HCPL3700

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL3700 is a voltage and current threshold detection optocoupler featuring an AlGaAs LED connected to a threshold sensing input buffer IC. It provides optical coupling to a high-gain Darlington output compatible with TTL and CMOS logic levels. The device supports AC or DC inputs and allows flexible threshold level adjustment via a single external resistor across wide input voltage ranges.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrated threshold sensing input buffer for precise voltage and current detection
• High-gain Darlington output stage ensuring reliable signal transmission
• Logic level compatibility with both TTL and CMOS standards
• Flexible threshold adjustment capability using a single external resistor

Transistor, Photovoltaic Output Optoisolators Applications

• Low voltage detection circuits
• AC/DC voltage monitoring within 5V to 240V ranges
• Relay contact status monitoring
• Current sensing applications
• Microprocessor interface systems

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix code (e.g., M, SDVM) as it determines package type and availability. Confirm RoHS compliance status and lead times directly with authorized distributors. Check for obsolete status notifications from onsemi before finalizing procurement plans.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when programmable threshold detection is required for AC or DC signals. Ensure the external resistor value aligns with the desired trip point. Verify that the operating temperature range meets system requirements, typically 0°C to 70°C for standard variants.

Transistor, Photovoltaic Output Optoisolators Part Context

Part of the HCPL series of optocouplers designed for industrial control and interface applications. It bridges analog input signals to digital logic outputs while maintaining electrical isolation. The series emphasizes reliability in noisy environments through robust optical coupling mechanisms.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

HCPL3700M is listed as an available substitute by the manufacturer. Verify pinout compatibility and electrical specifications before substitution. Other family members may require circuit adjustments due to differing package styles or performance characteristics.