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SA589 Datasheet(PDF) 9 Page - Sames |
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SA589 Datasheet(HTML) 9 Page - Sames |
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9 / 14 page ![]() SA589 FAMILY sames 9/14 Fig. 4 DTMF tone filtering Fig. 5 DTMF mode timing diagram ROW 100ms "8" 100ms IMP(LOW) MF OUT DR-00687 MASK MUTE 100ms "5" "5" "8" "TBR" "9"SHORTENED ON HOOK TIME OUT "9" COLUMN HOOK SWITCH KEY PRESS Typical values: R1 = 56k R2 = 56k R4 + R3 = 10k C1 = 1.3nF C2 = 470pF DR-00686 Ω Ω Ω C12 V SS OUTPUT MFOUT SA589 R1 R2 17 FILTOUT C1 FILTIN 89 V DD |
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