AC/DC to Logic Interface
Optocouplers
Technical Data
HCPL-0370
HCPL-3700
HCPL-3760
Description
The HCPL-0370/3700 and
HCPL-3760 are voltage/current
threshold detection optocouplers.
The HCPL-3760 is a low-current
version of the HCPL-0370/3700.
To obtain lower current
operation, the HCPL-3760 uses a
high-efficiency AlGaAs LED
which provides higher light
output at lower drive currents.
The 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-0370/3700)
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 3750 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
VCC
VO
GND
TRUTH TABLE
(POSITIVE LOGIC)
INPUT
H
L
OUTPUT
L
H
NC
HCPL-0370/3700/3760
2
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-0370/3700'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-0370#XXXX
No option = SO8 Package.
500 = Tape/Reel Package Option (1 K min.).
XXXE = Lead Free Option.
HCPL-37x0#XXXX
020 = 5000 V rms/1 minute UL Rating Option.
300 = Gull Wing Surface Mount Option.
500 = Tape/Reel Package Option (1 K min.).
XXXE = Lead Free Option.
Option data sheets available. Contact your Agilent sales representative or authorized distributor for information.
Remarks: The notation "#" is used for existing products, while (new) products launched since 15th July 2001 and lead free option will use ""
Schematic
3
Package Outline Drawings
Standard DIP Package (HCPL-3700/3760)
Gull Wing Surface Mount Option 300 (HCPL-3700/3760)
9.40 (0.370)
9.90 (0.390)
1.78 (0.070) MAX.
1.19 (0.047) MAX.
A 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).
NOTE: FLOATING LEAD PROTRUSION IS 0.25 mm (10 mils) MAX.
5
6
7
8
4
3
2
1
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
VCC
NC
VO
PIN ONE
TYPE NUMBER
UL
RECOGNITION
UR
3.56 0.13
(0.140 0.005)
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)
1.080 0.320
(0.043 0.013)
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)
NOTE: FLOATING LEAD PROTRUSION IS 0.25 mm (10 mils) MAX.
xx.xx = 0.01
xx.xxx = 0.005
A XXXX
YYWW
DATE CODE
TYPE NUMBER
UL
RECOGNITION
UR
MOLDED
1.016 (0.040)
1.27 (0.050)
10.9 (0.430)
2.0 (0.080)
LAND PATTERN RECOMMENDATION
3.56 0.13
(0.140 0.005)
4
Package Outline Drawings, continued
Small Outline SO-8 Package (HCPL-0370)
XXX
YWW
8
7
6
5
4
3
2
1
5.994 0.203
(0.236 0.008)
3.937 0.127
(0.155 0.005)
0.406 0.076
(0.016 0.003)
1.270
(0.050)
BSC
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.
TOTAL PACKAGE LENGTH (INCLUSIVE OF MOLD FLASH)
5.207 0.254 (0.205 0.010)
DIMENSIONS IN MILLIMETERS (INCHES).
LEAD COPLANARITY = 0.10 mm (0.004 INCHES) MAX.
NOTE: FLOATING LEAD PROTRUSION IS 0.15 mm (6 mils) MAX.
0.203 0.102
(0.008 0.004)
7
PIN ONE
0 ~ 7
*
*
7.49 (0.295)
1.9 (0.075)
0.64 (0.025)
LAND PATTERN RECOMMENDATION
5
Regulatory Information
The HCPL-0370/3700/3760 has
been approved by the following
organizations:
UL
Recognized under UL 1577,
component recognition program,
File E55361 (HCPL-0370
pending).
CSA
Approved under CSA Component
Acceptance Notice #5, File CA
88324.
Solder Reflow Thermal Profile
Recommended Pb-Free IR Profile
0
TIME (SECONDS)
TEMPERATURE (
C)
200
100
50
150
100
200
250
300
0
30
SEC.
50 SEC.
30
SEC.
160C
140C
150C
PEAK
TEMP.
245C
PEAK
TEMP.
240C
PEAK
TEMP.
230C
SOLDERING
TIME
200C
PREHEATING TIME
150C, 90 + 30 SEC.
2.5C 0.5C/SEC.
3C + 1C/0.5C
TIGHT
TYPICAL
LOOSE
ROOM
TEMPERATURE
PREHEATING RATE 3C + 1C/0.5C/SEC.
REFLOW HEATING RATE 2.5C 0.5C/SEC.
217 C
RAMP-DOWN
6 C/SEC. MAX.
RAMP-UP
3 C/SEC. MAX.
150 - 200 C
260 +0/-5 C
t 25 C to PEAK
60 to 150 SEC.
20-40 SEC.
TIME WITHIN 5 C of ACTUAL
PEAK TEMPERATURE
tp
ts
PREHEAT
60 to 180 SEC.
tL
TL
Tsmax
Tsmin
25
Tp
TIME
TEMPERA
TURE
NOTES:
THE TIME FROM 25 C to PEAK TEMPERATURE = 8 MINUTES MAX.
Tsmax = 200 C, Tsmin = 150 C
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