HCPL-4701-560

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-4701-560 is a single-channel high-speed optocoupler manufactured by Broadcom Limited. It features an AlGaAs LED input and a photodarlington output with a base terminal for speed control. The device supports a data rate of 100 kb/s and offers a typical current transfer ratio (CTR) of 3500%, with a maximum CTR of 25000%. It operates with a forward voltage of 1.2 V and a maximum forward current of 10 mA. The isolation voltage is rated at 3750 Vrms, and the output can sink up to 60 mA. Power dissipation is limited to 115 mW, and it functions within a temperature range of -40°C to +85°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a photodarlington output with a dedicated base pin to optimize switching speed and reduce saturation time.
• Provides high current transfer efficiency using an AlGaAs LED source and integrated high-gain detector.
• Ensures electrical safety through certified high-voltage isolation between input and output circuits.

Transistor, Photovoltaic Output Optoisolators Applications

• Ground isolation for TTL, LSTTL, and CMOS logic families
• ISDN telephone interface circuits
• EIA RS-232C line receiver isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and insulation rating. Confirm RoHS compliance status as manufacturing processes evolve. Check for end-of-life notices or obsolescence warnings from Broadcom before finalizing design-in decisions.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when low input drive current is required for battery-powered systems. Choose based on the need for a base pin to manage storage time in high-speed digital isolation applications. Ensure the 3750 Vrms isolation meets the system's safety requirements.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL-4701 series of ultra-low power, high-gain optocouplers. It is designed to replace legacy devices like the 6N138/6N139 and HCPL-2730 while offering improved power efficiency. The series supports both through-hole and surface-mount packaging options for flexible PCB layout.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Pin-compatible alternatives include the HCPL-2730 and standard 6N138/6N139 devices. Verify that substitute parts meet the same 100 kb/s data rate and 3750 Vrms isolation specifications.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the function of the base pin on the photodarlington output?

The base pin allows for external connection to control the storage time of the photodarlington transistor, significantly improving switching speed compared to standard darlington configurations.

Does the HCPL-4701-560 support AC input signals?

Yes, the internal AlGaAs LED can be driven by AC or DC signals, provided the reverse voltage limits are not exceeded.