Help with DTMF Decoder

Discussion in 'The Projects Forum' started by Tech05, Nov 21, 2012.

  1. Tech05

    Thread Starter New Member

    Nov 21, 2012
    1
    0
    Hi guys I have a huge problem with my project, the DTMF decoder chip CM8870PI when the chip turns on I get all LEDs lit, any suggestions?
     
  2. mlog

    Member

    Feb 11, 2012
    276
    36
    How about posting a schematic, since the chip itself doesn't have LEDs? We can't guess at what your circuit is supposed to be doing.
     
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