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ISO3088 / Distribution data of tr, tf

S.Satoshi
Guru 21685 points
Other Parts Discussed in Thread: ISO3088

Hi,

Our customer requests us to provide min/max value of output signal rise and fall time (tr, tf) for ISO3088. I understand that there is no min/max of tr and tf so you can guarantee it. Then can you provide distribution data or design spec if you have? Please email me directly if you can't disclose it on E2E.

Your response will be appreciated.

Best Regards,

Sonoki / Japan Disty

  • 0
    TI__Mastermind 21801 points

    Hi Satoshi-san,

    The datasheet gives both the typical and the maximum values (7ns and 15ns respectively), on page 3. In terms of the minimum value I was able to locate the test data from ATE and the minimum value for 30 units at 3 voltages 94.5, 5.0, and 5.5) and 3 temperatures (-40, 25, and 85°C) was 4.8016 ns. Like you said this is just a purely measured value and is not a guarantee. The datasheet limits have 6 sigma values built in.

    Thanks,

    John

  • 0 in reply to John Griffith
    Guru 21685 points

    Hi John-san

    Thank you for your comment, but now I'm talking about tr and tf of receiver output. It has no min/max as below. Can you provide any information for this?

    Best Regards,

    Sonoki

  • 0 in reply to S.Satoshi
    TI__Mastermind 21801 points

    Satoshi-san,

    I apologize for the misunderstanding and the delay in getting back to you. Looking at the same data set I was able to find the min and max values for the receiver rise and falls times:

    • Min Fall time: 0.8919ns
    • Max Fall time: 2.2707ns
    • Min Rise time: 0.7661ns
    • Max Rise time: 1.6691ns

    The slow fall time happened at the high temp low voltage corner.

    Thanks,

    John