IC Question

Discussion in 'General Electronics Chat' started by rkrutz, Dec 28, 2009.

  1. rkrutz

    Thread Starter New Member

    Dec 2, 2009
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    I was wondering if anyone new which ic had the house codes of MC14528BCP and FFNC9051. It has 8 legs on each side. From my research I believe it ay be a xr2240, but I'm not sure. Thanks for your help.
     
  2. SgtWookie

    Expert

    Jul 17, 2007
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    An MC14528BCP is a Motorola part number for a 4000-series 4528 CMOS dual monostable multivibrator. Other manufacturers might use CD or HEF instead of MC1 for a prefix.
     
  3. rkrutz

    Thread Starter New Member

    Dec 2, 2009
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    Ok thank you. So do you know where i could find a xr2240 programmable timer or something similar because all the places I've looked at online don't carry them?
     
  4. Papabravo

    Expert

    Feb 24, 2006
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    That part number is for a part originally made by Exar. The company does not exist anymore and there were seldom any second sources for these parts. eBay is your best bet for the XR2240.

    A CD4040 or CD4060 may get you what you want.
     
  5. rkrutz

    Thread Starter New Member

    Dec 2, 2009
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    Ok thanks for your help. I'll check some local stores and see if they have any. Its just I got a book from the 80's and some of the projects call for it. Does anyone know if there is something similar available in today's market?
     
  6. VoodooMojo

    Active Member

    Nov 28, 2009
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    Last edited: Dec 29, 2009
  7. Papabravo

    Expert

    Feb 24, 2006
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    One more time with feeling. A CD4040 or a CD4060 are similar and available in today's market. Do I have to repeat myself or did the message get through?

    BTW I'm amazed that LM (National Semiconductor) and UA (Fairchild) second sourced this part. Given the age of the datasheet from National (1990), I'd be surprised if they corresponded to orderable parts. Digi-Key has none.
     
  8. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    Exar would probably be surprised to find that they do not exist.:D
    You are right about the fact that they don't make the cool old parts now.:(
     
  9. SgtWookie

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    Jul 17, 2007
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    "Reports of my demise have been greatly exaggerated!"
    ---- Samuel Clemens (aka Mark Twain)
     
  10. Ron H

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    Why didn't I think of that?:p
     
  11. VoodooMojo

    Active Member

    Nov 28, 2009
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    I know, thats why I use the 4060.
     
  12. Papabravo

    Expert

    Feb 24, 2006
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    It is the same name, but it sure looks like a different company, with no archival information on its legacy products, and new products with prefixes different than 'XR'. Are you sure that it did not go away for a while until someone resurected the name, Phoenix like, from the ashes.

    Guess not. It is now a fabless company after all the aquisitions, and Rohm no longer has any stake in it.
     
    Last edited: Dec 29, 2009
  13. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    Resurrected, like Fairchild Semiconductor? I wondered the same thing, until I read on their web site that they have been around for nearly forty years.
    Many(most?) companies drop archival info on their legacy products after production has been stopped for a number of years.
     
  14. Papabravo

    Expert

    Feb 24, 2006
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    I guess when a company drops off the purchasing radar screen it might as well cease to exist.
     
  15. dmerrett

    New Member

    Mar 13, 2010
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    If you would like a UA2240 (from texas instruments) I have one. Send me a message and I will post it to you.
     
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