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LM74700-Q1: Enable VIH, VIL, & VHYST

Andy Snawerdt
Intellectual 2280 points
Part Number: LM74700-Q1

Hi Team,

For the LM74700-Q1, the enable VIH_MIN & VIL_MAX we specify in the EC table overlap:

I understand that the enable pin has built in hysteresis, also defined above which would prevent this overlap from ever occurring in reality, however even then, the VHYST_MAX value is larger than the VIH_MIN. Therefore going strictly based off datasheet worst case values, it seems we could theoretically receive a device with a VIH of 1.06V, and a VHYST of 1.35V, putting the VIL level at -0.29V which doesn't seem quite right. Can someone clarify how these values should be viewed?

Thanks!

Andy

  • 0
    TI__Guru 57737 points

    Hi Andy,

    We guarantee that all the parameters are within their respective Min and Max values. So, in the example that you have taken, you will not encounter a part with V(EN_IL) = -0.29V.

    So, if you have a part with V(EN_IH) = 1.06V, the worst case V(EN_IL) you would find for that part is 0.5V. So, in this case the V(EN_Hys) will be only 0.56V