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Logic Chips

Discussion in 'Electronic Design' started by Ogre, Feb 14, 2005.

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  1. Ogre

    Ogre Guest

    I'm trying to build a circuit involving the 74AC04 Hex Inverter, but
    can't find any. I've found 74LS04 and 74HC04, but unsure which closest
    matches the AC. Any help appreciated!
  2. Tim Wescott

    Tim Wescott Guest

    Look for the 74ACT, also. The 74AC is faster than the 74HC and 74LS --
    if it needs to be blazingly fast you may need a 74AS. Look at your
    application, look at data sheets, see if proposed substitutes are fast

    Digi-Key has them in stock, if you're in the US.
  3. Chris Carlen

    Chris Carlen Guest

    Why 74AC04? They are evil fast. But if that's what you need...

    has them in all shapes, sizes, and manufacturers.

    Consider also the AHC family. A little tamer.

    Good day!

    Christopher R. Carlen
    Principal Laser/Optical Technologist
    Sandia National Laboratories CA USA
    -- NOTE: Remove "BOGUS" from email address to reply.
  4. Ken Smith

    Ken Smith Guest

    AHC has a lower drive current. Than the AC and ACT parts.

    If you don't need the speed and the drive I'd suggest you try not to
    design AC parts in. It looks like they may be on the fade. Fairchild's
    web site no longer has a direct link to them in the logic page and shows
    them as "mature". "Mature" is what makers call a product when they've
    lost interest in it but will still sell it as long as it makes money.

    BTW: I'd really like ACT speed in an unbuffereed ACT04. Has anyone seen
  5. Rich Grise

    Rich Grise Guest

    I don't think there can be such a thing as an "unbuffered" ACT chip. The
    "T" means "TTL compatible", which is most definitely _not_ unbuffered!

    Now, ACU would be something to see! Although, there might be HCU chips.

    Good Luck!
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