Document Number: 83640 For technical questions, contact: optocoupleranswers@vishay.com www.vishay.com
Rev. 1.7, 27-May-11 1
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
Optocoupler, Phototransistor Output
(Dual, Quad Channel)
ILD74, ILQ74
Vishay Semiconductors
DESCRIPTION
The ILD74, ILQ74 is an optically coupled pair with a GaAIAs
infrared LED and a silicon NPN phototransistor. Signal
information, including a DC level, can be transmitted by the
device while maintaining a high degree of electrical isolation
between input and output.
The ILD74, ILQ74 is especially for driving medium-speed
logic, where it may be used to eliminate troublesome ground
loop and noise problems. Also it can be used to replace
relays and transformers in many digital interface
applications, as well as analog applications such as CTR
modulation.
The ILD74 has two isolated channels in a single DIP
package; the ILQ74 has four isolated channels per package.
FEATURES
• ILD74, ILQ74 TTL compatible
• Transfer ratio, 35 % typical
• Coupling capacitance, 0.5 pF
• Single, dual, and quad channel
• Industry standard DIP packages
• Compliant to RoHS Directive 2002/95/EC and
in accordance to WEEE 2002/96/EC
AGENCY APPROVALS
• UL1577, file no. E52744 system code H or J, double
protection
• CSA 93751
• BSI IEC 60950; IEC 60065
• DIN EN 60747-5-2 (VDE 0884)/DIN EN 60747-5-5 pending
available with option 1
•FIMKO
Notes
• Additional options may be possible, please contact sales office.
(1) Also available in tubes, do not put “T” on the end.
1
2
3
4
8
7
6
5
E
C
C
E
A
C
C
A
A
C
C
A
A
C
C
A
E
C
C
E
E
C
C
E
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
i179015-1
Dual Channel
Quad Channel
ORDERING INFORMATION
ILx74-X0##T
PART NUMBER
x = D (Dual) or Q (Quad)
PACKAGE OPTION TAPE AND
REEL
AGENCY CERTIFIED/PACKAGE DUAL CHANNEL QUAD CHANNEL
CTR (%)
UL, CSA, BSI, FIMKO 12.5 12.5
DIP-8 ILD74 -
SMD-8, option 9 ILD74-X009T (1) -
DIP-16 - ILQ74
SMD-16, option 9 - ILQ74-X009T (1)
VDE, UL, CSA, BSI, FIMKO 12.5 12.5
DIP-8 ILD74-X001 -
DIP-8, 400 mil, option 6 ILD74-X016 -
SMD-8, option 7 ILD74-X017T -
DIP-16 - ILQ74-X001
> 0.1 mm
10.16 mm
> 0.7 mm
7.62 mm
DIP-#
Option 7
Option 6
Option 9
www.vishay.com For technical questions, contact: optocoupleranswers@vishay.com Document Number: 83640
2Rev. 1.7, 27-May-11
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
ILD74, ILQ74
Vishay Semiconductors Optocoupler, Phototransistor Output
(Dual, Quad Channel)
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.
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.
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION PART SYMBOL VALUE UNIT
INPUT
Peak reverse voltage VR3V
Forward continuous current IF 60 mA
Power dissipation Pdiss 100 mW
Derate linearly from 55 % 1.33 mW/°C
OUTPUT
Collector emitter breakdown voltage BVCEO 20 V
Emitter collector breakdown voltage BVECO 5V
Collector base breakdown voltage BVCBO 70 V
Power dissipation Pdiss 150 mW
Derate linearly from 25 °C 2mW/°C
COUPLER
Isolation test voltage t = 1 s VISO 5300 VRMS
Isolation resistance VIO = 500 V, Tamb = 25 °C RIO 1012
VIO = 500 V, Tamb = 100 °C RIO 1011
Total package dissipation ILD74 Ptot 400 mW
ILQ74 Ptot 500 mW
Derate linearly from 25 °C ILD74 5.33 mW/°C
ILQ74 6.67 mW/°C
Creepage distance 7mm
Clearance distance 7mm
Storage temperature Tstg - 55 to + 150 °C
Operating temperature Tamb - 55 to + 100 °C
Lead soldering time at 260 °C 10 s
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
INPUT
Forward voltage IF = 20 mA VF1.3 1.5 V
Reverse current VR = 3 V IR0.1 100 μA
Capacitance VR = 0 V CO25 pF
OUTPUT
Collector emitter breakdown voltage IC = 1 mA BVCEO 20 50 V
Collector emitter leakage current VCE = 5 V, IF = 0 A ICEO 5500nA
Capacitance collector emitter VCE = 0 V, f = 1 Hz CCE 10 pF
COUPLER
Saturation voltage, collector emitter IC = 2 mA, IF = 16 mA VCEsat 0.3 0.5 V
Resistance (input to output) RIO 100 G
Capacitance (input to output) CIO 0.5 pF
Document Number: 83640 For technical questions, contact: optocoupleranswers@vishay.com www.vishay.com
Rev. 1.7, 27-May-11 3
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
ILD74, ILQ74
Optocoupler, Phototransistor Output
(Dual, Quad Channel) Vishay Semiconductors
TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
Fig. 1 - Forward Voltage vs. Forward Current
Fig. 2 - Normalized Non-Saturated and Saturated CTR vs.
LED Current
Fig. 3 - Normalized Non-Saturated and Saturated CTR vs.
LED Current
Fig. 4 - Normalized Non-Saturated and Saturated CTR vs.
LED Current
CURRENT TRANSFER RATIO (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
DC current transfer ratio IF = 16 mA, VCE = 5 V CTRDC 12.5 35 %
SWITCHING CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
Switching times RL = 100 , VCE = 10 V, IC = 2 mA ton, toff 3μs
iil74_01 IF - Forward Current (mA)
1001010.1
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
V
F
- Forward Voltage (V)
Tamb = - 55 °C
Tamb = 25 °C
Tamb = 85 °C
iil74_02
1001010.1
0.0
0.5
1.0
1.5
NCTR(SAT)
NCTR
IF- LED Current (mA)
NCTR - Normalized (CTR)
Normalized to:
VCE = 10 V,IF= 10 mA
TA= 25 °C
CTRce(sat) V
CE = 0.4 V
iil74_03
1001010.1
0.0
0.5
1.0
1.5
NCTR(SAT)
NCTR
IF- LED Current (mA)
N
CTR
- Normalized (CTR)
Normalized to:
V
CE = 10 V, IF= 10 mA, TA= 25 °C
T
A= 50 °C
CTRce(sat) VCE = 0.4 V
iil74_04
1001010.1
0.0
0.5
1.0
1.5
I
F
- LED Current (mA)
NCTR(SAT)
NCTR
Normalized to:
VCE = 10 V,IF= 10 mA
T
A= 25 °C
CTRce(sat) VCE = 0.4 V
T
A= 70 °C
N
CTR
- Normalized (CTR)
www.vishay.com For technical questions, contact: optocoupleranswers@vishay.com Document Number: 83640
4Rev. 1.7, 27-May-11
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
ILD74, ILQ74
Vishay Semiconductors Optocoupler, Phototransistor Output
(Dual, Quad Channel)
Fig. 5 - Normalized Non-Saturated and Saturated CTR vs.
LED Current
Fig. 6 - Collector Emitter Current vs. Temperature and LED Current
Fig. 7 - Collector Emitter Leakage Current vs.Temperature
Fig. 8 - Normalized CTRcb vs. LED Current and Temperature
Fig. 9 - Collector Base Photocurrent vs. LED Current
Fig. 10 - Normalized Photocurrent vs. IF and Temperature
iil74_05
0.1 1 10 100
1.5
1.0
0.5
0.0
I
F
- LED Current (mA)
N
CTR
- Normalized CTR
NCTR(SAT)
NCTR
Normalized to:
V
CE = 10 V, IF= 10 mA, T
A= 25 °C
CTRce(sat) V
CE = 0.4 V
T
A= 85 °C
iil74_06
60503020100
0
5
10
15
20
25
30
35
50 °C
70 °C
85 °C
IF- LED Current (mA)
I
CE
- Collector Current (mA)
25 °C
40
iil74_07
100806040200- 20
10
10
10
10
10
10
10
10
-2
-1
0
1
2
3
4
5
T
A
- Ambient Temperature (°C)
I
CEO
- Collector Emitter (nA)
VCE = 10 V
Typical
iil74_08
0.1 1 10 100
0.0
0.5
1.0
1.5
25 °C
50 °C 70 °C
IF - Current (mA)
NCTRcb - Normalized CTRcb
IF = 10 mA
Vcb = 9.3 V
TA = 25 °C
Normalized to:
iil74_09
100
1010.1
0.01
0.1
1
10
100
1000
IF - LED Current (mA)
Icb - Collector Base
Photocurrent (µA)
Icb = 1.0357 * IF ^ 1.3631
TA = 25 °C
iil74_10
100
10
1
0.1
0.01
0.1
1
10
IF- LED Current (mA)
Normalized Photcurrent
Normalized to:
IF = 10 mA, TA = 25 °C
NIb, TA = - 20 °C
NIb, TA = 25 °C
NIb, TA = 50 °C
NIb, TA = 70 °C
Document Number: 83640 For technical questions, contact: optocoupleranswers@vishay.com www.vishay.com
Rev. 1.7, 27-May-11 5
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
ILD74, ILQ74
Optocoupler, Phototransistor Output
(Dual, Quad Channel) Vishay Semiconductors
Fig. 11 - Normalized Non-Saturated hFE vs. Base Current and
Temperature
Fig. 12 - Normalized Saturated hFE vs. Base Current and
Temperature
Fig. 13 - Propagation Delay vs. Collector Load Resistor
iil74_11
1 10 100 1000
0.4
0.6
0.8
1.0
1.2
Ib - Base Current (µA)
NhFE - Normalized (hFE)
Ib = 20 µA
VCE = 10 V
Ta = 25 °C
- 20 °C
25 °C
50 °C
70 °C Normalized to:
iil74_12
0.0
0.5
1.0
1.5
25 °C
- 20 °C
50 °C
70 °C
Nh
FE(sat)
- Normalized Saturated h
FE
1 10 100 1000
VCE = 0.4 V
I
b
- Base Current (µA)
Normalized to:
VCE = 10 V
IB= 20 µA
T
A= 25 °C
iil74_13 R
L
- Collector Load Resistor (KΩ)
1001010.1
1
10
100
1000
1.0
1.5
2.0
2.5
tpLH
tpHL
t
pLH
- Propagation Delay (µs)
t
pHL
- Propagation Delay (µs)
TA = 25 °C, IF = 10 mA
VCC = 5 V, Vth = 1.5 V
www.vishay.com For technical questions, contact: optocoupleranswers@vishay.com Document Number: 83640
6Rev. 1.7, 27-May-11
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
ILD74, ILQ74
Vishay Semiconductors Optocoupler, Phototransistor Output
(Dual, Quad Channel)
PACKAGE DIMENSIONS in millimeters
i178006
Pin one ID
6.645 ± 0.165
9.77 ± 0.14
0.95 ± 0.19
4° typ.
2.54 typ.
10°
3° to 9°
7.62 typ.
0.51 ± 0.05
0.25 ± 0.05
3.045 ± 0.255
3.555 ± 0.255
0.70 ± 0.19
6.095 ± 0.255
4321
0.79
1.27
567 8 ISO method A
i178007
6.48
6.81
19.77
20.07
0.76
1.14
4°
2.54 typ.
10°
typ.
3° to 9°
0.46
0.56 0.20
0.30
2.79
3.30
Pin one ID
3.30
3.81
8 7 6 5 4 3 2 1
9 10 11 12 13 14 15 16
7.62 typ.
5.84
6.35
1.27
ISO method A
0.51
0.89
0.79
Option 6 Option 7
20802-21
Option 9
10.16 typ.
7.62 typ.
8 min.
7.62 typ.
4.3 ± 0.3
0.6 min.
10.3 max.
0.7 min.
10.3 max.
7.62 typ.
8 min.0.6 min.
0.1 ± 0.1 3.6 ± 0.3
3.5 ± 0.3
0.1 min.
2.54 R 0.25
1.78
0.76
1.52
8 min.
11.05
2.54 R 0.25
1.78
0.76
1.52
8 min.
11.05
2.54 R 0.25
1.78
0.76
1.52
8 min.
11.05
2.55 ± 0.25
Document Number: 83640 For technical questions, contact: optocoupleranswers@vishay.com www.vishay.com
Rev. 1.7, 27-May-11 7
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
ILD74, ILQ74
Optocoupler, Phototransistor Output
(Dual, Quad Channel) Vishay Semiconductors
PACKAGE MARKING
Notes
• Only options 1 and 7 reflected in the package marking
• The VDE logo is only marked on option 1 parts
• Tape and reel suffix (T) is not part of the package marking
ILD74
V YWW H 68
V
DE
ILQ74
V YWW H 68
V
DE
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
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Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of
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particular 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 operating parameters, including typical parameters, must be validated for each customer application by the customer’s
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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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Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
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