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SN74LVC8T245: Please recommend a PN with better rise time spec [0.5-2 ns]

Yue TANG
Expert 8705 points
Part Number: SN74LVC8T245

Hi,

Please recommend a PN which can meet below SPEC, My customer try to process the light sensing signals. they used to use SN74LVC8T245. thanks.

1. Signal frequency :50-100Mhz

2. Signal rise time 2-5ns, so the device need to support 0.5-2ns level.

 

  • 0
    TI__Guru 62180 points
    Hi Yue,

    What are the voltage levels being translated? What are the loading conditions at the output?

    We cannot guarantee the operation beyond the datasheet spec, but with lighter cap loads, the rise time and hence the prop delay can be faster.
    however, the 0.5ns is too low prop delay usually for a switch type of device and not buffered devices like the SN74LVC8T245.
  • 0 in reply to ShreyasRao
    TI__Expert 8705 points
    Thanks for the reply.
    The voltage of input signal is 3.3v and the output is 5v. the load is a laser. I understand the 0.5ns may be tough. please suggest the best we can do . thanks.
  • 0 in reply to Yue TANG
    TI__Guru 62180 points
    Hi Yue,

    As i suggested earlier, the SN74LVC8T245 is the best solution from our side I could suggest you.

    Please let me know what the customer decides to go with.