IL255 SINGLE CHANNEL BIDIRECTIONAL INPUT OPTOCOUPLER FEATURES • AC or Polarity Insensitive Inputs • Continuous Forward Current, 130 mA • Applications—Telecommunications – Ring Detection – Loop Current Detector • Built-in Reverse Polarity Input Protection • Improved CTR Symmetry • Industry Standard DIP Package • Underwriters Lab File #E52744 V • VDE Approval #0884 Applied For D E DESCRIPTION The IL255 is a bidirectional input optically coupled isolator consisting of two high current Gallium Arsenide infrared LEDs coupled to a silicon NPN phototransistor. The IL255 has a minimum CTR of 20% This optocoupler is ideal for applications requiring AC signal detection and monitoring. Maximum Ratings Emitter Peak Pulsed Current (1 µs, 300 pps) ........... 3 A Continuous Forward Current......... 130 mA RMS Power Dissipation at 25°C .................... 175 mW Derate Linearly from 25°C ................ 2.3 mW/°C Detector Collector-Emitter Breakdown Voltage ........ 30 V Emitter-Base Breakdown Voltage ................ 5 V Collector-Base Breakdown Voltage ............ 70 V Power Dissipation at 25°C .................... 200 mW Derate Linearly from 25°C ................ 2.6 mW/°C Package Isolation Test Voltage ................... 5300 VACRMS Between Emitter and Detector Refer to Standard Climate 23°C/50%RH, DIN 50014 Creepage...........................................min. 7 mm Clearance ..........................................min. 7 mm Isolation Resistance VIO=500 V, TA=25°C...........................≥1012 Ω VIO=500 V, TA=100°C.........................≥1011 Ω Total Dissipation at 25°C....................... 250 mW Derate Linearly from 25°C ................ 3.3 mW/°C Storage Temperature ............. –55°C to +150°C Operating Temperature ......... –55°C to +100°C Lead Soldering Time at 260°C ...............10 sec. Package Dimensions in Inches (mm) 3 2 1 Pin One ID. Anode/ Cathode 1 Cathode/ 2 Anode .248 (6.30) .256 (6.50) 4 5 6 NC 3 .335 (8.50) .343 (8.70) 6 Base 5 Collector 4 Emitter .300 (7.62) typ. .039 (1.00) min. .130 (3.30) .150 (3.81) 4° typ. 18° typ. .020 (.051) min. .031 (0.80) .035 (0.90) .100 (2.54) Typ. .018 (0.45) .022 (0.55) .010 (.25) .014 (.35) .300 (7.62) .347 (8.82) .110 (2.79) .150 (3.81) Electrical Characteristics (TA=25°C) Parameter Min. Typ. Max. Unit Test Condition 1.4 1.7 V IF=± 100 mA Emitter Forward Voltage Detector BVCEO 30 50 V IC=10 mA BVECO 7 10 V IE=10 µA BVCBO 70 V IC=100 µA BVEBO 7 V IE=100 µA nA VCE=10 V 5 ICEO 50 Package Parameter Current Transfer Ratio Current Transfer Ratio Symmetry Device Symbol Min. IL255 20 IL255-1 CTR 20 IL255-2 50 IL255 0.33 Typ. 80 Unit Test Condition % IF=± 10 mA, VCE=10 V % IF=± 100 mA, VCE=2 V % IF=± 10 mA, VCE=10 V 3.0 IF=± 10 mA, VCE=10 V 2.0 IF=± 10 mA, VCE=10 V IL255-1 IL255-2 0.5 1.0 IL255 Collectoremitter Saturation Voltage Max. IL255-1 VCE(sat) IL255-2 0.1 0.4 V IF=± 10 mA, IC=0.5 mA 0.2 V IF=± 100 mA, IC=1 mA 0.4 V IF=± 16 mA, IC=2 mA JUNE 1995 Figure 1. LED forward current versus forward voltage Figure 3. Maximum LED power dissipation Figure 5. Saturated and non-saturated collector-emitter current versus LED current Figure 2. Maximum LED current versus ambient temperature Figure 4. Current transfer ratio versus LED current and collector-emitter voltage Figure 6. Saturated and non-saturated collector-emitter current versus LED current Ice–Collector Emitter Current – mA Figure 7. Collector-emitter current versus LED collector-emitter voltage IF=8 mA 12 IF=7 mA 10 IF=6 mA 8 IF=5 mA 6 IF=4 mA IF=3 mA 4 IF=2 mA 2 IF=1 mA 0 0 0.2 0.4 0.6 1.0 1.4 1.8 2.2 Vce–Collector Emitter Voltage – V IL255 2