ΟΛΟΚΛΗΡΩΜΕΝΟ ΚΥΚΛΩΜΑ TP5089 TON DIALER
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ΟΛΟΚΛΗΡΩΜΕΝΟ ΚΥΚΛΩΜΑ TP5089 TON DIALER

Референция: TP5089
2,98 €
с ДДС
Изчерпана наличност

DTMF Touch-Tone Generator DIP-16

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 components required for tone generation. A MUTE OUT logic signal, which changes state when any key is depressed, is also provided.

Features

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 INHIBIT pin
TP5089

Данни за продукта

Интегрална схема
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