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SINGLE CHANNEL
IL255
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 DE
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 s, 300 pps) ........... 3 A Continuous Forward Current......... 130 mA RMS Power Dissipation at 25C .................... 175 mW Derate Linearly from 25C ................ 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 25C .................... 200 mW Derate Linearly from 25C ................ 2.6 mW/C Package Isolation Test Voltage ................... 5300 VACRMS Between Emitter and Detector Refer to Standard Climate 23C/50%RH, DIN 50014 Creepage...........................................min. 7 mm Clearance ..........................................min. 7 mm Isolation Resistance VIO=500 V, TA=25C...........................1012 VIO=500 V, TA=100C.........................1011 Total Dissipation at 25C....................... 250 mW Derate Linearly from 25C ................ 3.3 mW/C Storage Temperature ............. -55C to +150C Operating Temperature ......... -55C to +100C Lead Soldering Time at 260C ...............10 sec.
Package Dimensions in Inches (mm)
3 .248 (6.30) .256 (6.50) 4 5 6 2 1 Pin One ID. Anode/ Cathode 1 Cathode/ 2 Anode NC 3 .300 (7.62) typ. .130 (3.30) .150 (3.81) 18 typ. .020 (.051) min. .031 (0.80) .035 (0.90) .100 (2.54) Typ. .010 (.25) .014 (.35) .300 (7.62) .347 (8.82) .110 (2.79) .150 (3.81) .335 (8.50) .343 (8.70) .039 (1.00) min. 4 typ. .018 (0.45) .022 (0.55)
6 5 4
Base Collector Emitter
Electrical Characteristics (TA=25C)
Parameter Min. Typ. Max. Unit Test Condition
Emitter Forward Voltage
Detector
1.4
1.7
V
IF= 100 mA IC=10 mA IE=10 A IC=100 A IE=100 A VCE=10 V
BVCEO BVECO BVCBO BVEBO ICEO
Package Parameter Device
30 7 70 7
50 10
V V V V
5
50
nA
Symbol
Min.
Typ.
Max.
Unit
Test Condition
IL255 Current Transfer Ratio IL255-1 CTR IL255-2 IL255 IL255-1 IL255-2 IL255 Collectoremitter Saturation Voltage IL255-1 VCE(sat) IL255-2
20 20 50 0.33 3.0 80
% % %
IF= 10 mA, VCE=10 V IF= 100 mA, VCE=2 V IF= 10 mA, VCE=10 V IF= 10 mA, VCE=10 V IF= 10 mA, VCE=10 V
Current Transfer Ratio Symmetry
0.5
1.0
2.0 0.4 V V V
IF= 10 mA, IC=0.5 mA IF= 100 mA, IC=1 mA IF= 16 mA, IC=2 mA
JUNE 1995
0.1
0.2 0.4
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
Figure 7. Collector-emitter current versus LED collector-emitter voltage
Ice-Collector Emitter Current - mA
12 10 8 6 4 2 0 0 0.2 0.4 0.6 1.0 1.4 1.8
IF=8 mA IF=7 mA IF=6 mA IF=5 mA IF=4 mA IF=3 mA IF=2 mA IF=1 mA 2.2
Vce-Collector Emitter Voltage - V
IL255
2

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