DAC7664YR Equivalent & Substitute Parts

Part Overview

The DAC7664YR is a 16-bit digital-to-analog converter manufactured by Texas Instruments, featuring four independent D/A converters in a 64-LQFP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The DAC7664YR provides voltage-buffered output with internal reference and parallel data interface, suitable for multi-channel analog signal generation in industrial and instrumentation systems.

Substiute Parts

DAC7664YR

Texas InstrumentsIn Stock: 2097DAC7664YR Datasheet

Current PartRFQ

DAC7664YT

Texas InstrumentsIn Stock: 899DAC7664YT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The DAC7664YT qualifies as a direct substitute for the DAC7664YR based on identical electrical and mechanical specifications. Substitution is valid when the following parameters match exactly:

• 16-bit resolution with 4 independent D/A converters
• Voltage-buffered output configuration
• Parallel data interface with internal reference
• ±5V analog supply and 5V digital supply requirements
• 15µs settling time performance
• ±3 LSB INL and ±2 LSB DNL linearity specifications
• R-2R architecture
• 64-LQFP (10x10) surface mount package
• Operating temperature range of -40°C to 85°C
• ROHS3 compliance and MSL 3 rating

The primary distinction between these parts is product status and packaging format. The DAC7664YR is obsolete with tube packaging, while the DAC7664YT is active with tape and reel packaging, making it the recommended selection for new designs and ongoing production.

Parameter Comparison

Engineering Selection Recommendations

The DAC7664YT is the appropriate selection for applications currently specified with DAC7664YR components. Both parts maintain identical electrical performance and mechanical compatibility, with no functional differences in circuit operation. The DAC7664YT offers the advantage of active product status, ensuring continued availability and manufacturing support from Texas Instruments. Both parts carry ROHS3 compliance and equivalent moisture sensitivity ratings, meeting environmental and regulatory requirements. For new designs and production continuity, the DAC7664YT in tape and reel packaging is the standard choice, while the DAC7664YR remains available only through legacy inventory channels.

Frequently Asked Questions (FAQ)

Q: Can DAC7664YT replace DAC7664YR in existing designs? A: Yes. The DAC7664YT is electrically and mechanically identical to the DAC7664YR. All electrical parameters, pin configurations, and performance specifications are equivalent. The only differences are product status and packaging format.

Q: What is the difference between tube and tape & reel packaging? A: Tube packaging (DAC7664YR) is used for lower-volume or legacy applications, while tape and reel packaging (DAC7664YT) is standard for automated assembly and higher-volume production. Both formats contain identical components with the same electrical specifications.

Q: Why is the DAC7664YR listed as obsolete? A: The DAC7664YR has been superseded by the DAC7664YT. Texas Instruments continues to support the DAC7664 family through the active DAC7664YT variant. Existing inventory of the DAC7664YR may be available through authorized distributors, but new production should transition to the DAC7664YT.

Q: Are there any performance differences between these parts? A: No. Both parts share identical 16-bit resolution, 4-channel configuration, 15µs settling time, ±3/±2 LSB linearity, and R-2R architecture. Operating temperature ranges, supply voltage requirements, and all functional specifications are equivalent.

Q: What are the MSL and RoHS compliance implications? A: Both parts carry MSL 3 (168 Hours) moisture sensitivity rating and ROHS3 compliance. Handling and storage procedures are identical for both variants.