FOD073LR1

Overview

The FOD073LR1 is a high-speed optocoupler featuring a GaAlAs LED coupled to a high-speed integrated logic gate output. It operates with a propagation delay of typically 50 ns and offers a common-mode transient immunity of 25 kV/µs minimum. The device supports a data rate up to 10 Mbps and functions within an operating temperature range of -40°C to +100°C. It utilizes a SOIC-8 package and provides electrical isolation rated at 5000 Vrms.

Feature Summary

• High common-mode transient immunity for noise rejection in noisy environments
• Integrated logic gate output simplifies circuit design by eliminating external components
• High-speed operation suitable for digital communication interfaces
• Wide operating temperature range for industrial applications

Applications

• Industrial automation control systems
• Power supply feedback loops
• Digital ground isolation in communication networks
• Microprocessor system interface circuits

Procurement Notes

Verify the specific suffix LR1 indicates tape and reel packaging when ordering. Confirm the voltage rating and isolation specifications match the target application requirements. Check for RoHS compliance status if environmental regulations apply. Ensure the SOIC-8 footprint matches the PCB layout design before finalizing procurement.

Selection Notes

Select this component when high-speed digital isolation is required with minimal external circuitry. The integrated logic output reduces board space and component count compared to discrete transistor outputs. Consider the 25 kV/µs CMTI rating for environments with rapid voltage changes. Verify input current requirements align with the driving source capabilities.

Part Context

This part belongs to onsemi's FOD073 family of high-speed optocouplers. The family includes variants with different output configurations such as inverters and buffers. The LR1 suffix specifically denotes the reel packaging format. These devices are designed for robust performance in demanding industrial and commercial applications requiring reliable signal transmission across isolation barriers.

Replacement Considerations

Direct replacements include other FOD073 variants like FOD073 or FOD073A depending on the required output logic function. Verify pin compatibility and isolation ratings when substituting. Ensure the replacement part meets the same speed and CMTI specifications for equivalent performance.