1 of 3 Hutton Close, Crowther Ind Est, Dist 3, Washington, Tyne & Wear NE38 0AH, England Email: isocom@dial.pipex.com - Tel: +44 0191 4166546 - Fax: +44 0191 4155055 Circuit Features Description Absolute Maximum Ratings Electrical Characteristics Similar Optocouplers Home Page IS452, IS725: DARLINGTON OPTOCOUPLER Circuit IS452 IS725 Features Low Input Current Requirement of 1 mA High Isolation Voltage High CTR 1000% Min 2 of 3 100% Test on Electrical Parameters Description The IS725 consists of a Gallium Arsenide Infrared emitting diode coupled with a silicon photodarlington which has an integral baseemitter resistor to optimise the switching speed in a dual in-line package. Surface Mount Option Available. Applications Telecommunications, Modem, Data Systems, Switch Mode Power Supplies, Telephone Systems. Absolute Maximum Ratings (Ta=25C) Storage Temperature: -55C to +150C Operating Temperature: -55C to +100C Lead Soldering: 260C for 10s, 1.6mm from case Input-to-Output Isolation Test Voltage: 4000 Vrms (Transient Overvoltage, t=10s) Output Collector-emitter voltage BV Emitter-base voltage BV EBO CEO : Collector Dark Current: Power Dissipation: Derate Linearly: : 100V 7V 100nA 300/500mW 2.00mW/C above 25C Infrared Emitting Diode Power Dissipation: Derate Linearly: Input Current (RMS): Input Current (Peak): 100mW 2.00mW/C above 25C 60mA 0.5A Individual Electrical Characteristics (Ta=25C) 3 of 3 C Terminal Capacitance f=1MHz, V=0 -50 Forward Voltage I =10mA 30 Reverse Current V =4V OUTPUT BV CEO Collector-emitter Voltage I =1mA 100 V BV ECO Emitter-collector Voltage I =0.1mA 7 V Collector-emitter Dark Current V t V I I F R CEO COUPLED PARAMETER I /I DC Current Transfer Ratio C F R F C E CE =20V, I =0 CONDITIONS I =10mA, V =1V F CE V=0, f=1MHz 10 A 1000 Capacitance Input to Output C V nA MIN TYP MAX UNIT IO C F 1.5 100 F CE(SAT) V 1.2 R Input-to-output Isolation Resistance VIO =500V, RH=40~60% 100 Collector-emitter Saturation Voltage I =10mA, I =0.5mA ISO pF % 100 Gohm 0.75 1.0 V 2 pF Isocom takes great effort to ensure accurate data, but regrettably cannot be held liable for any error on its website. Visit File Lists to confirm old printouts are up-to-date. Contents