HCPL4503TSR2VM

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL4503TSR2VM is a single-channel high-speed optocoupler manufactured by onsemi, formerly Fairchild Semiconductor. It features a phototransistor output with a dedicated base connection to minimize base-collector capacitance, enabling data rates up to 1 Mb/s. The device provides electrical isolation of 5000 Vrms and operates within a temperature range of -40°C to +100°C. Key electrical parameters include a forward current of 16 mA, an output current of 8 mA, and a power dissipation of 100 mW. It is housed in an 8-pin surface-mount DIP (MDIP-8) package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High-speed operation achieved through separate photodiode bias and output-transistor collector connections
• Enhanced electrical isolation capability for noise immunity in digital circuits
• CMOS logic compatibility for direct interface with microprocessors and logic gates

Transistor, Photovoltaic Output Optoisolators Applications

• Digital isolation in industrial communication networks
• Signal coupling between microprocessor systems and power stages
• Isolation in switching power supply feedback loops

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the manufacturer designation carefully, as this component was originally developed by Fairchild Semiconductor and is now produced by onsemi following their merger. Confirm that the suffix TSR2VM corresponds to the specific tape-and-reel packaging and lead-free RoHS compliance status required for your assembly process. Cross-reference the datasheet revision to ensure parameter consistency with your design specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high-speed signal transmission is required alongside robust galvanic isolation. The integrated photodiode bias terminal significantly reduces propagation delay compared to standard phototransistor optocouplers. Ensure the input drive circuit can supply the necessary forward current to achieve the specified data rate without exceeding the maximum power dissipation limits under worst-case thermal conditions.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL-4503 family of single-channel high-speed optocouplers. The family utilizes a diode-transistor architecture to optimize speed-performance trade-offs. Variants within the series differ primarily in packaging options, such as through-hole DIP or surface-mount configurations, and insulation voltage ratings, while maintaining similar functional characteristics for high-speed digital isolation applications.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include HCPL4503TSVM and HCPL4503TSR2VM from onsemi, which share identical pinouts and electrical specifications. Legacy equivalents from Broadcom/Avago, such as HCPL-4503#300, may require verification of insulation voltage differences and operating temperature ranges before implementation.