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TP5089 PDF File ( Datasheet )

Texas Instruments
TP5089N
Telephone Dialer Circuit, CMOS, PDIP16

PDF Datasheet
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TP5089 Description
TP5089 DTMF (TOUCH-TONE) Generator (Rev. A)

Texas Instruments
Texas Instruments
TP5089 DTMF (TOUCH-TONE) Generator

TP5089 DTMF(TOUCH-TONE) Generator December 1991 TP5089 DTMF (TOUCH-TONE) Generator 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 MH- crystal for high tone accuracy The crystal and an output load resis
National Semiconductor
National Semiconductor



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