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
| Brand Product | Generic |
|---|---|
| GTIN | 1, |
| IC type | N/A |
| Is Featured | No |
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Stock |
Shipping Method |
ETA |
Cost |
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Available |
Self Pickup |
1 Day |
Free |
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Available |
inside UAE |
2 - 3 Days |
22 AED / Free Above 50 AED |
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Available |
International |
4 - 7 Days |
180 AED / 49 $ |
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pre-order |
General |
2 Weeks |