Drive a load from cmos chip

Discussion in 'General Electronics Chat' started by rpkamins, Jul 13, 2011.

  1. rpkamins

    Thread Starter New Member

    Jul 13, 2011
    2
    0
    Hi everyone. I'm new to this forum so I'm sorry if I posted something incorrectly. Just let me know. My question is this: I'm looking for a way to drive a small load from the outputs on a cmos serial to parallel chip. I'm trying to make a controller for a project I'm working on and I need to be able to drive somewhere between 500 and 600mA using a 16 bit serial to parallel converter. The idea is to feed in 16 serial bits and turn on any of the 16 outputs. Any advice? Thanks.
     
  2. #12

    Expert

    Nov 30, 2010
    16,257
    6,757
    Use transistors to amplify the current. Bipolar, mosfet, depends on what you have and what you need.

    Posting a datasheet for the chip and a drawing of the circuit helps a lot. To do that, you use the "go advanced" button and "manage attachments" to upload material.
     
  3. seecumulus

    Member

    Jul 13, 2011
    31
    1
    Most CMOS 4000 Series Components only have the Fan Out of 2 TTL Loads.
    CMOS driving 500 ma - I believe is not capable in the normal 4000 series.

    CMOS driving 25 ma is normally considered a high load driver for CMOS.

    One component that may increase your CMOS Drive is the MIC 4223, 4224, 4225 components.
     
  4. rpkamins

    Thread Starter New Member

    Jul 13, 2011
    2
    0
    It appears that the mic series is exactly what I was looking for. I can drive up to 3 or 4 amps with the 4225 chip. Thank you very much for the prompt replies and I will give it a try.
     
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