CD22859 Description
Semiconductor T UCT ROD ACEMEN 47 P E 7 T L OLE REP 00-442-7 OBS ENDED 8 M ns 1 . 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.
CD22859 Key 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
CD22859 Applications
- For Use In Dual-tone Telephone Dialing Systems