DAC7643VFT Equivalent & Substitute Parts

Part Overview

The DAC7643VFT is a 16-bit digital-to-analog converter manufactured by Texas Instruments, designed for data acquisition applications requiring dual-channel voltage output conversion. This component features parallel data interface, external reference capability, and buffered voltage output in a 32-LQFP surface mount package.

The DAC7643VFT is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term production requirements for systems utilizing this component.

Substiute Parts

DAC7643VFT

Texas InstrumentsIn Stock: 1401DAC7643VFT Datasheet

Current PartRFQ

DAC7642VFT

Texas InstrumentsIn Stock: 1290DAC7642VFT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DAC7643VFT are identified based on strict parametric equivalence across the following critical specifications:

• Resolution: 16-bit conversion capability
• Channel Configuration: Dual D/A converters (2 channels)
• Output Configuration: Buffered voltage output
• Interface Protocol: Parallel data interface
• Reference Architecture: External reference input
• Supply Voltage Requirements: ±5V analog supply, 5V digital supply
• Performance Metrics: 10µs settling time, ±3 LSB INL, ±2 LSB DNL
• Package Specification: 32-LQFP (7x7) surface mount
• Temperature Range: -40°C to 85°C operation

Parts meeting all these parameters are classified as direct parametric equivalents and may be substituted without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

The DAC7642VFT is a direct parametric equivalent to the DAC7643VFT. Both components share identical electrical specifications, package configuration, and performance characteristics across all critical parameters.

The primary distinction is product status: the DAC7643VFT is obsolete, while the DAC7642VFT maintains active production status. Both components maintain equivalent compliance certifications, including ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and production continuity.

Selection of the DAC7642VFT as a substitute provides access to active inventory and ongoing manufacturing support while maintaining full electrical and mechanical compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the DAC7642VFT be used as a direct replacement for the DAC7643VFT?

A: Yes. The DAC7642VFT meets all parametric requirements for direct substitution. Both components feature identical 16-bit resolution, dual-channel configuration, buffered voltage output, parallel interface, external reference capability, supply voltage specifications, settling time, linearity performance, R-2R architecture, operating temperature range, and 32-LQFP package dimensions. No circuit modifications are required.

Q: What is the primary advantage of substituting the DAC7642VFT for the obsolete DAC7643VFT?

A: The DAC7642VFT maintains active production status with established supply chain availability, whereas the DAC7643VFT is obsolete. This substitution ensures reliable component procurement for ongoing production and future design iterations.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the DAC7643VFT and DAC7642VFT maintain identical compliance status: ROHS3 compliant, REACH unaffected, and equivalent moisture sensitivity levels. Regulatory requirements are satisfied by either component.

Q: Will PCB layout or footprint require modification when substituting the DAC7642VFT?

A: No. Both components utilize the identical 32-LQFP (7x7) surface mount package. PCB footprints, land patterns, and assembly processes remain unchanged.

Q: Are the electrical performance specifications identical between these parts?

A: Yes. Both components specify 10µs settling time, ±3 LSB INL, and ±2 LSB DNL performance metrics. Analog supply voltage (±5V), digital supply voltage (5V), and operating temperature range (-40°C to 85°C) are identical.