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Have I been sent the right chips?

Discussion in 'Electronic Basics' started by h, May 21, 2004.

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  1. h

    h Guest

    Hi,

    I ordered some 4N25 opto-isolators from Maplin, expecting 6-pin DIPs, but
    I've received 8-pin DIPs instead, each marked

    12C508A
    04/P08R
    (M) 0337

    Are these the same as a 4N25, and if so, which pair of pins do I ignore? Or
    have I been sent the wrong part?

    (cpemma (in this NG) kindly pointed me at a circuit to drive a EL inverter
    from my PC's HDD LED pins. Circuit is at
    http://www.mexbro.co.uk/bit/optobooster.gif .)

    Any help appreciated; google is a little too forthcoming but not very
    enlightening.

    Cheers,

    h
     
  2. That sounds like a PIC microprocessor, to me.
     
  3. John Miller

    John Miller Guest

    Yes, what you have are microprocessors, not optos.
     
  4. Rich Grise

    Rich Grise Guest

    Have you asked the people that you got them from? Because whatever
    those chips are, they're not 4N25s. 4N25s would have "4N25" on them.

    Cheers!
    Rich
     
  5. As said before they are not opto isolators but certainly if they came at the
    4N25 price they would be a bargain !!
    Just get some more 4N25's and you are well in front !!
     
  6. h

    h Guest

    I ordered some 4N25 opto-isolators from Maplin, expecting 6-pin DIPs,
    but
    Cool! By my reckoning I'm about UKP 1.12 up on the deal...

    Thanks for the help, folks :)

    h
     
  7. veli

    veli Guest

    They are PIC 8-Pin, 8-Bit CMOS Microcontrollers chips from www.microchip.com
    and can be used for modification of Play Station PSX, PS2 etc. Cost around
    USD 1.60. Better returm them if you don't have any use.

    //veli
     
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