hex inverter

Discussion in 'General Electronics Chat' started by kuxz2008, Nov 16, 2009.

  1. kuxz2008

    kuxz2008 Thread Starter Member

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    i would like to know is IC SN74F04 same as IC 74LS04 ?
    does the above 2 ic uses same or different voltage?

    and is there any similiar IC for L293D with the same function?
  2. beenthere

    beenthere Retired Moderator

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    It depends on how you define "same". The logic functions are identical. 74Fxx logic is long obsolete. It was designed to allow faster operation than 7400 logic, but uses a lot more power. It's also pretty noisy, as the output stages permit a bit of shoot-through when switching. a 74Fxx IC will use almost an order of magnitude more power than 74LSxx. They both run on 5 volts Vcc.

    Get data sheets to see exact power and speed differences.
  3. SgtWookie

    SgtWookie Expert

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    They both require +5v for Vcc. 4.5v is the absolute minimum, 5.5v the absolute maximum.
    I don't know what you are planning on doing, except that it sounds like you may be attempting to construct an H-bridge out of inverter ICs.

    You may find these pages helpful for hobby robotic H-bridge drivers:
    http://www.solarbotics.net/library/circuits/driver.html
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