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HCPL-0370

Agilent
Part Number HCPL-0370
Manufacturer Agilent
Description (HCPL-xxx0) AC/DC to Logic Interface Optocouplers
Published Aug 5, 2011
Detailed Description AC/DC to Logic Interface Optocouplers Technical Data HCPL-0370 HCPL-3700 HCPL-3760 Features • Standard (HCPL-0370/3700)...
Datasheet PDF File HCPL-0370 PDF File

HCPL-0370
HCPL-0370

Overview
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 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.
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 Functional Diagram 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 AC 1 8 VCC DC+ 2 7 NC DC- 3 6 VO AC 4 5 GND TRUTH TABLE (POSITIVE LOGIC) INPUT OUTPUT L H H L 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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net 2 diodes to protect the buffer and LED from a wide range of overvoltage 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 (ITH +) and 3.
7 vol...


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