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LTSpice "High-Z" output

Discussion in 'General Electronics Discussion' started by gorka, Feb 22, 2016.

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  1. gorka

    gorka

    3
    0
    Feb 22, 2016
    Hi everyone!

    I've got a logic AND gate and I would like to set "High-Z" value instead of the 5V value. I'm currently editing the Spiceline2 value with "Vhigh="High-Z" Vlow=0 Ref=1.5 Trise=5n Tfall=5n Td=5n".

    Thanks in advance,

    gorka
     
  2. Alec_t

    Alec_t

    2,844
    760
    Jul 7, 2015
    Vhigh sets the logic-high voltage. Shouldn't you be setting the Rhigh and Rlow values?
     
  3. gorka

    gorka

    3
    0
    Feb 22, 2016
    Thanks a lot for your answer. For the next time, where am I supposed to look for the answer?
     
  4. gorka

    gorka

    3
    0
    Feb 22, 2016
    Thanks a lot for your answer. For the next time, where am I supposed to look for the answer?
     
  5. eetech00

    eetech00

    95
    8
    Nov 17, 2014
    Hi
    Those are static params that are read before a simulation run. Instead, use a switch contact in series with the gate output. Control the switch with "enable" pin.
     
  6. Alec_t

    Alec_t

    2,844
    760
    Jul 7, 2015
    The built-in 'Help' (use the F1 key) actully helps ;).
     
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