MAX544AESA Equivalent & Substitute Parts

Part Overview

The MAX544AESA is a 14-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring voltage output conversion. This component features an R-2R architecture with 1µs typical settling time and operates from dual 5V supply rails. The MAX544AESA is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

MAX544AESA

Analog Devices Inc./Maxim IntegratedIn Stock: 970MAX544AESA Datasheet

Current PartRFQ

MAX544BESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 3382MAX544BESA+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX544AESA is determined by strict equivalence across the following critical parameters:

• Resolution & Converter Count: 14-bit resolution with single D/A converter
• Output Characteristics: Voltage output, unbuffered configuration
• Interface & Timing: SPI data interface with 1µs settling time
• Supply Requirements: Dual 5V analog and digital supplies
• Accuracy Specifications: INL/DNL of ±0.15 LSB maximum
• Package & Form Factor: 8-SOIC surface mount package with identical pinout
• Temperature Range: -40°C to 85°C operating window

The MAX544BESA+ meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The MAX544BESA+ is the direct parametric equivalent for the obsolete MAX544AESA. Both components share identical electrical specifications, pinout, and package geometry, enabling direct substitution in existing designs.

The MAX544BESA+ offers the additional advantage of active product status, ensuring continued availability and manufacturing support. The component is ROHS3 compliant, meeting current environmental and regulatory requirements, whereas the MAX544AESA is non-compliant with modern RoHS standards.

For new designs or system refreshes, the MAX544BESA+ is the appropriate selection. For legacy system maintenance where the original MAX544AESA is no longer available, the MAX544BESA+ provides full functional and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MAX544BESA+ directly replace the MAX544AESA in existing PCB assemblies?

A: Yes. Both components are housed in identical 8-SOIC packages with matching pinouts. No PCB modifications are required for substitution.

Q: Are there electrical performance differences between these parts?

A: No. Both components share identical specifications for resolution, settling time, accuracy (INL/DNL), supply voltages, and operating temperature range.

Q: What is the primary reason to substitute the MAX544AESA?

A: The MAX544AESA is classified as obsolete. The MAX544BESA+ is an active product with guaranteed availability and manufacturing support.

Q: Does the MAX544BESA+ meet current environmental compliance standards?

A: Yes. The MAX544BESA+ is ROHS3 compliant. The original MAX544AESA is RoHS non-compliant.

Q: Are there packaging differences between these parts?

A: Both components are supplied in 8-SOIC surface mount packages. The MAX544BESA+ is available in tube packaging, while the MAX544AESA packaging specification was not provided.

Q: What is the data interface compatibility?

A: Both components use SPI serial interface. No firmware or software modifications are required when substituting between these parts.