1-108
H
Dual Channel Low Input
Current, High Gain
Optocouplers
Technical Data
Features
High Current Transfer Ratio
1800% Typical
Low Input Current
Requirements 0.5 mA
Low Output Saturation
Voltage 0.1 V
High Density Packaging
Performance Guaranteed
over Temperature
0
C to 70
C
LSTTL Compatible
High Output Current
60 mA
Safety Approval
UL Recognized - 2500 V rms
for 1 Minute and
5000 V rms* for 1 minute
CSA Approved
Available in 8 Pin DIP and
SO-8 Footprint
MIL-STD-1772 Version
Available (HCPL-5730/5731)
Surface Mount Gull Wing
Option Available for 8-Pin
DIP (Option 300)
Applications
Digital Logic Ground
Isolation
Telephone Ring Detector
Level Shifting
EIA RS-232C Line Receiver
Polarity Sensing
Low Input Current Line
Receiver - Long Line or Party
Line
Microprocessor Bus
Isolation
Current Loop Receiver
Line Voltage Status Indicator
-Low Input Power
Dissipation
HCPL-2730 HCPL-0730
HCPL-2731 HCPL-0731
Description
These dual channel optocouplers
contain a separated pair of GaAsP
light emitting diodes optically
coupled to a pair of integrated
high gain photo detectors. They
provide extremely high current
transfer ratio and excellent input-
output common mode transient
immunity. A separate pin for the
photodiodes and first gain stages
(V
CC
) permits lower output satura-
tion voltage and higher speed
operation than possible with
conventional photodarlington
type optocouplers. In addition,
V
CC
may be as low as 1.6 V
Functional Diagram
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage and/or degradation which may be induced by ESD.
*5000 V rms/1 minute withstand voltage rating is for Option 020 (HCPL-2730, HCLP-2731) products only.
A 0.1
F bypass capacitor connected between pins 5 and 8 is recommended.
VO2
VO1
VCC
GND
ANODE 1
CATHODE 1
CATHODE 2
ANODE 2
7
5
6
8
2
3
4
1
TRUTH TABLE
LED
ON
OFF
VO
LOW
HIGH
5965-3597E
1-109
without adversely affecting the
parametric performance.
These dual channel optocouplers
are available in an 8-Pin DIP and
in an industry standard SO-8
package. The following is a cross
reference table listing the 8-Pin
DIP part number and the
electrically equivalent SOIC-8 part
number.
8-Pin DIP
SO-8
HCPL-2730 HCPL-0730
HCPL-2731 HCPL-0731
The SO-8 does not require
"through holes" in a PCB. This
package occupies approximately
one-third the footprint area of the
standard dual-in-line package.
The lead profile is designed to be
compatible with standard surface
mount processes.
Guaranteed operation at low input
currents and the high current
transfer ratio (CTR) reduce the
magnitude and effects of CTR
degradation.
The outstanding high temperature
performance of this split
Darlington type output amplifier
results from the inclusion of an
integrated emitter-base bypass
resistor which shunts photodiode
and first stage leakage currents to
ground.
The HCPL-2731/0731 have a
400% minimum CTR at an input
current of only 0.5 mA making it
ideal for use in low input current
applications such as MOS, CMOS,
and low power logic interfacing or
RS232C data transmission
systems. In addition, the high
CTR and high output current
capability make this device
extremely useful in applications
where a high fanout is required.
Compatibility with high voltage
CMOS logic systems is guaranteed
by the 18 V V
CC
and V
O
specifica-
tions and by testing output high
leakage (I
OH
) at 18 V.
The HCPL-2730/0730 are speci-
fied at an input current of 1.6 mA
and have a 7 V V
CC
and V
O
rating.
The 300% minimum CTR allows
TTL to TTL interfacing at this
input current.
Important specifications such as
CTR, leakage current, and output
saturation voltage are guaranteed
over the 0
C to 70
C temperature
range to allow trouble-free system
operation. Selection for lower
input currents down to 250
A is
available upon request.
Selection Guide
Widebody
8-Pin DIP
Package
Hermetic
(300 Mil)
Small Outline SO-8
(400 mil)
Single and
Dual
Single
Dual
Minimum
Absolute
Dual
Single
Channel
Channel
Channel
Single
Input ON
Maxi-
Channel
Channel
Package
Package
Package
Channel
Current
Minimum
mum
Packages
Package
HCPL-
HCPL-
HCPL-
Package
(I
F
)
CTR
V
CC
HCPL-
6N139
[1]
2731
0701
[1]
0731
HCNW139
[1]
0.5 mA
400%
18 V
6N138
[1]
2730
0700
[1]
0730
HCNW138
[1]
1.6 mA
300%
7 V
HCPL-4701
[1]
4731
[1]
070A
[1]
073A
[1]
40
A
800%
18 V
0.5 mA
300%
20 V
5701
[1]
5700
[1]
5731
[1]
5730
[1]
Note:
1. Technical data are on separate HP publications.
1-110
Ordering Information
Specify Part Number followed by Option Number (if desired).
Example:
HCPL-2731#XXX
020 = 5000 V rms/1 Minute UL Rating Option.*
300 = Gull Wing Surface Mount Option, 50 per tube.**
500 = Tape and Reel Packaging Option, 1000 per reel.
Option data sheets available. Contact your Hewlett-Packard sales representative or authorized distributor for
information.
*For HCPL-2731 and HCPL-2730 only.
**Gull wing surface mount option applies to through hole parts only.
Schematic
IF2
6
5
GND
3
4
VO2
VF2
IO2
+
IF1
8
7
V
CC
1
2
V
O1
ICC
V
F1
IO1
+
HCPL-2731/0731 SHIELD
USE OF A 0.1 F BYPASS CAPACITOR CONNECTED
BETWEEN PINS 5 AND 8 IS RECOMMENDED (SEE NOTE 8)
1-111
9.65 0.25
(0.380 0.010)
1.78 (0.070) MAX.
1.19 (0.047) MAX.
HP XXXXZ
YYWW
DATE CODE
1.080 0.320
(0.043 0.013)
2.54 0.25
(0.100 0.010)
0.51 (0.020) MIN.
0.65 (0.025) MAX.
4.70 (0.185) MAX.
2.92 (0.115) MIN.
DIMENSIONS IN MILLIMETERS AND (INCHES).
5
6
7
8
4
3
2
1
5 TYP.
OPTION CODE*
UL
RECOGNITION
UR
0.254
+ 0.076
- 0.051
(0.010
+ 0.003)
- 0.002)
7.62 0.25
(0.300 0.010)
6.35 0.25
(0.250 0.010)
TYPE NUMBER
*MARKING CODE LETTER FOR OPTION NUMBERS
"L" = OPTION 020
OPTION NUMBERS 300 AND 500 NOT MARKED.
Package Outline Drawings
8-Pin DIP Package (HCPL-2731/HCPL-2730)
8-Pin DIP Package with Gull Wing Surface Mount Option 300 (HCPL-2731/HCPL-2730)
0.635 0.25
(0.025 0.010)
12 NOM.
9.65 0.25
(0.380 0.010)
0.635 0.130
(0.025 0.005)
7.62 0.25
(0.300 0.010)
5
6
7
8
4
3
2
1
9.65 0.25
(0.380 0.010)
6.350 0.25
(0.250 0.010)
1.016 (0.040)
1.194 (0.047)
1.194 (0.047)
1.778 (0.070)
9.398 (0.370)
9.906 (0.390)
4.826
(0.190)
TYP.
0.381 (0.015)
0.635 (0.025)
PAD LOCATION (FOR REFERENCE ONLY)
1.080 0.320
(0.043 0.013)
4.19
(0.165)
MAX.
1.780
(0.070)
MAX.
1.19
(0.047)
MAX.
2.54
(0.100)
BSC
DIMENSIONS IN MILLIMETERS (INCHES).
LEAD COPLANARITY = 0.10 mm (0.004 INCHES).
0.254
+ 0.076
- 0.051
(0.010
+ 0.003)
- 0.002)
1-112
Small Outline SO-8 Package (HCPL-0731/HCPL-0730)
Note: Use of nonchlorine activated fluxes is highly recommended.
Regulatory Information
The HCPL-2731/2730 have been
approved by the following
organizations:
UL
Recognized under UL 1577,
Component Recognition
Program, File E55361.
240
T = 115C, 0.3C/SEC
0
T = 100C, 1.5C/SEC
T = 145C, 1C/SEC
TIME MINUTES
TEMPERATURE C
220
200
180
160
140
120
100
80
60
40
20
0
260
1
2
3
4
5
6
7
8
9
10
11
12
XXX
YWW
8
7
6
5
4
3
2
1
5.842 0.203
(0.236 0.008)
3.937 0.127
(0.155 0.005)
0.381 0.076
(0.016 0.003)
1.270
(0.050)
BSG
5.080 0.127
(0.200 0.005)
3.175 0.127
(0.125 0.005)
1.524
(0.060)
45 X
0.432
(0.017)
0.228 0.025
(0.009 0.001)
TYPE NUMBER
(LAST 3 DIGITS)
DATE CODE
0.305
(0.012)
MIN.
DIMENSIONS IN MILLIMETERS (INCHES).
LEAD COPLANARITY = 0.10 mm (0.004 INCHES).
0.152 0.051
(0.006 0.002)
7
Solder Reflow Temperature Profile (HCPL-073X and Gull Wing Surface Mount Option 300 Parts).
CSA
Approved under CSA Component
Acceptance Notice #5, File CA
88324.
1-113
Absolute Maximum Ratings
(No Derating Required up to 85
C)
Parameter
Symbol
Min.
Max.
Units
Storage Temperature
T
S
-55
125
C
Operating Temperature
T
A
-40
85
C
Average Forward Input Current
I
F(AVG)
20
mA
Peak Forward Input Current
I
FPK
40
mA
(50% Duty Cycle, 1 ms Pulse Width)
Reverse Input Voltage (Each Channel)
V
R
5
V
Input Power Dissipation (Each Channel)
P
I
35
mW
Output Current (Each Channel)
I
O
60
mA
Supply Voltage and Output Voltage
V
CC
-0.5
18
V
(HCPL-2731, HCPL-0731)
(V
CC
- Pin 8-5, V
O
- Pin 7,6-5) -Note 1
Supply Voltage and Output Voltage
V
CC
-0.5
7
V
(HCPL-2730, HCPL-0730)
(V
CC
- Pin 8-5, V
O
- Pin 7,6-5) -Note 1
Output Power Dissipation (Each Channel) -Note 12
P
O
100
mW
Total Power Dissipation (Each Channel)
P
T
135
mW
Lead Solder Temperature (for Through Hole Devices)
260
C for 10 sec., 1.6 mm below seating plane
Reflow Temperature Profile
See Package Outline Drawings section
(for SOIC-8 and Option #300)
Insulation Related Specifications (HCPL-2731/2730/0731/0730)
8-Pin DIP
(300 Mil)
SO-8
Parameter
Symbol
Value
Value
Units
Conditions
Minimum External Air
L(101)
7.1
4.9
mm
Measured from input terminals to
Gap (External
output terminals, shortest distance
Clearance)
through air.
Minimum External
L(102)
7.4
4.8
mm
Measured from input terminals to
Tracking (External
output terminals, shortest distance
Creepage)
path along body.
Minimum Internal Plastic
0.08
0.08
mm
Through insulation distance, conductor
Gap (Internal Clearance)
to conductor, usually the direct
distance between the photoemitter and
photodetector inside the optocoupler
cavity.
Tracking Resistance
CTI
200
200
Volts
DIN IEC 112/ VDE 0303 Part 1
(Comparative Tracking
Index)
Isolation Group
IIIa
IIIa
Material Group DIN VDE 0110
Option 300 surface mount classification is Class A in accordance with CECC 00802.
1-114
Recommended Operating Conditions
Parameter
Symbol
Min.
Max.
Units
Power Supply Voltage (HCPL-2731/HCPL-0731)
V
CC
4.5
18
V
Power Supply Voltage (HCPL-2730/HCPL-0730)
V
CC
4.5
7
V
Forward Input Current (ON)
I
F(ON)
0.5
12
mA
Forward Input Voltage (OFF)
V
F(OFF)
0
0.8
V
Operating Temperature
T
A
0
70
C
1-115
Electrical Specifications
0
C
T
A
70
C, 4.5 V
V
CC
18 V, 0.5 mA
I
F(ON)
12 mA, 0 V
V
F(OFF)
0.8 V, unless otherwise
specified. All Typicals at T
A
= 25
C. (See note 8.)
Device
Parameter
Sym.
HCPL-
Min. Typ.*
Max. Units
Test Conditions
Fig.
Note
Current
CTR
2731
400
1800
5000
%
I
F
= 0.5 mA
V
CC
= 4.5
2, 3
2
Transfer
0731
V
O
= 0.4 V
500
1600
2600
I
F
= 1.6 mA
2730/0730
300
1600
2600
I
F
= 1.6 mA
Logic Low
V
OL
2731
0.1
0.4
V
I
F
= 1.6 mA,
V
CC
= 4.5 V
1
Output
0731
I
O
= 8 mA
Voltage
0.1
0.4
I
F
= 5.0 mA,
I
O
= 15 mA
0.2
0.4
I
F
= 12 mA,
I
O
= 24 mA
2730/0730
0.1
0.4
I
F
= 1.6 mA,
I
O
= 4.8 mA
Logic High
I
OH
2731/0731
0.05
100
A
V
O
= V
CC
= 18 V
I
F
= 0 mA
2
Output
Current
2730/0731
0.1
250
V
O
= V
CC
= 7 V
Logic Low
I
CCL
2731/0731
1.2
3
mA
V
CC
= 18 V I
F1
= I
F2
= 1.6 mA
5
Supply
V
01
= V
02
= Open
Current
2730/0730
0.9
V
CC
= 7 V
Logic High
I
CCH
2731/0731
0.005
20
A
V
CC
= 18 V I
F1
= I
F2
= 0 mA,
5
Supply
V
01
= V
02
= Open
Current
2730/0730
0.004
V
CC
= 7 V
Input
V
F
1.4
1.7
V
T
A
= 25
C
4
Forward
Voltage
1.75
I
F
= 1.6 mA
Input
BV
R
5.0
V
I
R
= 10
A, T
A
= 25
C
2
Reverse
Breakdown
Voltage
Temperature
V
F
-1.8
mV/
C I
F
= 1.6 mA
Coefficient
T
A
of Forward
Voltage
Input
C
IN
60
pF
f = 1 MHz, V
F
= 0
2
Capacitance
*All typical values at T
A
= 25
C and V
CC
= 5 V, unless otherwise noted.
Ratio
1-116
Device
Parameter
Sym.
HCPL- Min.
Typ.*
Max.
Units
Test Conditions
Fig.
Note
Propagation Delay
t
PHL
2731
25
100
s
T
A
= 25
C
6, 7,
2
Time to Logic
0731
8, 9
Low at Output
120
I
F
= 0.5 mA
Rl = 4.7 k
2730
5
20
T
A
= 25
C
2731
0730
0731
25
I
F
= 1.6 mA, Rl = 2.2 k
0.5
2
T
A
= 25
C
3
I
F
= 12 mA, Rl = 270
Propagation Delay
t
PLH
2731
10
60
s
T
A
= 25
C
7, 8,
2
Time to Logic
0731
9
High at Output
90
I
F
= 0.5 mA, Rl = 4.7 k
2730
10
35
T
A
= 25
C
2731
0730
0731
50
I
F
= 1.6 mA, Rl = 2.2 k
1
10
T
A
= 25
C
15
I
F
= 12 mA, Rl = 270
Common Mode
|CM
H
|
1000
10000
V/
s
I
F
= 0 mA, T
A
= 25
C,
10
2, 6,
Transient Immunity
Rl = 2.2 k
7
at Logic High
|V
CM
| = 10 V
p-p
Output
Common Mode
|CM
L
1000
10000
V/
s
I
F
= 1.6 mA, T
A
= 25
C,
Transient Immunity
Rl = 2.2 k
at Logic Low Level
|V
CM
| = 10 V
p-p
Output
*All typical values at T
A
= 25
C and V
CC
= 5 V, unless otherwise noted.
Switching Specifications (AC)
Over recommended operating conditions (T
A
= 0
C to 70
C), V
CC
= 5 V, unless otherwise specified.
(See note 8.)
1-117
Package Characteristics
Device
Parameter
Symbol HCPL- Min. Typ.* Max. Units
Test Conditions
Fig.
Note
Input-Output Momentary
V
ISO
2500
V rms
RH
50%,
4, 9
Withstand Voltage**
t = 1 min.,
Option 020
2730
5000
4, 10
2731
Resistance
R
I-O
10
12
V
I-O
= 500 VDC
4
(Input-Output)
RH
45%
Capacitance
C
I-O
0.6
pF
f = 1 MHz
11
(Input-Output)
Input-Input Insulation
I
I-I
0.005
A
RH
45%
5
Leakage Current
V
I-I
= 500 VDC
Input-Input Insulation
R
I-I
10
11
5
Leakage Current
Capacitance
C
I-I
2730
0.03
pF
5
(Input-Input)
2731
0730
0.25
0731
*All Typical values at T
A
= 25
C unless otherwise noted.
**The Input-Output Momentary Withstand Voltage is a dielectric voltage rating that should not be interpreted as an input-output
continuous voltage rating. For the continuous voltage rating refer to the VDE 0884 Insulation Characteristics Table (if appli-
cable), your equipment level safety specification or HP Application Note 1074 entitled "Optocoupler Input-Output Endurance
Voltage."
Notes:
1. Pin 5 should be the most negative
voltage at the detector side.
2. Each channel.
3. DC CURRENT TRANSFER RATIO
(CTR) is defined as the ratio of output
collector current, I
O
, to the forward
LED input current, I
F
, times 100%.
4. Device considered a two-terminal
device: pins 1, 2, 3, and 4 shorted
together, and pins 5, 6, 7, and 8
shorted together.
5. Measured between pins 1 and 2
shorted together, and pins 3 and 4
shorted together.
6. Common mode transient immunity in a
Logic High level is the maximum
tolerable (positive) dV
CM
/dt of the
T
A
= 25
C
common mode pulse, V
CM
, to assure
that the output will remain in a Logic
High state (i.e., V
O
> 2.0 V). Common
mode transient immunity in a Logic
Low level is the maximum tolerable
(negative) dV
CM
/dt of the common
mode pulse, V
CM
, to assure that the
output will remain in a Logic Low state
(i.e., V
O
< 0.8 V).
7. In applications where dV/dt may
exceed 50,000 V/
s (such as static
discharge) a series resistor, R
CC
,
should be included to protect the
detector IC from destructively high
surge currents. The recommended
value is R
CC
= 110
.
8. Use of a 0.1
F bypass capacitor
connected between pins 5 and 8
adjacent to the device is
recommended.
9. In accordance with UL 1577, each
optocoupler is proof tested by
applying an insulation test voltage
> 3000 V rms for 1 second (leakage
detection current limit, I
I-O
< 5
A).
10. In accordance with UL 1577, each
optocoupler is proof tested by
applying an insulation test voltage
> 6000 V rms for 1 second (leakage
detection current limit, I
I-O
< 5
A).
11. Measured between the LED anode and
cathode shorted together and pins 5
through 8 shorted together.
12. Derate linearly above 65
C free-air
temperature at a rate of 2.3 mW/
C for
the SO-8 package.
1-118
Figure 7. Propagation Delay vs.
Temperature.
Figure 8. Propagation Delay vs. Input
Diode Forward Current.
Figure 6. Propagation Delay to Logic
Low vs. Pulse Period.
Figure 4. Input Diode Forward
Current vs. Forward Voltage.
Figure 5. Supply Current per
Channel vs. Input Diode Forward
Current.
Figure 1. DC Transfer Characteristics.
Figure 2. Current Transfer Ratio vs.
Forward Current.
Figure 3. Output Current vs. Input
Diode Forward Current.
0
1
2
VO OUTPUT VOLTAGE V
I
O
OUTPUT CURRENT mA
60
30
0
I
F
= 5.0 mA
I
F
= 4.5 mA
I
F
= 4.0 mA
I
F
= 3.5 mA
I
F
= 1.0 mA
TA = 25 C
VCC = 5.0 V
I
F
= 0.5 mA
I
F
= 1.5 mA
I
F
= 2.0 mA
I
F
= 2.5 mA
I
F
= 3.0 mA
IF FORWARD CURRENT mA
2500
2000
1000
500
0.1
1.0
CTR CURRENT TRANSFER RATIO %
10
1500
0
VCC = 5.0 V
VO = 0.4 V
TA = 25 C
TA = 0 C
TA = 70 C
TA = 85 C
TA = -40 C
IF INPUT DIODE FORWARD CURRENT mA
100
10
0.1
0.1
1
10
I
O
OUTPUT CURRENT mA
1.0
TA = 85 C
TA = 25 C
TA = -40 C
VCC = 5.0 V
VO = 0.4 V
IF INPUT DIODE FORWARD CURRENT mA
50
40
20
10
0
2
4
6
t
P
PROPAGATION DELAY s
10
8
30
0
60
VCC = 5 V
TA = 25 C
70
tPHL RL = 2.2 k
OR 4.7 k
tPLH RL = 4.7 k
tPLH RL = 2.2 k
0
50
TA TEMPERATURE
C
t P
PROPAGATION DELAY
s
18
0
10
20 30 40
60
70 80
90
6
9
12
15
21
24
27
30
33
36
HCPL-2731/0731
(I
F
= 0.5 mA, R
L
= 4.7 k
)
HCPL-2730/0730
(I
F
= 1.6 mA, R
L
= 2.2 k
)
tPHL
3
tPLH
tPLH
t
PHL
VF FORWARD VOLTAGE V
100
10
0.1
0.01
1.1
1.2
1.3
1.4
I F
FORWARD CURRENT mA
1.6
1.5
1.0
0.001
1000
IF
T = 25C
A
VF
+
IF INPUT DIODE FORWARD CURRENT mA
100
10
0.1
1.0
I
CC
(PER CHANNEL) SUPPLY CURRENT mA
10
1.0
TA = 25 C
100
0.1
HCPL-2731
VCC = 18 V
HCPL-2730
HCPL-2731
VCC = 7 V
T INPUT PULSE PERIOD ms
100
10
0.01
0.1
t
PHL
PROPAGATION DELAY
TO LOGIC LOW s
1.0
1.0
TA = 25 C
10
0.1
HCPL-2731/0731
IF = 0.5 mA
RL = 4.7 k
HCPL-2730/0730
HCPL-2731/0731
IF = 1.6 mA
RL = 2.2 k
0
V
O
I
F
V
OL
t
PHL
T
50 s
1.5 V
5 V
1-119
Figure 10. Test Circuit for Transient Immunity and Typical Waveforms.
Figure 9. Switching Test Circuit.
VO
PULSE GEN.
Z = 50
t = 5 ns
O
r
I MONITOR
F
IF
0.1F
L
R
+5 V
C = 15 pF
L
RM
7
5
6
8
2
3
4
1
1.5 V
5 V
tPHL
O
V
IF
OL
V
0
5 V
tPLH
1.5 V
OL
V
O
V
IF
VO
IF
0.1 F
L
R
+5 V
A
B
PULSE GEN.
VCM
+
VFF
CC
R
(SEE NOTE 7)
110
O
V
5 V
OL
V
O
V
10 V
0 V
10%
90% 90%
10%
SWITCH AT A: I = 0 mA
F
SWITCH AT B: I = 1.6 mA
F
CM
V
tr
tf
t , t = 16 ns
r
f
7
5
6
8
2
3
4
1
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