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HCPL-3700

Part # HCPL-3700
Description OPTOCOUPL AC/DC-IN 1CH DARL W/BASE DC-OUT 8PDIP - Rail/Tub
Category IC
Availability In Stock
Qty 19
Qty Price
1 - 3 $2.50892
4 - 7 $1.99574
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16 + $1.55857
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Hewlett-Packard
Date Code: 8631
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Date Code: 0438
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Date Code: 8615
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

1-348
H
AC/DC to Logic Interface
Optocouplers
Technical Data
HCPL-3700
HCPL-3760
Description
The HCPL-3700 and HCPL-3760
are voltage/current threshold
detection optocouplers. The
HCPL-3760 is a low-current
version of the HCPL-3700. To
obtain lower current operation,
the HCPL-3760 uses a high-
efficiency AlGaAs LED which
provides higher light output at
lower drive currents. Both
devices utilize threshold sensing
input buffer ICs which permit
control of threshold levels over a
wide range of input voltages with
a single external resistor.
Features
• Standard (HCPL-3700) and
Low Input Current
(HCPL-3760) Versions
• AC or DC Input
• Programmable Sense Voltage
• Hysteresis
• Logic Compatible Output
• Thresholds Guaranteed over
Temperature
• Thresholds Independent of
LED Optical Parameters
• Recognized under UL 1577
and CSA Approved for
Dielectric Withstand Proof
Test Voltage of 2500 Vac, 1
Minute
Applications
• Limit Switch Sensing
• Low Voltage Detector
• 5 V-240 V AC/DC Voltage
Sensing
• Relay Contact Monitor
• Relay Coil Voltage Monitor
• Current Sensing
• Microprocessor Interfacing
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.
The input buffer incorporates
several features: hysteresis for
extra noise immunity and
switching immunity, a diode
bridge for easy use with ac input
signals, and internal clamping
Functional Diagram
1
2
3
4
8
7
6
5
AC
DC+
DC-
AC
V
CC
V
O
GND
TRUTH TABLE
(POSITIVE LOGIC)
INPUT
H
L
OUTPUT
L
H
NC
5965-3582E
1-349
diodes to protect the buffer and
LED from a wide range of over-
voltage and over-current
transients. Because threshold
sensing is done prior to driving
the LED, variations in optical
coupling from the LED to the
detector will have no effect on the
threshold levels.
The HCPL-3700's input buffer IC
has a nominal turn on threshold
of 2.5 mA (I
TH
+) and 3.7 volts
(V
TH
+).
The buffer IC for the HCPL-3760
was redesigned to permit a lower
input current. The nominal turn
on threshold for the HCPL-3760
is 1.2 mA (I
TH
+) and 3.7 volts
(V
TH
+).
The high gain output stage
features an open collector output
providing both TTL compatible
saturation voltages and CMOS
compatible breakdown voltages.
By combining several unique
functions in a single package, the
user is provided with an ideal
component for industrial control
computer input boards and other
applications where a predeter-
mined input threshold level is
desirable.
Ordering Information
Specify Part Number followed by Option Number (if desired)
Example
HCPL-3700#XXX
300 = Gull Wing Surface Mount Option
500 = Tape/Reel Package Option (1 K min.)
Option data sheets available. Contact your Hewlett-Packard sales representative or authorized distributor for
information.
Schematic
1-350
Package Outline Drawings
Standard DIP Package
Gull Wing Surface Mount Option 300
9.40 (0.370)
9.90 (0.390)
1.78 (0.070) MAX.
1.19 (0.047) MAX.
HP XXXX
YYWW
DATE CODE
0.76 (0.030)
1.40 (0.056)
2.28 (0.090)
2.80 (0.110)
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).
5678
4321
0.20 (0.008)
0.33 (0.013)
6.10 (0.240)
6.60 (0.260)
5° TYP.
7.36 (0.290)
7.88 (0.310)
1
2
3
4
8
7
6
5
AC
AC
DC+
DC-
GND
V
CC
NC
V
O
PIN ONE
TYPE NUMBER
UL
RECOGNITION
UR
0.635 ± 0.25
(0.025 ± 0.010)
12° NOM.
0.20 (0.008)
0.33 (0.013)
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.
2.540
(0.100)
BSC
DIMENSIONS IN MILLIMETERS (INCHES).
TOLERANCES (UNLESS OTHERWISE SPECIFIED):
LEAD COPLANARITY 
MAXIMUM: 0.102 (0.004)
xx.xx = 0.01
xx.xxx = 0.005
HP XXXX
YYWW
DATE CODE
TYPE NUMBER
UL
RECOGNITION
UR
MOLDED
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