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HCPL-0370 Datasheet, PDF (1/13 Pages) Agilent(Hewlett-Packard) – AC/DC to Logic Interface Optocouplers | |||
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AC/DC to Logic Interface
Optocouplers
Technical Data
HCPL-0370
HCPL-3700
HCPL-3760
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
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.
Functional Diagram
AC 1
DC+ 2
DC- 3
AC 4
HCPL-0370/3700/3760
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
8 VCC
7 NC
6 VO
5 GND
TRUTH TABLE
(POSITIVE LOGIC)
INPUT OUTPUT
H
L
L
H
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.
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