DAC7654YT Equivalent & Substitute Parts

Part Overview

The DAC7654YT is a 16-bit digital-to-analog converter manufactured by Texas Instruments, designed for data acquisition applications requiring four independent voltage output channels. This component features an R-2R architecture with SPI data interface and internal voltage reference, operating across the industrial temperature range of -40°C to 85°C in a 64-LQFP surface mount package.

The DAC7654YT is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

DAC7654YT

Texas InstrumentsIn Stock: 680DAC7654YT Datasheet

Current PartRFQ

DAC7654YCT

Texas InstrumentsIn Stock: 1332DAC7654YCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DAC7654YT is determined by strict equivalence across the following critical parameters:

• Resolution: 16 bits
• Channel Count: 4 independent D/A converters
• Output Configuration: Voltage output with buffering
• Interface Protocol: SPI serial communication
• Reference Architecture: Internal voltage reference
• Supply Voltages: ±5V analog, 5V digital
• Settling Time: 15µs maximum
• Converter Architecture: R-2R topology
• Temperature Range: -40°C to 85°C
• Package: 64-LQFP (10x10) surface mount
• Regulatory Compliance: ROHS3 compliant

The DAC7654YCT qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The DAC7654YCT is the direct substitute for the obsolete DAC7654YT. Both components are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The DAC7654YCT carries active product status, ensuring ongoing manufacturer support and supply chain availability.

Both parts maintain ROHS3 compliance and equivalent moisture sensitivity ratings, supporting deployment in regulated and industrial environments. The DAC7654YCT is available in Tape & Reel packaging format, which is standard for production volume applications, whereas the DAC7654YT was supplied in tube packaging.

Selection of the DAC7654YCT eliminates obsolescence risk while preserving complete functional and physical compatibility with existing designs utilizing the DAC7654YT.

Frequently Asked Questions (FAQ)

Q: Can the DAC7654YCT directly replace the DAC7654YT without circuit modifications?

A: Yes. The DAC7654YCT is electrically and mechanically identical to the DAC7654YT. No circuit modifications, firmware changes, or PCB layout adjustments are required. Pin configuration, signal timing, and supply voltage requirements are identical.

Q: What is the primary difference between these two parts?

A: The DAC7654YT is classified as obsolete, while the DAC7654YCT maintains active product status. The packaging format differs: DAC7654YT is supplied in tube packaging, while DAC7654YCT is supplied in Tape & Reel format. Electrical specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance, identical MSL ratings of 3 (168 Hours), and equivalent regulatory status under REACH and ECCN classifications.

Q: What does the "YCT" suffix indicate compared to "YT"?

A: The suffix designates the packaging format. "YCT" indicates Tape & Reel packaging, standard for automated assembly and production environments. "YT" indicates tube packaging, typically used for lower-volume or manual assembly applications.

Q: Is the DAC7654YCT suitable for new designs?

A: Yes. The DAC7654YCT is the recommended component for new designs requiring a 16-bit, 4-channel voltage output DAC with SPI interface and internal reference. Its active product status ensures long-term availability and manufacturer support.