IL755B BIDIRECTIONAL INPUT DARLINGTON OPTOCOUPLER FEATURES • Very High Current Transfer Ratio (500% min.) IL755B-1: 750% at IF=2 mA, VCE=5 V IL755B-2: 1000% at IF=1 mA, VCE=5 V • BVCEO >60 V • Isolation Test Voltage, 5300 VACRMS • AC or Polarity Insensitive Inputs • No Base Connection • High Isolation Resistance, 1012Ω • Low Coupling Capacitance • Standard Plastic DIP Package • Underwriters Lab Approval #E52744 • VDE #0884 Available with Option 1 Dimensions in inches (mm) Detector Collector-Emitter Breakdown Voltage ..............60 V Emitter-Collector Breakdown Voltage ..............12 V Power Dissipation at 25°C Ambient ...........200 mW Derate Linearly from 25°C......................2.6 mW/°C Package Isolation Test Voltage (PK), t=1 sec.................................. 5300 VACRMS Dissipation at 25°C.....................................250 mW Derate Linearly from 25°C(2) .................3.3 mW/°C Creepage ................................................ 7 min mm Clearance................................................ 7 min mm Isolation Resistance TA=25°C.................................................. ≥1012 Ω TA=100°C................................................ ≥1011 Ω Storage Temperature(2) ..............–55°C to +150°C Operating Temperature ................–55°C to +100°C Lead Soldering Time at 260°C .................... 10 sec. pin one Anode/ 1 Cathode ID. Catho e/ 2 Anode 6 Base 5 Collector NC 3 4 5 4 Emitter 6 .335 (8.50) .343 (8.70) .039 (1.00) Min. .300 (7.62) Typ. .130 (3.30) .138 (3.50) 18° Typ. 4° Typ. The IL755B is a bidirectional input, optically coupled isolator consisting of two Gallium Arsenide infrared emitters and a silicon photodarlington sensor. Emitter (Drive Circuit) Continuous Forward Current .........................60 mA Power Dissipation at 25°C..........................100 mW Derate Linearly from 55°C....................1.33 mW/°C 1 .248 (6.30) .256 (6.50) DESCRIPTION Maximum Ratings (at 25°C) 2 3 .032 (0.80) Min. .031 (0.80) .035 (0.90) .100 (2.54) Typ. .018 (0.45) .022 (0.55) .114(2.90) .130 (3.30) .010 (.25) .014 (.35) .300 (7.62) .347 (8.82) Electrical Characteristics (TA=25°C) Symbol Min. Typ. Max. Unit Condition 1.25 1.5 V IF=10 mA V IC=1 mA, IF=0 nA VCE=10 V, IF=0 750 % 1000 % IF=± 2 mA, VCE=5 V IF=± 1 mA, VCE=5 V Emitter Forward Voltage(1) VF Detector(2) Breakdown Voltage, Collector-Emitter BVCEO Leakage Current, Collector-Emitter ICEO 60 75 1.0 100 Package Current Transfer Ratio(2) IL755B-1 CTR IL755B-2 Saturation Voltage, Collector-Emitter VCEsat 1.0 V IC=10 mA, IF=± 10 mA Turn-On Time ton 200 µs VCC=10 V Turn-Off Time toff 200 µs IF=± 2 mA, RL=100 Ω Notes: 1. Indicates JEDEC registered data. 5–1 Figure 5. Normalized non-saturated and saturated collector-emitter current versus LED current 60 10 40 NIce - Normalized Ice IF - LED Forward Current - mA Figure 1. LED forward current versus forward voltage 85°C 20 25°C 0 –55°C -20 -40 -60 -1.5 -1.0 -0.5 0.0 0.5 1.0 Normalized to: Ta = 25°C IF = 10 mA Vce = 5 V 1 Vce = 1V .1 .01 .001 .1 1.5 Figure 6. Low to high propagation delay versus collector load resistance and LED current Normalized to: Ta = 25°C Vce = 5 V IF = 1 mA 3.5 3.0 2.5 tpLH - Low/High Propagation Delay - µs NCTRce - Normalized CTRce 4.0 2.0 Vce = 5 V 1.5 1.0 0.5 Vce = 1 V 0.0 .1 100 1 10 IF - LED Current - mA tpHL - High/Low Propagation delay - µs NCTRce - Normalized CTRce Normalized to: Ta = 25°C Vce = 5 V IF = 2 mA 1.5 Vce = 5 V 1.0 0.5 Vce = 1 V 0.0 .1 1 10 IF - LED Current - mA Ta = 25°C, Vcc = 5V Vth = 1.5 V 60 220Ω 40 470Ω 20 100Ω 0 5 10 15 IF - LED Current - mA NIce - Normalized Ice 10 Normalized to: Ta = 25°C Vce = 5 V IF = 2 mA 100 Vce = 5 V 1KΩ 15 Ta = 25°C Vcc = 5 V Vth = 1.5 V 10 100Ω 5 0 0 5 10 15 IF - LED Current - mA 20 Figure 9. Normalized non-saturated and saturated CTRce versus LED current VCC=10 V IF F=10 KHz, DF=50% Vce = 1 V RL VO 1 tD tR VO .1 .01 .1 20 20 Figure 4. Normalized non-saturated and saturated Figure 8. Switching waveform Ice versus LED current 100 1KΩ Figure 7. High to low propagation delay versus collector load resistance and LED current 3.0 2.0 80 0 Figure 3. Normalized non-saturated and saturated CTRce versus LED current 2.5 100 1 10 IF - LED Current - mA VF - LED Forward Voltage - V Figure 2. Normalized non-saturated and saturated CTRce versus LED current Vce = 5 V 1 10 IF - LED Current - mA IF=2 mA tPLH 100 tPHL tS VTH=1.5 V tF IL755B 5–2