DAC7545LU Equivalent & Substitute Parts

Part Overview

The DAC7545LU is a 12-bit digital-to-analog converter manufactured by Texas Instruments, housed in a 20-SOIC surface mount package. This component features an R-2R architecture with unbuffered current output, external reference capability, and parallel data interface. The DAC7545LU is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. Substitute parts must maintain identical electrical performance and package compatibility to ensure direct board-level replacement without design modification.

Substiute Parts

DAC7545LU

Texas InstrumentsIn Stock: 3341DAC7545LU Datasheet

Current PartRFQ

MX7545AKEWP+

Analog Devices Inc./Maxim IntegratedIn Stock: 864MX7545AKEWP+ Datasheet

MFR RecommendedRFQ

MX7545AKEWP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3293MX7545AKEWP+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC7545LU is determined by strict equivalence across the following critical parameters:

• Resolution and Architecture: 12-bit resolution with R-2R architecture
• Output Configuration: Current-mode unbuffered output
• Data Interface: Parallel input interface
• Reference Input: External reference capability
• Supply Voltage Ranges: Analog and digital supply compatibility (5V ~ 15V)
• Linearity Specifications: INL/DNL matching (±0.5 LSB max, ±1 LSB max)
• Package Compatibility: 20-SOIC surface mount package with identical pinout
• Temperature Range: -40°C ~ 85°C operating specification
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The substitute parts MX7545AKEWP+ and MX7545AKEWP+T, manufactured by Analog Devices Inc./Maxim Integrated, meet all electrical and mechanical requirements for direct substitution. Both variants are active products with improved settling time performance and superior moisture sensitivity ratings.

Parameter Comparison

Engineering Selection Recommendations

Both MX7545AKEWP+ and MX7545AKEWP+T are qualified substitutes for the obsolete DAC7545LU. Selection between these two variants depends on procurement and assembly requirements:

MX7545AKEWP+ (Tube packaging) is suitable for applications requiring smaller order quantities or manual component handling. This variant maintains full electrical equivalence with improved settling time (1µs versus 2µs) and superior moisture sensitivity rating (MSL 1 versus MSL 3).

MX7545AKEWP+T (Tape & Reel packaging) is optimized for high-volume automated assembly operations. This variant provides identical electrical performance and moisture sensitivity characteristics as the tube-packaged version, with the advantage of continuous reel format for pick-and-place equipment integration.

Both substitute parts are active products with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory compliance. The improved settling time performance of the Maxim Integrated variants provides enhanced dynamic response characteristics compared to the original Texas Instruments design.

Frequently Asked Questions (FAQ)

Q: Can MX7545AKEWP+ and MX7545AKEWP+T be used interchangeably with DAC7545LU?

A: Yes. Both Maxim Integrated variants are direct electrical and mechanical equivalents. The only difference is packaging format: MX7545AKEWP+ uses tube packaging while MX7545AKEWP+T uses tape & reel format. Selection depends on assembly process requirements, not electrical performance.

Q: What is the primary advantage of substituting to MX7545AKEWP+ or MX7545AKEWP+T?

A: The DAC7545LU is obsolete, making future procurement uncertain. The Maxim Integrated substitutes are active products with guaranteed long-term availability. Additionally, both variants offer improved settling time (1µs versus 2µs) and superior moisture sensitivity ratings (MSL 1 versus MSL 3).

Q: Are there any pinout differences between DAC7545LU and the substitute parts?

A: No. All three parts use identical 20-SOIC package geometry and pinout. Direct board-level replacement is possible without PCB modification.

Q: Do the substitute parts require different supply voltage configurations?

A: No. Both MX7545AKEWP+ and MX7545AKEWP+T operate with identical analog and digital supply voltage ranges (5V ~ 15V) as the DAC7545LU. Existing power distribution designs require no modification.

Q: Which substitute part should be selected for new production designs?

A: MX7545AKEWP+T (tape & reel format) is recommended for new production due to compatibility with automated assembly equipment. For prototype or low-volume applications, MX7545AKEWP+ (tube format) provides equivalent performance with more flexible ordering quantities.

Q: Are compliance certifications identical across all three parts?

A: Yes. DAC7545LU, MX7545AKEWP+, and MX7545AKEWP+T all maintain ROHS3 compliance and REACH unaffected status. No regulatory documentation changes are required for substitution.