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AM26LS31: Output differs

Zoey Wu
Expert 5805 points
Part Number: AM26LS31

Tool/software:

hi team 

my customer has been using AM26LS31 and they found that the output of chips with the first silk is 3.8V and the second one is 4.9V . They want to know whether there are any problems?

  • 0
    TI__Guru 71790 points

    Hi Zoey,

    That doesn't sound like it should be a problem but just to verify do they have a scopeshot of the differences?

    Are they doing ICT and are worried this is an outlier?

    -Bobby

  • 0
    Guru 316220 points

    The die has changed, and now uses CMOS outputs, which can go nearer the supply rails. The outputs are still inside the limits specified by the datasheets (at least 2.5 V for high, or at most 0.5 V for low). This is not a problem.

    If this is an ICT, then adjust the high limit (in theory, anything between 2.5 V and 5 V would be OK).