IL755, ILD755
www.vishay.com
Vishay Semiconductors
Optocoupler, Photodarlington Output, AC Input,
High Gain (Single, Dual Channel)
A/C 1
6 B
C/A 2
5 C
NC 3
4 E
A 1
8 E
C 2
7 C
C 3
6 C
A 4
5 E
FEATURES
 AC or polarity insensitive inputs
 Built-in reverse polarity input protection
 Industry standard DIP package
 Compliant to RoHS Directive 2002/95/EC and
in accordance to WEEE 2002/96/EC
APPLICATIONS
 Designed for applications
monitoring of AC signals
requiring
detection
or
AGENCY APPROVALS
 UL1577, file no. E52744 system code H, double protection
i179037-1
 CSA 93751
DESCRIPTION
 BSI IEC 60950; IEC 60065
The IL755, ILD755 are bidirectional input optically coupled
isolators. They consist of two gallium arsenide infrared
emitting diodes coupled to a silicon NPN photodarlington
per channel.
 DIN EN 60747-5-2 (VDE 0884)/DIN EN 60747-5-5
(pending), available with option 1
 CQC
The IL755 is single channel Darlington optocoupler. The
ILD755 has two isolated channels in a single DIP package.
ORDERING INFORMATION
I
PART NUMBER
#
CTR
BIN
PACKAGE OPTION
T
TAPE
AND
REEL
Option 7
DIP-#
7.62 mm
> 0.7 mm
CTR (%)
AGENCY CERTIFIED/PACKAGE
UL, CSA, BSI, CQC
DIP-#
SMD-#, option 7
VDE, UL, CSA, BSI, CQC
DIP-#
SMD-#, option 7
SINGLE CHANNEL, 6 PIN
DUAL CHANNEL, 8 PIN
 2 mA
 1 mA
 2 mA
 750
 1000
 750
 1 mA
 1000
IL755-1
IL755-2
ILD755-1
ILD755-2
IL755-1X007T (1)
IL755-2X007T
ILD755-2X007T
 750
 1000
 750
 1000
IL755-1X001
ILD755-1X017
Notes
 Additional options may be possible, please contact sales office.
(1) Also available in tubes; do not add T to end.
Rev. 1.6, 02-Dec-11
Document Number: 83641
1
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL755, ILD755
www.vishay.com
Vishay Semiconductors
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 C, unless otherwise specified)
PARAMETER
TEST CONDITION
PART
SYMBOL
VALUE
UNIT
INPUT
Forward continuous current
Power dissipation
IF
60
mA
Pdiss
100
mW
1.33
mW/C
Derate linearly from 25C
OUTPUT
Collector emitter breakdown
voltage
BVCEO
60
Collector base breakdown
voltage
BVCBO
60
IL755-1
200
mW
IL755-2
200
mW
150
mW
Power dissipation
Pdiss
ILD755-1
Derate linearly from 25C
ILD755-2
150
mW
IL755-1
2.6
mW/C
IL755-2
2.6
mW/C
ILD755-1
2.0
mW/C
ILD755-2
2.0
mW/C
7500/5300
VAC peak/VRMS
COUPLER
Isolation test voltage
between emitter and detector
t=1s
VISO
Creepage distance
mm
Clearance distance
mm
IL755-1
250
mW
IL755-2
250
mW
400
mW
Total power dissipation
Ptot
ILD755-1
Derate linearly from 25 C
ILD755-2
400
mW
IL755-1
3.0
mW/C
IL755-2
3.0
mW/C
ILD755-1
3.0
mW/C
3.0
mW/C
Storage temperature
ILD755-2
Tstg
- 55 to + 150
Operating temperature
Tamb
- 55 to + 100
10
Lead soldering time at 260 C
Note
 Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not
implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute
maximum ratings for extended periods of the time can adversely affect reliability.
ELECTRICAL CHARACTERISTICS (Tamb = 25 C, unless otherwise specified)
PARAMETER
TEST CONDITION
SYMBOL
MIN.
TYP.
MAX.
UNIT
IF =  10 mA
VF
1.2
1.5
Collector emitter breakdown
voltage
IC = 1.0 mA
BVCEO
60
75
Collector base breakdown
voltage
IC = 10 A
BVCBO
60
90
VCE = 10 V, IF = 0 A
ICEO
IC = 10 mA, IF =  10 mA
VCEsat
INPUT
Forward voltage
OUTPUT
Collector emitter leakage current
10
100
nA
COUPLER
Collector emitter saturation
voltage
Note
 Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering
evaluation. Typical values are for information only and are not part of the testing requirements.
Rev. 1.6, 02-Dec-11
Document Number: 83641
2
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL755, ILD755
www.vishay.com
Vishay Semiconductors
CURRENT TRANSFER RATIO (Tamb = 25 C, unless otherwise specified)
PARAMETER
Current transfer ratio
TEST CONDITION
PART
SYMBOL
MIN.
IF =  2 mA, VCE = 5.0 V
IL755-1
CTR
750
TYP.
MAX.
UNIT
%
IF =  2 mA, VCE = 5.0 V
ILD755-1
CTR
750
IF =  1 mA, VCE = 5.0 V
IL755-2
CTR
1000
IF =  1 mA, VCE = 5.0 V
ILD755-2
CTR
1000
SWITCHING CHARACTERISTICS (Tamb = 25 C, unless otherwise specified)
PARAMETER
TEST CONDITION
VCC = 10 V, IF =  2 mA, RL = 100 
Rise time
Fall time
VCC = 10 V, IF =  2 mA, RL = 100 
Rise time
VCC = 10 V, IF =  1 mA, RL = 100 
VCC = 10 V, IF =  1 mA, RL = 100 
Fall time
PART
SYMBOL
IL755-1
tr
MIN.
TYP.
50
MAX.
UNIT
s
ILD755-1
tr
50
IL755-1
tf
50
ILD755-1
tf
50
IL755-2
tr
70
ILD755-2
tr
70
IL755-2
tf
70
ILD755-2
tf
70
3.0
60
40
85 C
20
25 C
0
- 55 C
- 20
- 40
- 60
- 1.5 - 1.0
- 0.5
0.0
0.5
1.0
0.5
Vce = 1 V
2.0
Vce = 5 V
1.5
1.0
0.5
10
100
Fig. 3 - Normalized Non-Saturated and Saturated CTRCE vs.
LED Current
NIce - Normalized (Ice)
NCTRce - Normalized (CTRce)
Vce = 5 V
1.0
iil755_03
2.5
iil755_02
1.5
IF - LED Current (mA)
Normalized to:
Vce = 5 V
IF = 1 mA
0.0
0.1
IF = 2 mA
0.1
4.0
3.0
Vce = 5 V
2.0
1.5
Fig. 1 - LED Forward Current vs. Forward Voltage
3.5
Normalized to:
2.5
0.0
VF - LED Forward Voltage (V)
iil755b_01
NCTRce - Normalized CTRce
I F - LED Forward Current (mA)
TYPICAL CHARACTERSITICS (Tamb = 25 C, unless otherwise specified)
100 Normalized to:
Vce = 5 V
IF = 2 mA
10
Vce = 5 V
Vce = 1 V
1
0.1
Vce = 1 V
10
100
0.01
0.1
IF - LED Current (mA)
10
100
IF - LED Current (mA)
iil755_04
Fig. 2 - Normalized Non-Saturated and Saturated CTRCE vs.
LED Current
Rev. 1.6, 02-Dec-11
Fig. 4 - Normalized Non-Saturated and Saturated ICE vs.
LED Current
Document Number: 83641
3
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL755, ILD755
www.vishay.com
20
Normalized to:
IF = 10 mA
tpHL - High/Low Propagation
Delay (s)
NIce - Normalized Ice
10
Vishay Semiconductors
Vce = 5 V
Vce = 5 V
Vce = 1 V
0.1
0.01
0.001
1 k
10
100 
5
0.1
100
10
IF - LED Current (mA)
Vcc = 5 V
Vth = 1.5 V
15
10
iil755_08
20
15
IF - LED Current (mA)
iil755_05
Fig. 5 - Normalized Non-Saturated and Saturated Collector-Emitter
Current vs. LED Current
Fig. 8 - High to Low Propagation Delay vs.
Collector Load Resistance and LED Current
hFE - Forward Transfer Gain
10 000
IF
Vce = 5 V
8000
6000
VO
4000
tD
tR
t PLH
Vce = 1 V
2000
VTH = 1.5 V
0
0.01
0.1
10
Fig. 6 - Non-Saturated and Saturated hFE vs. Base Current
tpLH - Low/High Propagation
Delay (s)
tF
tS
iil755_09
Ib - Base Current (A)
iil755_06
t PHL
100
Fig. 9 - Switching Waveform
80
Vcc = 5 V
Vth = 1.5 V
VCC = 10 V
1.0 k
60
f = 10 kHz,
DF = 50 %
220 
40
RL
VO
470 
20
100 
0
0
iil755_07
10
15
IF = 1 mA
20
IF - LED Current (mA)
Fig. 7 - Low to High Propagation Delay vs.
Collector Load Resistance and LED Current
Rev. 1.6, 02-Dec-11
iil755_10
Fig. 10 - Test Circuit, Saturated and Non-Saturated Operation
Document Number: 83641
4
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL755, ILD755
www.vishay.com
Vishay Semiconductors
PACKAGE DIMENSIONS in millimeters
3
Pin one ID
6.4  0.1
ISO method A
8.6  0.1
7.62 typ.
1.2  0.1
1 min.
3.555  0.255
18
4 typ.
2.95  0.5
0.8 min.
0.85  0.05
0.25 typ.
3 to 9
0.5  0.05
7.62 to 8.81
i178004
2.54 typ.
Option 7
7.62 typ.
Pin one ID
4
6.5
6.3
1
4.6
4.1
0.7 min.
6.645  0.165
8.0 min.
ISO method A
8.4 min.
9.77  0.14
10.3 max.
18447
0.95  0.19
7.62 typ.
0.79
4 typ.
3.555  0.255
6.095  0.255
1.27
10
0.70  0.19
0.51  0.05
3.045  0.255
3 to 9
2.54 typ.
0.25  0.05
i178006
PACKAGE MARKING (example)
IL755
V YWW H 68
Notes
 The VDE logo is only marked on option 1 parts.
 Tape and reel suffix (T) is not part of the package marking.
Rev. 1.6, 02-Dec-11
Document Number: 83641
5
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
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Statements regarding the suitability of products for certain types of applications are based on Vishays knowledge of typical
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product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
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including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
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Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
Document Number: 91000