HCPL-3700-000E, Optocoupler, Darlington Output, 1 Channel, DIP, 8 Pins, 3.75 kV

Product Overview

The HCPL-3700-000E is an isolated voltage/current threshold detection optocoupler, providing precise sensing and reliable performance. It features a Darlington output, 1 channel, and a threshold sensing input buffer IC for exceptional electrical separation and interference suppression. It comes in a DIP package with 8 pins and 3.75 kV isolation.

Key Features

- AC or DC input
- Programmable Sense Voltage
- Hysteresis for enhanced noise immunity
- 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
- RoHS6 Compliant
- Input buffer features a diode bridge for AC input signals and internal clamping diodes for over-voltage and over-current transient protection.

Applications

- Limit Switch Sensing
- Low Voltage Detector
- AC mains and DC link voltage detection
- Relay Contact Monitor
- Relay Coil Voltage Monitor
- Current Sensing
- Microprocessor Interfacing
- Industrial controls

Benefits and Use Cases

The HCPL-3700-000E is expertly designed for applications demanding precise voltage or current threshold detection combined with robust electrical isolation. Its advanced features ensure dependable performance, even in challenging industrial environments characterized by high noise levels. The input buffer's built-in hysteresis and transient protection mechanisms contribute to exceptionally stable switching behavior and extended device longevity. This optocoupler is an ideal solution for sensing and instrumentation applications where accurate threshold detection is of paramount importance.

Additional Information

The device utilizes an AlGaAs LED connected to a threshold sensing input buffer IC, optically coupled to a high gain Darlington output. For optimal performance, a 0.1 µF bypass capacitor should be connected between pins 8 and 5.