HCPL-5431

Logic Output Optoisolators Overview

The HCPL-5431 is a high-reliability, Class H, dual-channel hermetically sealed optocoupler manufactured by Broadcom Limited. It features logic outputs with push-pull totem pole drivers and operates at data rates up to 40 Mbps. The device provides an isolation voltage of 1500 VDC and a common mode transient immunity (CMTI) of 500 V/µs. Packaged in an 8-pin ceramic DIP with gold-plated leads, it supports a forward current of 10 mA, output current of 25 mA, and power dissipation of 200 mW. Operating temperatures range from -55°C to 125°C.

Logic Output Optoisolators Feature Summary

• Hermetically sealed construction for high reliability and environmental protection
• Dual-channel design with push-pull logic outputs for fast signal transmission
• High common mode transient immunity ensuring stable operation in noisy environments
• Space-qualified classification suitable for demanding aerospace applications

Logic Output Optoisolators Applications

• Aerospace and satellite communication systems
• Military-grade electronic control circuits
• High-speed digital isolation interfaces
• Harsh environment industrial automation controllers

Logic Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., #100) against official datasheets to confirm lead frame material and termination type. Ensure procurement channels are authorized to guarantee authenticity for space-qualified components. Check RoHS compliance status as military variants may differ from commercial standards. Confirm package integrity upon receipt due to hermetic sealing requirements.

Logic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation is required alongside extreme reliability. The dual-channel configuration reduces board space compared to single units. Verify that the 1500 VDC isolation rating meets system safety standards. Consider the ceramic DIP package for thermal stability in wide temperature ranges. Ensure input current limits align with driving circuit capabilities.

Logic Output Optoisolators Part Context

This part belongs to Broadcom's high-speed optocoupler family designed for critical applications. It complements other hermetically sealed devices like the HCPL-5430 series. The product line emphasizes radiation hardness and long-term stability. It serves as a bridge between low-voltage logic and high-voltage isolated domains in defense and space sectors.

Logic Output Optoisolators Replacement Considerations

Direct substitutes include HCPL-5430 for similar performance in non-hermetic packages. Verify pin compatibility and electrical parameters before swapping. Cross-reference with Avago legacy documentation for equivalent specifications. Ensure replacement parts meet the same Class H reliability standards if used in aerospace contexts.