Difference between Buffer and Latch

Discussion in 'Electronic Basics' started by aman, Mar 21, 2005.

  1. aman

    aman Guest

    Latch is something once enabled holds the value for infinite time as
    long has it has Vcc and ground connections.

    Buffer is something which holds the value for finite time during which
    you need to read it. It can essentially be a part of sample and hold
    circuit.

    Please correct me if I am wrong in defining any of the two devices.
    aman, Mar 21, 2005
    #1
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  2. aman wrote:
    >
    > Latch is something once enabled holds the value for infinite time as
    > long has it has Vcc and ground connections.
    >
    > Buffer is something which holds the value for finite time during which
    > you need to read it. It can essentially be a part of sample and hold
    > circuit.
    >
    > Please correct me if I am wrong in defining any of the two devices.

    --------------
    You're wrong. A buffer merely strengthens a aignal so that it can
    be fanned out with integrity or drive a heftier device. Any amplifier
    is a buffer. It outputs a state only as long as the state persists
    on its input(s).

    A latch remembers the last state it was told to with another latching
    signal.

    -Steve
    --
    -Steve Walz ftp://ftp.armory.com/pub/user/rstevew
    Electronics Site!! 1000's of Files and Dirs!! With Schematics Galore!!
    http://www.armory.com/~rstevew or http://www.armory.com/~rstevew/Public
    R. Steve Walz, Mar 22, 2005
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  3. aman

    Rex Guest

    On Tue, 22 Mar 2005 05:42:10 GMT, "R. Steve Walz" <>
    wrote:

    >You're wrong. A buffer merely strengthens a aignal so that it can
    >be fanned out with integrity or drive a heftier device.


    Or polishes the floors.

    >A latch remembers the last state it was told to with another latching
    >signal.


    Or secures the doors.
    Rex, Mar 22, 2005
    #3
  4. aman

    neon VIP Member

    Joined:
    Oct 21, 2006
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    1,325
    A latch means just that it will hold that state until told to release or power down. A buffer is nothing else but a buffer to isolate one signal from its source or recondition it function to be used somewhere else.
    neon, Sep 7, 2009
    #4
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