HCPL-4701#320

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-4701#320 is a single-channel high-speed optocoupler from Broadcom Limited, featuring an AlGaAs LED and integrated photodarlington output. It provides a typical current transfer ratio of 3500% with a maximum of 25000%. The device supports data rates up to 100 kb/s and operates with a low input forward current of 40 µA. It offers an isolation voltage of 5000 Vrms and functions within a temperature range of -40°C to +85°C. The component is housed in an 8-pin gull-wing surface-mount package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Ultra-low power consumption with input drive current as low as 40 µA
• High gain photodarlington output for superior signal integrity
• Robust electrical isolation rated at 5000 Vrms
• Surface-mount gull-wing packaging for compact board integration

Transistor, Photovoltaic Output Optoisolators Applications

• Battery-powered equipment requiring minimal input current
• ISDN telephone interface circuits
• Ground isolation for TTL and CMOS logic families
• EIA RS-232C line receiver applications

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix #320 indicates leaded content and RoHS non-compliance, as this variant differs from standard RoHS versions. Confirm availability status, as certain HCPL-4701 models are subject to discontinuation notices. Ensure the procurement order explicitly matches the gull-wing package type to avoid confusion with DIP variants.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when low input current is critical for battery life or weak signal driving. The high CTR ensures reliable switching even at minimal drive levels. Verify that the 5000 Vrms isolation rating meets system safety requirements. Ensure the surface-mount form factor aligns with the PCB layout constraints compared to through-hole alternatives.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL series of high-speed optocouplers designed for digital signal transmission across isolated boundaries. It serves as a bridge between different voltage domains while maintaining signal fidelity. The series is widely used in industrial and telecommunications environments where noise immunity and galvanic isolation are essential for system stability.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The HCPL-4701#320 is pin-compatible with the HCPL-2730 series and the 6N138/6N139 family. When substituting, verify that the replacement device maintains the required 5000 Vrms isolation rating and 100 kb/s data rate. Ensure the new component's package dimensions match the existing footprint if space is constrained.