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CPC7581BB Datasheet(PDF) 6 Page - Clare, Inc. |
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CPC7581BB Datasheet(HTML) 6 Page - Clare, Inc. |
6 / 12 page www.clare.com 6 CPC7581 Rev. 2 Table 8. Truth Table Input TSD Tip Break Ring Ringing Ring State Switch Break Return Switch Switch Switch 0V 5V/Float1 On On Off Off Idle/Talk 5V 5V/Float1 Off Off On On Ringing Don’t 0V2 Off Off Off Off All Off Care 1 Thermal shutdown mechanism is active with TSD floating or equal to 5V and cannot be disabled. 2 Forcing TSD to ground overrides the logic input pins and forces an all off state. Table 7. Electrical Specifications, Protection Circuitry PARAMETER CONDITIONS SYMBOL MIN TYP MAX UNITS Parameters Related to Diodes (in Diode Bridge) Voltage Drop @ Continuous Apply +/-dc current limit of break Forward - 2.1 3 V Current (50/60 Hz) switches Voltage Voltage Drop @ Surge Apply +/-dynamic current limit of Forward - 5 - V Current break switches Voltage Parameters Related to Protection SCR1 Surge Current - - - - * A Trigger Current (+25˚C) - I TRIG -60 - mA Hold Current (+25˚C) - I HOLD - 100 - mA Trigger Current (+85˚C) - I TRIG -35 - mA Hold Current (+85˚C) I HOLD 60 70 - mA Gate Trigger Voltage Trigger Current - V BAT - 4 - V BAT - 2 V Reverse Leakage Current V BAT - - - 1.0 µA ON State Voltage1 0.5A t = 0.5 ms V on --3 - V 2.0A t = 0.5 ms - - -5 - V 1 Only for the CPC7581BA. * Passes GR1089 & ITU-T K.20 with appropriate secondary protection in place. |
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