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SN74LVC2G157 propagation delay variation between parts

Prodigy 90 points

Replies: 2

Views: 636

Hello,

are there any data available regarding the propagation delay variations between these chips. In an existing design there are three of them inserted in different lines of a communication interface an there maybe an issue due to signal skew in this application. The worst case assumption was 2ns propagation delay mismatch between  different SN74LVC2G157 working under same conditions. I need to proof if this is OK or if a higher value should be considered.

Best Regards

Martin Liese

  • Hi Martin

    The skew for this part should be no greater than 1ns between parts when driving the same load and at the same temp. Since you said they are in 3 different places the temp may vary some.   most liikely the skew will be less than 1ns even with a temp variation. 

  • In reply to Chris Cockrill:

    Hi Chris,

    thank you very much for the fast reply. Just in time to discuss the results of the circuit analyses with the customer. Good job, and valuable design/verification assistance!

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