WizAps CM8870 IC for replacement or DIY Projects,DTMF RECEIVER - 2 Pieces Electronic Components Electronic Hobby Kit

The CM8870 is a complete DTMF receiver integrating both the bandsplit ?lter and digital decoder functions. The ?lter section uses switched capacitor techniques for high and low group ?lters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone-pairs into a 4-bit code. External component count is minimized by on chip provision of a differential input ampli?er, clock oscillator and latched three-state bus interface. No Manufacture Warranty & No returnable.