TP5089 DTMF (TOUCH-TONE) Generator

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NSC

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DTMF (TOUCH-TONE) Generator

General Description\nThe 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 re ■ 3.5V–10V operation when generating tones\n■ 2V operation of keyscan and MUTE logic\n■ Static sensing of key closures or logic inputs\n■ On-chip 3.579545 MHz crystal-controlled oscillator\n■ Output amplitudes proportional to supply voltage\n■ High group pre-emphasis\n■ Low harmonic distortion\n■ Op;

TI

德州儀器

TP5089 DTMF (TOUCH-TONE) Generator

文件：119.91 Kbytes 頁(yè)數(shù)：6 Pages

NSC

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Specification for a Sine Output OCXO

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MTRONPTI