MAX972CSA-T Equivalent & Substitute Parts

Part Overview

The MAX972CSA-T is a dual-channel general-purpose comparator with integrated voltage reference and open-drain output configuration, housed in an 8-SOIC surface-mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The MAX972CSA-T operates across a wide supply voltage range (2.5V to 11V single supply, ±1.25V to ±5.5V dual supply) and is suitable for precision voltage comparison applications requiring low quiescent current and integrated reference functionality.

Substiute Parts

MAX972CSA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 3658MAX972CSA-T Datasheet

Current PartRFQ

MAX972CSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3298MAX972CSA+T Datasheet

DirectRFQ

LTC1441CS8#TRPBF

Analog Devices Inc.In Stock: 890LTC1441CS8#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX972CSA-T is determined by the following critical parameters:

Primary Substitution Criteria:

• Dual-channel comparator architecture (2 elements)
• 8-SOIC surface-mount package with identical 0.154" (3.90mm) width
• Supply voltage range compatibility: minimum 2.5V single supply or ±1.25V dual supply capability
• Input offset voltage specification of 10mV @ 5V or better
• CMRR and PSRR performance of 80dB or greater
• Operating temperature range 0°C to 70°C
• RoHS3 compliance and MSL 1 rating

Secondary Considerations:

• Output type (open-drain vs. CMOS/TTL) affects circuit design but does not preclude substitution if pull-up resistor configuration is adjusted
• Quiescent current specifications must not exceed application power budget constraints
• Product status (active vs. obsolete) indicates long-term availability

Parameter Comparison

Engineering Selection Recommendations

MAX972CSA+T (Direct Substitute - Recommended Primary Choice)

The MAX972CSA+T is the direct functional equivalent of the MAX972CSA-T with identical electrical specifications and package configuration. The primary distinction is product status: MAX972CSA+T is active, ensuring long-term availability and supply chain continuity. This part maintains open-drain output architecture, identical supply voltage ranges, and matching performance metrics. Packaging format is tape & reel (TR), suitable for automated assembly processes. Selection of MAX972CSA+T eliminates obsolescence risk while preserving design compatibility without circuit modification.

LTC1441CS8#TRPBF (Alternative Substitute - Conditional Selection)

The LTC1441CS8#TRPBF meets all primary substitution criteria with the following distinctions: output type is CMOS/TTL rather than open-drain, quiescent current is 5.7µA versus 4µA, and propagation delay is specified at 15µs. The supply voltage range is slightly lower on the single-supply minimum (2V versus 2.5V) and dual-supply minimum (±1V versus ±1.25V). This part is suitable for applications where CMOS/TTL output compatibility is acceptable and where the marginal increase in quiescent current does not violate power budget constraints. Circuit design modification is required to accommodate output type differences.

Both substitute parts maintain RoHS3 compliance, MSL 1 rating, and identical package geometry, ensuring mechanical and environmental compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can MAX972CSA+T be used as a direct drop-in replacement for MAX972CSA-T?

A: Yes. MAX972CSA+T is electrically and mechanically identical to MAX972CSA-T. Both devices feature open-drain output, identical supply voltage ranges, matching input offset voltage specifications, and the same 8-SOIC package footprint. No circuit modification is required. The primary difference is product status: MAX972CSA+T is active, while MAX972CSA-T is obsolete.

Q: What are the key differences between MAX972CSA+T and LTC1441CS8#TRPBF?

A: The primary differences are output type and quiescent current. MAX972CSA+T features open-drain output with 4µA maximum quiescent current, while LTC1441CS8#TRPBF provides CMOS/TTL output with 5.7µA maximum quiescent current. Both maintain identical input offset voltage (10mV @ 5V), CMRR/PSRR performance (80dB), and operating temperature range (0°C to 70°C). LTC1441CS8#TRPBF also specifies 15µs propagation delay. Circuit design modification is necessary when substituting with LTC1441CS8#TRPBF to accommodate output type differences.

Q: Are all substitute parts available in the same package?

A: Yes. MAX972CSA-T, MAX972CSA+T, and LTC1441CS8#TRPBF are all housed in 8-SOIC packages with identical 0.154" (3.90mm) width. PCB footprint compatibility is maintained across all three parts, eliminating the need for layout redesign.

Q: Do substitute parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Environmental and regulatory compliance is maintained across the main part and both substitutes.

Q: Which substitute should be selected for new designs?

A: MAX972CSA+T is the recommended choice for new designs due to active product status, ensuring long-term supply availability and manufacturing support. This part provides identical functionality to the obsolete MAX972CSA-T without design modification. LTC1441CS8#TRPBF is suitable only when CMOS/TTL output compatibility is required and circuit design can accommodate output type differences.

Q: Can LTC1441CS8#TRPBF be used in applications requiring open-drain output?

A: LTC1441CS8#TRPBF provides CMOS/TTL output, not open-drain. Applications requiring open-drain output characteristics must use MAX972CSA+T or MAX972CSA-T. Substitution with LTC1441CS8#TRPBF requires circuit redesign to accommodate output type differences and may not be suitable for all applications.