HCPL4503TM

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL4503TM is a single-channel high-speed transistor output optocoupler manufactured by Fairchild Semiconductor. It features an 8-pin DIP package with through-hole mounting. Key electrical parameters include a data rate of 1 Mbit/s, isolation voltage of 5000 Vrms, and current transfer ratio of 38%. The forward current is 16 mA with a typical forward voltage of 1.45 V. Output current is 8 mA, and power dissipation is 100 mW. Operating temperature ranges from -40°C to +100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High-speed operation up to 1 Mbit/s using separate photodiode bias and output-transistor collector connections
• Provides electrical insulation between input and output via an insulating layer
• Designed for CMOS-LSTTL-TTL compatibility

Transistor, Photovoltaic Output Optoisolators Applications

• Line receivers
• Pulse transformer replacement
• Output interface to CMOS-LSTTL-TTL
• Wide bandwidth analog coupling

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the manufacturer designation as Fairchild Semiconductor or its successor entity onsemi. Confirm the specific suffix 'TM' corresponds to the 8-pin DIP through-hole package variant. Check RoHS compliance status as legacy parts may vary. Ensure the operating temperature range matches the -40°C to +100°C specification required for your application environment.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation is required in a through-hole DIP package. It is suitable for applications needing 5000 Vrms isolation and 1 Mbit/s data rates. Consider the 38% current transfer ratio and 8 mA output current capability. Verify that the wide operating temperature range meets environmental requirements.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HCPL-4502/4503 series of single-channel high-speed optocouplers. These devices utilize a diode-transistor architecture to achieve speeds significantly faster than conventional phototransistor couplers. The series is available in various packages including DIP, SO-8, and Widebody configurations.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

HCPL4503SM (Surface Mount version)

Transistor, Photovoltaic Output Optoisolators FAQ

What is the maximum data rate supported by the HCPL4503TM?

The HCPL4503TM supports a data rate of 1 Mbit/s.

Does the HCPL4503TM have a base connection?

No, it is a transistor output optocoupler without a base connection, utilizing separate photodiode bias for speed enhancement.