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HT9320B Datasheet(PDF) 7 Page - Holtek Semiconductor Inc |
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HT9320B Datasheet(HTML) 7 Page - Holtek Semiconductor Inc |
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7 / 30 page  Pin Name I/O Internal Connection Description CLOCK O NMOS OUT NMOS open drain output. When dialing, it outputs a series of pulse trains for DOUT data synchronization. DOUT data is valid at the falling edge of clock. VDD I ¾ Positive power supply, 2.0V~5.5V for normal operation VSS I ¾ Negative power supply HST I CMOS IN Pull-low (HT9320A) On-hook store enable input HST=VDD: On-hook store (HT9320A/H) HST=Floating: Off-hook store (HT9320A) HST=VSS: Off-hook store (HT9320H) The Pull-low resistance is 200kW typ. CMOS IN (HT9320H) M/B I CMOS IN Pull-high (HT9320A) Make/Break ratio selection M/B=VSS: 33.3/66.6 (HT9320A) M/B=Floating: 40/60 (HT9320A) M/B=VDD: 33.3/66.6 (HT9320H) M/B=VSS: 40/60 (HT9320H) The pull-high resistance is 200kW typ. CMOS IN (HT9320H) KT O CMOS OUT Keytone output pin. Outputs a 1.2kHz tone carrier for 34ms each time a key is pressed in the pulse mode. Approximate internal connection circuits HT9320 7 July 21, 1999 NM O S O UT VD D CM O S I N/ O U T CM O S O UT CM O S I N Pu l l - l o w CM O S I N Pu l l - h i g h CM O S I N OS C I L L A T OR X1 X2 EN 10M 20pF 10pF VD D |
Similar Part No. - HT9320B |
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Similar Description - HT9320B |
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