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HT9320C Datasheet(PDF) 10 Page - Holtek Semiconductor Inc |
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HT9320C Datasheet(HTML) 10 Page - Holtek Semiconductor Inc |
10 / 30 page Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions TIDP Inter-digit-pause Time ¾ Pulse rate=10pps. No resistor is linked between R1 and C5 (HT9320A/B/C/K) ¾ 800 ¾ ms Pulse rate=10pps (HT9320H/L) Pulse rate=10pps. A resistor is linked between R1 and C5 (HT9320A/B/C/K) ¾ 400 ¾ Pulse rate=20pps ¾ 500 ¾ TM Pulse Make Duration ¾ A resistor is linked between R2 and C1 (HT9320B/C/K/L) ¾ 33 (10pps) 17 (20pps) ¾ ms M/B=VSS (HT9320A) M/B=VDD (HT9320H) No resistor is linked between R2 and C1 (HT9320B/C/K/L) ¾ 40 (10pps) 20 (20pps) ¾ M/B=Floating (HT9320A) M/B=VSS (HT9320H) TB pulse Break Duration ¾ A resistor is linked between R2 and C1 (HT9320B/C/K/L) ¾ 66 (10pps) 33 (20pps) ¾ ms M/B=VSS (HT9320A) M/B=VDD (HT9320H) No resistor is linked between R2 and C1 (HT9320B/C/K/L) ¾ 60 (10pps) 30 (20pps) ¾ M/B=Floating (HT9320A) M/B=VSS (HT9320H) TKT Keytone Duration ¾ Pulse mode (HT9320K) ¾ 34 ¾ ms FKTC Keytone Carrier ¾ Pulse mode (HT9320K) ¾ 1.2 ¾ kHz Tone Mode Electrical Characteristics fOSC=3.5795MHz, Ta=25°C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions VTDC DTMF Output DC Level ¾¾ 0.45VDD ¾ 0.7VDD V ITOL DTMF Sink Current 2.5V VDTMF=0.5V 0.1 ¾¾ mA VTAC DTMF Output AC Level ¾ Row group, RL=5kW 0.12 0.155 0.18 Vrms RL DTMF Output Load 2.5V THD£-23dB 5 ¾¾ kW ACR Column Pre-emphasis 2.5V Row group=0dB 1 2 3 dB HT9320 10 July 21, 1999 |
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