HCPL3700SD

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL3700SD is a logic output optocoupler from onsemi, featuring an AlGaAs LED and a threshold sensing input buffer IC. It provides AC/DC to logic interface capabilities with open collector outputs. Key electrical parameters include a maximum propagation delay of 40 us, rise time of 45 us, and fall time of 0.5 us. The device supports a maximum continuous output current of 30 mA and has an insulation voltage of 5000 Vrms. It operates within a temperature range of 0°C to +70°C and is housed in an 8-pin SMD package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a threshold sensing input buffer IC for flexible voltage level detection
• Provides logic level compatibility with TTL and CMOS standards
• Features an AlGaAs LED connected to a high-gain Darlington output

Transistor, Photovoltaic Output Optoisolators Applications

• Low voltage detection circuits
• AC/DC voltage monitoring in the 5V to 240V range
• Relay contact monitoring systems
• Current detection interfaces
• Microprocessor interface applications

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'SD' confirms the surface mount 8-pin package configuration. Ensure the procurement matches the active status or obsolescence notice if applicable. Confirm RoHS compliance details against the latest manufacturer documentation. Validate that the reel packaging quantity aligns with production requirements. Check for any specific handling precautions related to the optical coupling components.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when programmable threshold detection is required for AC or DC signals. It is suitable for designs needing isolation between high-voltage inputs and low-voltage logic outputs. Consider the 5000 Vrms insulation rating for safety-critical industrial applications. Evaluate the 40 us propagation delay against system timing constraints. Ensure the open collector output type matches the downstream logic circuit requirements.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL3700 series of voltage/current threshold detection optocouplers. The series includes variants such as HCPL3700M and HCPL3700VM, differing primarily in packaging and termination styles. The HCPL3700SD specifically denotes the surface mount variant manufactured by onsemi. It shares core functional characteristics with other members of the family while adapting to PCB assembly needs.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

HCPL-3700-000E is a documented alternative from Broadcom/Avago. Verify pinout compatibility and electrical parameter alignment before substitution. Note differences in propagation delay and insulation voltage ratings between manufacturers.