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SN74LVC1G123: Operation

Michiaki Tanii
Expert 4360 points
Part Number: SN74LVC1G123

Hi team,

 

Here is the inquire from our customer.

 

  • Please share the tolerance for each input / output pin.
  • How long can SN74LVC1G123 extent the Tw ?
  • The time between high output at Q and input signal at B
  • After passing Tw, how would SN74LVC1G123 operate if input high signal at B at turning off to low at output.

 

Thank you and best regards,

Michiaki

  • 0
    TI__Guru* 96591 points

    Hello Tanii-san,

    Michiaki Tanii said:
    Please share the tolerance for each input / output pin.

    What do you mean by 'tolerance'?  The voltage and current limits of the I/O pins are listed in the datasheet.

    Michiaki Tanii said:
    How long can SN74LVC1G123 extent the Tw ?

    The time of the output pulse is dependent on the external timing components selected. The resistance value is limited by leakage -- I would not recommend going above 1 Mohm for the timing resistor.

    There is no limitation on the capacitor size -- so there is no limitation on the output pulse length.

    Michiaki Tanii said:
    The time between high output at Q and input signal at B

    The delay between the B input and the output is listed in the datasheet switching characteristics tables.

    Michiaki Tanii said:
    After passing Tw, how would SN74LVC1G123 operate if input high signal at B at turning off to low at output.

    I'm not sure what this means.  The output triggers any time a rising edge is detected at B, which includes during the output of a pulse, during the transition of a pulse, or at any other time.