MAX545AESD Equivalent & Substitute Parts

Part Overview

The MAX545AESD 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 device features an R-2R architecture with external reference capability and SPI interface compatibility. The MAX545AESD is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity. Substitute parts must maintain identical electrical specifications and package compatibility to ensure direct replacement capability.

Substiute Parts

MAX545AESD

Analog Devices Inc./Maxim IntegratedIn Stock: 1010MAX545AESD Datasheet

Current PartRFQ

MAX545BESD+

Analog Devices Inc./Maxim IntegratedIn Stock: 3205MAX545BESD+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX545AESD is determined by strict equivalence across the following critical parameters:

• Resolution & Architecture: 14-bit resolution with R-2R architecture
• Functional Interface: SPI data interface with external reference input
• Output Characteristics: Voltage-unbuffered output, single converter
• Electrical Performance: Settling time of 1µs (Typ), INL/DNL of ±0.15 LSB
• Power Supply Requirements: 5V analog and digital supply voltages
• Package Specification: 14-SOIC surface mount package (0.154" width, 3.90mm)
• Temperature Range: -40°C to 85°C operating specification

The MAX545BESD+ meets all these criteria and is classified as an active product, making it a direct parametric equivalent suitable for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The MAX545BESD+ is the primary substitute for the obsolete MAX545AESD. Both devices share identical electrical specifications, pin configuration, and package geometry, enabling direct replacement in existing designs. The MAX545BESD+ offers the additional advantage of active product status, ensuring continued availability and manufacturing support.

A significant distinction exists in regulatory compliance: the MAX545BESD+ is ROHS3 compliant, whereas the MAX545AESD is RoHS non-compliant. For applications subject to RoHS directives or environmental regulations, the MAX545BESD+ is the required selection. Both devices maintain REACH unaffected status and EAR99 export classification.

Selection between these parts should be based on product lifecycle requirements and regulatory compliance mandates for the target application.

Frequently Asked Questions (FAQ)

Q: Can the MAX545BESD+ directly replace the MAX545AESD in existing designs?

A: Yes. The MAX545BESD+ is a parametric equivalent with identical electrical specifications, pin configuration, and 14-SOIC package dimensions. No circuit modifications are required for direct substitution.

Q: What is the primary reason to substitute the MAX545AESD?

A: The MAX545AESD is classified as obsolete. The MAX545BESD+ is an active product with ongoing manufacturing support and availability.

Q: Are there differences in RoHS compliance between these parts?

A: Yes. The MAX545AESD is RoHS non-compliant, while the MAX545BESD+ is ROHS3 compliant. Applications requiring RoHS compliance must use the MAX545BESD+.

Q: Do both parts require the same supply voltages?

A: Yes. Both the MAX545AESD and MAX545BESD+ require 5V analog and 5V digital supply voltages with identical electrical performance specifications.

Q: Is the package footprint identical between these devices?

A: Yes. Both devices use the 14-SOIC package with 0.154" width and 3.90mm body width, ensuring PCB layout compatibility.

Q: What is the settling time specification for these DACs?

A: Both devices specify a typical settling time of 1µs, meeting identical performance requirements for data acquisition applications.