IC prefixes

Discussion in 'Off-Topic' started by GopherT, Jan 11, 2016.

  1. GopherT

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    The LM series of chips is rumored to be an acronym for Linear Monolithic.

    A recent thread (where prefix was confused) got me wondering what other common profiles might stand for (general or company-specific).

    TL,
    LF,
    NE,
    OPA (I assume: OPerational Amplifier)
    Others?

    Resent thread with confused prefix
     
  2. #12

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    LM National Semiconductor Linear Monolythic
    LF...National Semi, Linear/fet
    NE = Signetics
    SE is also Signetics
     
    Last edited: Jan 11, 2016
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  3. Papabravo

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    SN = Texas Instruments
    CD = RCA 4000 Series CMOS
    TIP = TI Power eg TIP34C, TIP121, etc.
    μA = Fairchild Analog, eg. μA741
    AD = Analog Devices
    μPD = NEC
    i = Intel, eg. i8085
    MK = MOSTEK
    MC = Motorola
     
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  4. Papabravo

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    Am = AMD, eg. Am9511
    AT = Atmel, eg ATMega128, AT89C51CC03
    Z = Zilog, eg. Z80, and Z8
    VN, L = ST Microelectronics, VN340, L298
     
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  5. RichardO

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    PIC = Programmable Intelligent Computer, General Instrument (now Microchip)
    LH = Linear Hybrid ? , National Semi. (This was true for LH0032 and LH0033 but is not true for LH0026. The inconsistency drives me crazy).

    μA = Fairchild Analog, eg. μA741:
    I have always assumed this stood for Micro Analog or Micro Amplifier.
     
  6. JoeJester

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    I thought PIC was Peripheral Interface Controller.
     
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  7. GopherT

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    Which brings us to the MC68821 -where MC is apparently for Motorola
    And the HD68821 - where HD is Hitachi

    (I have a whole box of 68821 if anyone is interested).
     
  8. Brevor

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    JoeJester is correct.
     
  9. GopherT

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    Maybe both are true...

    According to Wikipedia,

    PIC and PICmicro are registered trademarks of Microchip Technology. It is generally thought that PIC stands for Peripheral Interface Controller, although General Instruments' original acronym for the initial PIC1640 and PIC1650 devices was "Programmable Interface Controller".[4] The acronym was quickly replaced with "Programmable Intelligent Computer".[5]
     
  10. bertus

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  11. JoeJester

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    Computer, as defined by Merriam-Webster's dictionary, is appropriate. Intelligent is appropriate, although I probably wouldn't have chosen that word. Programmable definitely fits.
     
  12. Papabravo

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  13. RichardO

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    There is no link to the 1976 General Instrument data book in the Wikipedia entry. I would be very surprised if the name changed in 1 year.
    See here for the 1977 info :
    http://www.rhoent.com/pic16xx.pdf
     
  14. RichardO

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    Here is the list so far -- with some guesses as to what the prefixes stand for after the "?":
    TL = ? TiLinear, Texas Instruments
    LF = Linear/FET , National Semiconductor
    OPA = ?OPerational Amplifier
    LM = Linear Monolithic, National Semiconductor
    NE = ?, Signetics
    SE = ?, Signetics
    SN = ?,Texas Instruments
    CD = ?, RCA 4000 Series CMOS
    TIP = TI Power eg TIP34C, TIP121, etc.
    μA = Micro Array, Fairchild eg. μA741
    AD = Analog Devices
    μPD = ?, NEC
    i = Intel, eg. i8085
    MK = MOSTEK
    MC = ? Micro Circuit, Motorola
    Am = AMD, eg. Am9511
    AT = Atmel, eg ATMega128, AT89C51CC03
    Z = Zilog, eg. Z80, and Z8
    PIC = Programmable Intelligent Computer, General Instrument (now Microchip)
    LH = ? Linear Hybrid, National Semi. (This was true for LH0032 and LH0033 but is not true for LH0026. The inconsistency drives me crazy).
    VN, L = ST Microelectronics, VN340, L298

    LT = Linear Tech., Linear Technology
     
  15. GopherT

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  16. Papabravo

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    And at least one callsign.
     
  17. atferrari

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    Not sure where but National Semiconductors had a full detail of their prefixes. Recall seeing them in probably their last paper edition. Went there because of the LMF100 filter.
     
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