ISD91331RI

Overview

The ISD91331RI is a voice record and playback integrated circuit manufactured by Nuvoton Technology Corporation. It belongs to the ISD91331 base product family. The component is currently in an obsolete part status, indicating it is no longer actively produced or recommended for new designs. It complies with ROHS3 standards, ensuring environmental safety regulations are met. The device features a moisture sensitivity level of 3, which corresponds to a limit of 168 hours for floor life after opening the package. This specification requires careful handling during storage and assembly processes to prevent damage from ambient humidity.

Feature Summary

• Integrated voice recording and playback functionality within a single chip solution
• Compliance with ROHS3 environmental standards for restricted substances
• Defined moisture sensitivity classification for manufacturing handling protocols

Applications

• Voice message modules requiring embedded recording capabilities
• Electronic greeting cards and novelty items with audio feedback
• Industrial control panels needing audible status alerts

Procurement Notes

Verify current availability through authorized distributors as this component is listed as obsolete. Confirm that existing stock meets the specified ROHS3 compliance requirements. Ensure proper handling procedures are followed due to the Moisture Sensitivity Level 3 rating. Check for valid replacement alternatives if long-term supply stability is required for production lines. Validate datasheet versions against specific batch requirements.

Selection Notes

Consider the obsolete status when selecting this component for new projects. Evaluate alternative devices from the same manufacturer that offer active support. Assess whether the specific voice recording capacity meets application needs without modification. Review the interface requirements to ensure compatibility with the target system architecture. Compare performance metrics against newer generations of voice ICs for improved efficiency.

Part Context

This component is part of Nuvoton's broader portfolio of microcontroller and analog solutions. The company specializes in providing high-performance semiconductor products for industrial, automotive, and consumer markets. The ISD91331 series represents earlier iterations of voice recording technology developed by Nuvoton. These chips were designed to offer cost-effective audio solutions before being superseded by more advanced models.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Nuvoton catalogs for updated voice recording ICs. Verify cross-reference data with authorized distributors for compatible alternatives.