CMOS Integrated DTMF Receiver/Decoder The CM8870PI provides full DTMF receiver capability by integrating both the bandsplit filter and digital decoder functions into a single 18-pin DIP.
CMOS Integrated DTMF Receiver/Decoder The MT8870PI provides full DTMF receiver capability by integrating both the bandsplit filter and digital decoder functions into a single 18-pin DIP.
