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SN74ALVC164245: Low latency version recommendation

Rain Wang
Expert 1380 points
Part Number: SN74ALVC164245
Other Parts Discussed in Thread: SN74LXC8T245, SN74AXC8T245, SN74AVC8T245

Hi ti

    pls recommend Low latency version of SN74ALVC164245,  hope the latency time is less then 5ns，tks.

  • 0
    Guru 257450 points

    What are the specific voltage you're using?

    The fastest similar device is the SN74LXC8T245, but its maximum propagation delay is more than 5 ns.

  • 0 in reply to Clemens Ladisch
    Expert 1380 points

    Hi Clemens

        the voltage  is  3.3V and 1.8V

  • 0 in reply to Rain Wang
    Expert 1380 points

    Hi Clemens 

      It seems the SN74LXC8T245 Tpd is more than SN74ALVC164245， could your  recommend anyone else?

  • 0 in reply to Rain Wang
    Guru 257450 points

    The SN74ALVC164245 does not guarantee any propagation delay for these voltages. The LXC is optimized for higher voltages.

    Use the SN74AXC8T245.

  • 0
    TI__Prodigy 100 points

    Hi Rain,

    I've been recently testing various voltage translators as part of another project (including the AXC device) and I can confirm Clemens' response, the AXC's total propagation delay should always be lower than 5ns (within the datasheet's recommended conditions). The AXC recommendation could meet your requirement, however, if you wanted to minimize propagation delay, you might be interested in the SN74AVC8T245. 

    if you need a level shifter with propagation delay below 5ns, both recommendations would work; however, if you need the most optimized propagation delay for the 3.3V-1.8V application, please let us know, as we may have other solutions. 

    Regards, 

    Caden