HCPL-4503-320E

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-4503-320E is a single-channel high-speed optocoupler manufactured by Broadcom Limited. It features a phototransistor output and operates with a data rate of 1 Mb/s. The device provides an isolation voltage of 3750 Vrms and supports a maximum forward current of 16 mA. It has a typical current transfer ratio of 25% and an output current capability of 8 mA. The component is housed in an 8-pin PDIP Gull Wing package for through-hole mounting. It functions within a temperature range of 0°C to +70°C and dissipates up to 100 mW.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-speed signal transmission at 1 Mb/s for digital applications
• Offers electrical isolation between input and output circuits
• Features TTL-compatible logic output structure
• Utilizes a phototransistor output stage

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial networking systems
• TTL-compatible digital interface circuits
• Isolation between diverse voltage level circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 320E to confirm tube packaging, as other suffixes like 520 indicate reel packaging. Confirm RoHS compliance status directly from the manufacturer datasheet, as distributor listings may vary. Check for end-of-life or limited availability notices, as this component series has faced discontinuation risks in some regions. Ensure the procurement source provides valid traceability documentation for quality assurance purposes.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single channel of high-speed isolation is required for TTL logic interfaces. The 1 Mb/s data rate suits moderate-speed digital communication needs. Consider the 3750 Vrms isolation rating for safety requirements. Verify that the through-hole PDIP package fits the PCB layout constraints. Compare against the HCNW series if surface-mount technology or higher isolation voltages are necessary for the design.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL series of high-speed optocouplers from Broadcom. It is designed to bridge circuits operating at different voltage levels while maintaining signal integrity. The series is commonly used in industrial automation and communication equipment where reliable galvanic isolation is critical for system protection and noise reduction.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The HCPL-4503-300E is a verified substitute offering identical electrical specifications but in a tube package instead of cut tape. Both parts share the same 1 Mb/s speed and phototransistor output characteristics. Designers should verify pin compatibility and thermal performance when switching between these packaging variants.