HCPL-4534

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-4534 is a dual-channel high-speed optocoupler featuring integrated photodetectors with separate bias connections. It offers a data rate of 1 Mb/s and an isolation voltage of 3750 Vrms. The device utilizes a phototransistor output type with a current transfer ratio of 24%. It supports a maximum forward current of 25 mA and an output current of 8 mA. Operating temperatures range from -55°C to +100°C, housed in a PDIP-8 package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides up to 100 times speed increase over conventional phototransistor couplers by reducing base-collector capacitance through separate photodiode bias connections.
• Features high common-mode transient immunity of 15 kV/µs minimum at VCM = 1500 V for robust noise rejection.
• TTL compatible design suitable for digital logic interface applications.

Transistor, Photovoltaic Output Optoisolators Applications

• High-speed digital signal isolation
• Industrial communication interfaces
• Noise-immune circuit isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., 520E) against official datasheets to confirm lead-free status and packaging configuration. Ensure the selected variant matches the required insulation voltage and operating temperature range for the target application environment.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high-speed data transmission exceeding standard optocoupler limits is required. The separate bias connection architecture makes it suitable for applications demanding fast switching speeds and high common-mode transient immunity compared to traditional designs.

Transistor, Photovoltaic Output Optoisolators Part Context

Part of the Broadcom HCPL-4534/0534 family of dual-channel high-speed optocouplers. These devices integrate light-emitting diodes and photo-detectors with electrical insulation between input and output channels.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

HCPL-0534 is a documented alternative within the same family offering similar high-speed performance characteristics.

Transistor, Photovoltaic Output Optoisolators FAQ

How does the HCPL-4534 achieve higher speed than conventional optocouplers?

It uses separate connections for the photodiode bias and output transistor collectors, which reduces base-collector capacitance significantly.

What is the common-mode transient immunity rating?

The device provides a minimum common-mode transient immunity of 15 kV/µs at VCM = 1500 V.