HCPL4503SM

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL4503SM is a single-channel high-speed transistor output optocoupler manufactured by onsemi. It provides electrical isolation between input and output circuits using an infrared LED and a phototransistor detector. The device supports a data rate of 1 Mbit/s and features a typical forward voltage of 1.45V. Key electrical specifications include a maximum output voltage of 20V, a channel output current of 8mA, and an isolation voltage rating of 5000Vrms. It operates within a temperature range of -40°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High-speed signal transmission capability supporting up to 1 Mbit/s data rates
• Robust electrical isolation with a 5000Vrms rating for noise immunity
• TTL-compatible input interface for direct logic connection
• Wide operating temperature range suitable for industrial environments

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial automation control systems
• Power supply feedback loops
• Signal isolation in communication interfaces

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'SM' indicates the tape and reel packaging format when ordering. Confirm the manufacturer origin, as this component was originally developed by Fairchild Semiconductor before being acquired by onsemi. Ensure the datasheet version matches the production batch requirements for compliance and performance validation.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation is required between microcontrollers and power stages. The 1 Mbit/s speed makes it suitable for applications where faster response times are necessary compared to standard optocouplers. Consider the 20V output voltage limit and 8mA drive capability to ensure compatibility with downstream circuit loads.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL-4503 series of high-speed transistor output optocouplers. The series is designed for applications requiring fast switching speeds and reliable galvanic isolation. The 'SM' suffix typically denotes a specific packaging variant, such as surface mount or reel packaging, distinguishing it from through-hole DIP versions.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for pin-compatible alternatives like the HCPL-4503 in different package styles if footprint changes are acceptable. Verify that substitute parts meet the same 1 Mbit/s speed and 5000Vrms isolation requirements. Cross-reference with onsemi's official replacement guide for validated equivalents.