals. Also, I2C does not have a VoH spec so this spec would not make sense. The logic high is passively provided by the pull up resistor on the bus. VoH(max=min) if you need one would therefore be Vcc of the bus.

    "VIH(max), VIH(min),"
    This device does not have internal logic to look for a logic high. Side 1 and side 2 of the device will basically stop passing a low to each other at about Vref1. So ViH in a sense would be Vref1.

    Effectively, you can think of ViH as when the pass FET of this device goes into the cut off region (once either side goes above Vref1) and ViL as when the pass FET of this device goes into the linear region of operation (when either side drives below Vref1).

    I know this is not the exact answer you were looking for but The parameters you have asked for don't make sense to catalogue given how the device works.

    Thanks,
    -Bobby