HCPL-4731-020E

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-4731-020E is a dual-channel high-speed optocoupler manufactured by Broadcom Limited. It features photodarlington outputs and operates within a temperature range of -40°C to +85°C. The device provides an isolation voltage of 5000 Vrms, with a data rate of 100 kb/s. Key electrical parameters include a forward current of 10 mA, a forward voltage of 1.2 V, and a maximum output current of 60 mA. The current transfer ratio ranges from 600% to 8000% at 500 µA input. Power dissipation is rated at 115 mW. It is housed in an 8-pin PDIP Gull Wing package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Dual-channel configuration for simultaneous signal isolation
• High-gain photodarlington output stage
• TTL-compatible input interface
• UL recognized safety insulation

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial networking systems
• General-purpose digital isolation
• Microcontroller interface circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix '020' against official Broadcom documentation to confirm pinout compatibility and insulation ratings, as variations exist within the HCPL-4731 family. Ensure the component meets RoHS requirements if applicable to your assembly process. Cross-reference datasheet revision dates to validate parameter accuracy before finalizing procurement specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when dual-channel isolation with high gain is required for low-power applications. The photodarlington output suits interfaces needing higher drive capability than standard transistor outputs. Verify that the 100 kb/s data rate aligns with system timing requirements. Consider the 8-pin DIP package constraints for PCB layout and thermal management during selection.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL-4701/-4731 series of very low power consumption, high-gain optocouplers. The series includes single-channel (HCPL-4701) and dual-channel variants. These devices are designed for applications requiring electrical isolation between diverse voltage levels while maintaining low power consumption profiles typical of modern industrial and communication equipment.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The HCPL-4731#020 is pin-compatible with other HCPL-4731 variants in the same package. Check datasheets for specific substitution candidates like the HCPL-073A, ensuring isolation voltage and CTR specifications match the design requirements.