Monolithic Silicon Cos/mos Dual-tone Multifrequency Tone Generator

The CD22859 is a CMOS dual-tone multifrequency (DTMF) Tone generator for use in dual-tone telephone dialing systems. The device CAN easily be interfaced to a standard push-button telephone keyboard to provide enabling operation directly with the telephone lines. The CD22859 generates standard DTMF sinusoidal dialing Tones from an on-chip reference crystal Oscillator The reference Oscillator uses an inexpensive 3.579545MHz color TV crystal to create highly stable and accurate Tones The sinusoidal Tones are digitally synthesized by a stair-step approximation. By Intersil Corporation
CD22859 's PackagesCD22859 's pdf datasheet

CD22859 Pinout, Pinouts
CD22859 pinout,Pin out
This is one package pinout of CD22859,If you need more pinouts please download CD22859's pdf datasheet.

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