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TP5089 Datasheet Tp5089 Dtmf (touch-tone) Generator

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: TP5089 DTMF(TOUCH-TONE) Generator December 1991 TP5089 DTMF (TOUCH-TONE).

General Description

The TP5089 is a low threshold voltage field-implanted metal gate CMOS integrated circuit It interfaces directly to a standard telephone keypad and generates all dual tone multi-frequency pairs required in tone-dialing systems The tone synthesizers are locked to an on-chip reference oscillator using an inexpensive 3 579545 MHz crystal for high tone accuracy The crystal and an output load resistor are the only external ponents required for tone generation A MUTE OUT logic signal which changes state when any key is depressed is also provided

Key Features

  • Y Y Y Y Y Y Y Y Y 3 5V.
  • 10V operation when generating tones 2V operation of keyscan and MUTE logic Static sensing of key closures or logic inputs On-chip 3 579545 MHz crystal-controlled oscillator Output amplitudes proportional to supply voltage High group pre-emphasis Low harmonic distortion Open emitter-follower low-impedance output SINGLE TONE.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
TP5088 TP5088 DTMF Generator for Binary Data
TP5116A (TP5116A / TP5156A) Monolithic CODECs
TP5156A (TP5116A / TP5156A) Monolithic CODECs
TP5510 Full Duplex Analog Front End for Consumer Applications

TP5089 Distributor