Integrated Circuits

Discussion in 'General Electronics Chat' started by SilverBack, Jan 28, 2005.

  1. SilverBack

    Thread Starter New Member

    Jan 28, 2005
    I'm really enjoying this site. I've had a Radio Shack electronics lab for a while and I'm really picking up on the whole electronics thing. I've got a question though, and I must have either overlooked the answer or it's missing.

    I would like to know if anyone can tell me how to tell what a numbered IC does. I haven't found any kind of reference on the Internet that defines certain ICs: i.e. what exactly does a PM212AQ/LM339N do?

  2. Apollocomplex

    New Member

    Jan 25, 2005
    The chip LM339N is a Quad voltage comparator, you basically just go to yahoo and search, I usually ignore whatever is in the front. Not ask me why but i just do. I guess as you do use more IC chip, you get to know how to search them better..
  3. dragan733

    Senior Member

    Dec 12, 2004
    I think PM212AQ is a designation interne of the producer of the circuit integrated. I think P means: plastic package, M - case M, the number 212 means year an week of the production, 02 (2002) and 12 week of 2002 year of production of the circuit integrated. AQ , I think that is about operating temperature range of the circuit integrated.
    N at LM339N means DIP - Dual in line package