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CD22859 - Monolithic Silicon COS/MOS Dual-Tone Multifrequency Tone Generator

Datasheet Summary

Features

  • Mute Drivers On-Chip.
  • Device Power can Either be Regulated DC or Telephone Loop Current.
  • Use of an Inexpensive 3.579545MHz TV Crystal Provides High Accuracy and Stability for all Frequencies.

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Datasheet preview – CD22859

Datasheet Details

Part number CD22859
Manufacturer Intersil Corporation
File Size 38.86 KB
Description Monolithic Silicon COS/MOS Dual-Tone Multifrequency Tone Generator
Datasheet download datasheet CD22859 Datasheet
Additional preview pages of the CD22859 datasheet.

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Full PDF Text Transcription

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Semiconductor T UCT ROD ACEMEN 47 P E 7 T L OLE REP 00-442-7 OBS ENDED 8 M ns 1 .com COM pplicatio @harris E R NOSheet tapp ral A Data February 1999 Cent ail: cen l l a m C e or CD22859 File Number 1257.4 Monolithic Silicon COS/MOS Dual-Tone Multifrequency Tone Generator [ /Title The CD22859 is a CMOS dual-tone multifrequency (DTMF) (CD22 tone generator for use in dual-tone telephone dialing systems. The device can easily be interfaced to a standard 859) push-button telephone keyboard to provide enabling /Suboperation directly with the telephone lines. ject (Monol The CD22859 generates standard DTMF sinusoidal dialing tones from an on-chip reference crystal oscillator. The ithic reference oscillator uses an inexpensive 3.
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