Difference between ic555 and ic1555

Discussion in 'General Electronics Chat' started by Electro-learner, Sep 18, 2015.

  1. Electro-learner

    Thread Starter New Member

    Mar 18, 2015
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    I thought that we have only one ic 555 timer.
    But recently when I looked at the circuit diagram of a 555 timer, it said "IC1 555".

    Are both different?In what sense?And can I use an IC555 timer in place of IC1 555?
    Both seem to have similar functions in the circuit diagram(as an astable multivibrator).
     
  2. dannyf

    Well-Known Member

    Sep 13, 2015
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    IC1 555 - IC555 = 1.

    :)

    Without knowing if you are talking about schematic symbols or part numbers, it is impossible to tell.
     
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  3. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
    Hello,

    The IC1 will be the designation for the first IC in the schematic.
    The 555 can be bought in several versions.
    The bipolair version can output more current as the CMOS version.
    The LM555 / NE555 / SA555 are bipilair versions.
    The LMC555 is a CMOS version.

    Bertus
     
  4. tom_s

    Member

    Jun 27, 2014
    285
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    and depending on how you use it, they can sing, shake, rattle and roll
     
  5. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
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    Or charge batteries...
     
  6. DerStrom8

    Well-Known Member

    Feb 20, 2011
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    Really need some pictures to answer this.

    MICREL makes a part called the MIC1555 that is a one-shot timer. I expect in your situation, however, you are reading the designator as well as the part number, rather than just the part number. There is no "IC555" part number, as to my knowledge no companies prefix their part numbers with "IC". Usually a 555 timer is preceded by an "NE" (Texas Insturments), "LM" (Fairchild), or "SE" (STMicroelectronics).
     
  7. #12

    Expert

    Nov 30, 2010
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    What DerStrom said. There is no such part number as IC1555 just as there is no part number Timer555.
    You simply assumed a (component designator) label was a part number.
     
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  8. Electro-learner

    Thread Starter New Member

    Mar 18, 2015
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    Thanks for all of your replies.I'm satisfied with the responses.
     
  9. Electro-learner

    Thread Starter New Member

    Mar 18, 2015
    11
    0
    Good way to mean "difference between"
     
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