Output voltaje thersholds versus Source Current

[DiegoRC]

Hello.

I need to know the logical digital output thresholds of the S32K1xx series, based on the current supplied for the range of VDD = 3.3V.

Already consulted the Table 17- Datasheet (S32K-DS) but they are only specified for certain currents (3mA-3.5mA to VDD = 3.3V) , as well as the Figure 8 - AN2434 that only specifies it for VDD = 5V.

[davidtosenovjan]

Specified Voh/Vol is min/max value when sourcing/sinking current is Ioh/Iol as specified.
V-I characteristic for logic 1 (output) can estimated by linear approximation between points and <Ioh;Voh> and <0mA ; VDD>. The same way you can estimate V-I characteristic for logic 0.

[seanli_study]

Hi David：

     Does the S32K1 have the threshold data for VOL and VOH? If it depends on the sourcing/sinking current? Can VOL_max be calculated through the formula of MOS transistor's resistance * sink maximum current? Can we obtain this data?

[DiegoRC]

Hello. Thanks for the support.

For an estimate it seems valid to me. But not for a "worst-case analysis" (as is my case).

Is it the only theoretical way to get the thresholds?

Is there no such data?

[davidtosenovjan]

How it is defined (i.e. minimum current at defined voltage) it is basically worst case.

You can also use IBIS model we are providing.