8870 DTMF IC

• DTMF receiver integrating both the bandsplit filter and digital decoder functions.
• The filter section uses switched capacitor techniques for high and low group filters; 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 amplifier, clock oscillator and latched three-state bus interface.
• Single 18-pin DIP

Delivery Time: 4~8 weeks