IL256AT AC Input Phototransistor Small Outline Surface Mount Optocoupler FEATURES * Guaranteed CTR Symmetry, 2:1 Maximum * Bidirectional AC Input Industry Standard SOIC-8 Surface * Mountable Package * Standard Lead Spacing, .05" * Available only on Tape and Reel Option (Conforms to EIA Standard RS481A) * Underwriters Lab File #E52744 (Code Letter Y) * V VDE 0884 Available with Option 1 D E Dimensions in inches (mm) Anode/ Cathode 1 Cathode/ 2 Anode .154 .005 CL NC 3 (3.91.13) .120.005 (3.05.13) .240 (6.10) Maximum Ratings Emitter Continuous Forward Current ...................... 60 mA Power Dissipation at 25C......................... 90 mW Derate Linearly from 25C................... 0.8 mW/C Detector Collector-Emitter Breakdown Voltage............ 30 V Emitter-Collector Breakdown Voltage........... 5.0 V Collector-Base Breakdown Voltage............... 70 V Power Dissipation ................................... 150 mW Derate Linearly from 25C................... 2.0 mW/C Package Total Package Dissipation at 25C Ambient (LED + Detector) ................................. 240 mW Derate Linearly from 25C.................... 3.2mW/C Storage Temperature ................ -55C to +150C Operating Temperature ............ -55C to +100C Soldering Time at 260C ........................... 10 sec. Document Number: 83620 Revision 17-August-01 5 Emitter NC 4 Pin One ID .192.005 (4.88.13) .015.002 (.38 .05) .004 (.10) .008 (.20) .008 (.20) .050 (1.27) typ. .020.004 (.51.10) .021 (.53) 2 plcs. The IL256A is an AC input phototransistor optocoupler. The device consists of two infrared emitters connected in anti-parallel and coupled to a silicon NPN phototransistor detector. The product is well suited for telecom applications such as ring detection or off/on hook status, given its bidirectional LED input and guaranteed current transfer ratio (CTR) minimum of 20% at IF=10 mA. 7 Base 6 Collector .016 (.41) DESCRIPTION These circuit elements are constructed with a standard SOIC-8 foot print. 8 NC 7 .058.005 (1.49.13) 40 .125 .005 (3.18 .13) 5max. R.010 (.25) max. Lead Coplanarity .0015 (.04) max. Characteristics TA=25C Symbol Min. Typ. Max. Unit Condition VF -- 1.2 1.5 V IF=10 mA BVCEO 30 50 -- V IC=1.0 mA BVECO 5.0 10 -- V IE=100 A BVCBO 70 90 -- V IC=100 A ICEO -- 5.0 50 nA VCE=10 V DC Current Transfer Ratio CTR 20 -- -- % IF=10 mA, VCE=5.0 V Symmetry CTR at +10mA CTR at -10 mA -- 0.5 1.0 2.0 -- -- Saturation Voltage, Collector-Emitter VCEsat -- -- 0.4 -- IF=16 mA, IC=2.0 mA Isolation Voltage, Input to Output VIO 3000 -- -- VRMS -- Emitter Forward Voltage Detector Breakdown Voltage Leakage Current, Collector-Emitter Package www.vishay.com 2-125 Figure 5. Normalized saturated CTR 1.0 60 40 85C Normalized CTR 20 25C 0 -55C -20 -40 0.8 0.6 0.4 -0.5 0.0 0.5 1.0 1.5 0.0 VF - LED Forward Voltage - V .1 Figure 2. Forward voltage versus forward current TA = -55C 1.2 TA = 25C 1.1 1.0 0.9 TA = 100C 0.8 .1 1 10 IF - Forward Current - mA 10000 1.0 TA = 25C TA = 50C TA = 70C 0.5 .1 1 10 IF - LED Current - mA 1000 DF = /t ICB - Photocurrent - A t 10 10-6 10-5 10-4 10-3 10-2 10-1 100 101 t - LED Pulse Duration - s Figure 4. Normalized CTR versus IF and Ta 25C 100 70C 10 1 .1 .1 1 10 IF - LED Current - mA 700 Normalized to: IF = 10 mA, VCE =10V TA = 25C TA = 25C TA = 50C TA = 70C TA = 100C HFE - Transistor Gain 0.0 1 10 IF - LED Current - mA Document Number: 83620 Revision 17-August-01 100 VCE=0.4 V, TA=25C 0.5 .1 100 Figure 8. Base current versus IF and HFE 2.0 1.0 100 Figure 7. Photocurrent versus LED current Duty Factor .005 .01 1000 .02 .05 .1 .2 .5 100 Normalized to: IF = 10 mA TA = 25C 0.0 100 Figure 3. Peak LED current versus duty factor, Tau 1.5 100 1.5 1.3 0.7 If(pk) - Peak LED Current - mA 1 10 IF - LED Current - mA Figure 6. Normalized CTRcb Normalized CTRcb VF - Forward Voltage - V 1.4 Normalized CTR Normalized to: IF = 10 mA, VCE =10 V TA = 25C 0.2 -60 -1.5 -1.0 VCE(sat) =0.4 V TA = 25C TA = 50C TA = 70C TA = 100C 100 600 500 10 400 300 1 200 100 1 10 100 IB - Base Current - A IF - LED Current - mA IF - LED Forward Current - mA Figure 1. LED forward current versus forward voltage .1 1000 www.vishay.com 2-126 Figure 9. Normalized HFE versus Ib, Ta Figure 11. Base emitter voltage versus base current Normalized to: IB = 10 A TA = 25C VCE = 10 V 1.0 NHFE -20C NHFE 25C NHFE 50C NHFE 70C 0.8 0.6 1000 IB - Base Current - A Normalized HFE 1.2 0.4 10 100 IB - Base Current - A Figure 10. Normalized saturated HFE versus Ib Normalized Saturated HFE 1.5 Normalized to: HFE at VCE = 10V, ICB = 10 A TA = 25C 1.0 TA = -20C TA = 25C TA = 50C TA = 70C 0.5 VCE(sat) = 0.4 V 0.0 1 10 100 IB - Base Current - A Document Number: 83620 Revision 17-August-01 1000 TA = 25C 10 1 .1 .01 .001 0.4 1000 0.5 0.6 0.7 VBE - Base Emitter Voltage - V 0.8 Figure 12. Collector-emitter leakage current versus temperature ICEO - Collector-Emitter - nA 1 100 105 104 103 102 VCE = 10 V 101 Typical 100 10-1 10-2 -20 0 20 40 60 80 100 TA - Ambient Temperature - C www.vishay.com 2-127