Help with DTMF Decoder

Thread Starter

Tech05

Joined Nov 21, 2012
1
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?
 

mlog

Joined Feb 11, 2012
276
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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