MAX981CPA+ Equivalent & Substitute Parts

Part Overview

The MAX981CPA+ is a linear comparator IC in 8-DIP packaging manufactured by Analog Devices Inc./Maxim Integrated. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX981CPA+ operates as a standard comparator suitable for voltage comparison applications requiring through-hole mounting.

Substiute Parts

MAX981CPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2050MAX981CPA+ Datasheet

Current PartRFQ

LTC1440CN8#PBF

Analog Devices Inc.In Stock: 943LTC1440CN8#PBF Datasheet

MFR RecommendedRFQ

LTC1440IN8#PBF

Analog Devices Inc.In Stock: 1006LTC1440IN8#PBF Datasheet

MFR RecommendedRFQ

MIC833YM5-TR

Microchip TechnologyIn Stock: 4582MIC833YM5-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX981CPA+ are selected based on the following criteria:

Primary Substitution Parameters:

• Functional category: Linear comparator
• Package compatibility: 8-DIP through-hole mounting
• Regulatory compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)
• Export classification: EAR99

The substitute parts listed maintain functional equivalence as comparators while accommodating variations in electrical specifications, operating temperature ranges, and output configurations. Substitution is valid when the target application's electrical requirements fall within the specified ranges of the substitute device.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole Applications (Direct Package Compatibility):

LTC1440CN8#PBF and LTC1440IN8#PBF maintain identical 8-DIP through-hole packaging to the MAX981CPA+. Both are active products from Analog Devices Inc. with ROHS3 compliance and MSL 1 rating. Selection between these two depends on operating temperature requirements: LTC1440CN8#PBF operates 0°C to 70°C, while LTC1440IN8#PBF extends to -40°C to 85°C.

For Surface-Mount Redesigns:

MIC833YM5-TR provides an alternative for applications permitting PCB redesign to surface-mount technology. This Microchip device operates across -40°C to 85°C in a compact SOT-23-5 package. Surface-mount substitution requires circuit board layout modification and is applicable only when design flexibility exists.

Compliance and Regulatory Considerations:

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and EAR99 export classification, ensuring regulatory continuity with the obsolete MAX981CPA+.

Frequently Asked Questions (FAQ)

Q: Can LTC1440CN8#PBF and LTC1440IN8#PBF be used interchangeably with MAX981CPA+?

A: Both LTC1440 variants maintain 8-DIP through-hole packaging compatible with MAX981CPA+ footprints. Electrical parameter differences exist; verify that your application's voltage supply range, input offset, propagation delay, and output current requirements fall within the LTC1440 specifications.

Q: What is the primary difference between LTC1440CN8#PBF and LTC1440IN8#PBF?

A: Operating temperature range differs. LTC1440CN8#PBF operates 0°C to 70°C (commercial grade), while LTC1440IN8#PBF operates -40°C to 85°C (industrial grade). Select based on your application's thermal environment.

Q: Is MIC833YM5-TR a direct replacement for MAX981CPA+?

A: MIC833YM5-TR is functionally equivalent as a comparator but requires PCB redesign due to different packaging (SOT-23-5 surface-mount versus 8-DIP through-hole). This substitution is applicable only when board layout modification is feasible.

Q: Do all substitute parts maintain the same regulatory compliance as MAX981CPA+?

A: Yes. All listed substitutes are ROHS3 compliant, MSL 1 rated, and EAR99 classified, matching the regulatory profile of the obsolete MAX981CPA+.

Q: What electrical parameters should I verify before selecting a substitute?

A: Confirm that your application requirements align with: supply voltage range, input offset voltage, output current capability, propagation delay, and operating temperature range of the selected substitute part.