MAX972ESA+ Equivalent & Substitute Parts Reference

Part Overview

The MAX972ESA+ is a dual-channel general-purpose comparator with integrated voltage reference and open-drain output configuration, manufactured by Analog Devices Inc./Maxim Integrated. This 8-SOIC surface-mount device operates across a wide supply voltage range (2.5V ~ 11V single supply, ±1.25V ~ 5.5V dual supply) and is designed for precision voltage comparison applications requiring low quiescent current and integrated reference functionality. The device maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and package compatibility can be maintained across the specified parameter set.

Substiute Parts

MAX972ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2241MAX972ESA+ Datasheet

Current PartRFQ

MAX972ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2241MAX972ESA+ Datasheet

DirectRFQ

LTC1441CS8#TRPBF

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX972ESA+ is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Package compatibility: 8-SOIC surface-mount form factor (0.154", 3.90mm width)
• Dual-channel comparator architecture with 2 elements
• Integrated voltage reference functionality
• Open-drain output configuration
• Supply voltage range: minimum 2.5V single supply or ±1.25V dual supply capability
• Input offset voltage specification: 10mV @ 5V maximum
• Common-mode and power-supply rejection: 80dB minimum
• Operating temperature range: -40°C to 85°C minimum
• RoHS3 compliance and MSL 1 rating

Identified Substitute: The LTC1441CS8#TRPBF meets the core electrical and mechanical substitution criteria, with the following considerations: packaging format differs (Tape & Reel vs. Tube), output type is CMOS/TTL rather than open-drain, and operating temperature range is narrower (0°C ~ 70°C vs. -40°C ~ 85°C). These differences define the scope of application compatibility.

Parameter Comparison

Engineering Selection Recommendations

MAX972ESA+ (Primary Part): Select this part when open-drain output configuration is required for direct interface with pull-up resistor networks or when extended operating temperature range (-40°C to 85°C) is mandatory. Tube packaging is suitable for lower-volume procurement or manual assembly workflows. Active product status ensures long-term availability and supply continuity.

LTC1441CS8#TRPBF (Substitute Part): This part is suitable as a substitute when CMOS/TTL output levels are compatible with downstream logic circuits and operating temperature requirements do not exceed 70°C. Tape & Reel packaging is optimized for high-volume automated assembly. The slightly higher quiescent current (5.7µA vs. 4µA) and specified propagation delay (15µs) must be evaluated against circuit timing and power budget constraints. Both parts maintain identical input offset voltage and rejection ratio specifications.

Compliance Considerations: Both parts are RoHS3 compliant with MSL 1 rating, supporting unrestricted moisture handling and long-term storage without bake-out requirements. REACH unaffected status applies to both devices.

Frequently Asked Questions (FAQ)

Q: Can LTC1441CS8#TRPBF directly replace MAX972ESA+ in all applications?

A: Direct replacement is limited by three factors: (1) output type differs (CMOS/TTL vs. open-drain), requiring circuit redesign if open-drain pull-up functionality is essential; (2) operating temperature range is narrower (0°C ~ 70°C vs. -40°C ~ 85°C), restricting use in extended-temperature applications; (3) packaging format differs (Tape & Reel vs. Tube), affecting procurement and assembly processes.

Q: Are the electrical performance specifications identical?

A: Input offset voltage (10mV @ 5V), CMRR (80dB), and PSRR (80dB) are identical. Quiescent current differs slightly (4µA vs. 5.7µA). The LTC1441CS8#TRPBF specifies a 15µs propagation delay; the MAX972ESA+ does not specify this parameter. Supply voltage ranges are nearly equivalent, with LTC1441CS8#TRPBF supporting 2V minimum single supply versus 2.5V for MAX972ESA+.

Q: What is the significance of the packaging format difference?

A: MAX972ESA+ is supplied in Tube packaging, suitable for manual handling and lower-volume orders. LTC1441CS8#TRPBF is supplied in Tape & Reel format, optimized for automated pick-and-place assembly and high-volume production. This affects procurement quantity minimums, storage requirements, and assembly line compatibility.

Q: Can both parts be used interchangeably in PCB designs?

A: Both parts use identical 8-SOIC package dimensions (0.154", 3.90mm width), allowing footprint compatibility on PCBs. However, circuit-level compatibility depends on whether the application requires open-drain output (MAX972ESA+ only) or can accept CMOS/TTL output levels (LTC1441CS8#TRPBF). Temperature range requirements must also be verified.

Q: What compliance certifications apply to both parts?

A: Both MAX972ESA+ and LTC1441CS8#TRPBF are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity) ratings. Both are classified under ECCN EAR99 and HTSUS 8542.39.0001.