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CPC7581MCTR Datasheet(PDF) 9 Page - Clare, Inc. |
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CPC7581MCTR Datasheet(HTML) 9 Page - Clare, Inc. |
9 / 17 page CPC7581 R05 www.clare.com 9 1.8 Protection Circuitry Electrical Specifications 1.9 Truth Table Parameter Conditions Symbol Minimum Typical Maximum Unit Parameters Related to the Diodes in the Diode Bridge Voltage drop at continuous current (50/ 60 Hz) Apply ± dc current limit of break switches Forward Voltage -2.1 3 V Voltage drop at surge current Apply ± dynamic current limit of break switches Forward Voltage -5- Parameters Related to the Protection SCR Surge current - - - - * A Trigger current T=+25°C ITRIG - 60 (CPC7581xA) 70 (CPC7581xC) -mA T=+85°C 35 (CPC7581xA) 40 (CPC7581xC) Hold current T=+25°C IHOLD 110 (CPC7581xA) 135 (CPC7581xC) T=+85°C 60 (CPC7581xA) 110 (CPC7581xC) 70 (CPC7581xA) 115 (CPC7581xC) Gate trigger voltage IGATE = ITRIGGER** VTBAT or VRBAT VBAT -4 - VBAT -2 V Reverse leakage current VBAT = -48 V IVBAT -- 1.0 μA On-state voltage 0.5 A, t = 0.5 μsV TBAT or VRBAT- --3- V 2.0 A, t = 0.5 μs- -5 - V *Passes GR1089 and ITU-T K.20 with appropriate secondary protection in place. **VBAT must be capable of sourcing ITRIGGER for the internal SCR to activate. State INRINGING Latch TSD Break Switches Ringing Switches Talk 0 0 Z1 On Off Ringing 1 Off On Latched X 1 Unchanged All-Off X X 0 Off Off 1 Z = High Impedance. Because T SD has an internal pull up at this pin, it should be controlled with an open-collector or open-drain type device. |
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