MAX942MSA/PR-T Equivalent & Substitute Parts

Part Overview

The MAX942MSA/PR-T is a single-element general-purpose CMOS/TTL comparator manufactured by Analog Devices Inc./Maxim Integrated in 8-SOIC surface-mount packaging. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The comparator operates across a wide supply voltage range (2.5V to 11V single supply, ±1.25V to 5.5V dual supply) with a maximum input offset voltage of 10mV at 5V and a propagation delay of 12µs. Finding suitable alternatives ensures design continuity and access to active, RoHS-compliant components.

Substiute Parts

MAX942MSA/PR-T

Analog Devices Inc./Maxim IntegratedIn Stock: 743MAX942MSA/PR-T Datasheet

Current PartRFQ

MAX942MSA/PR+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3845MAX942MSA/PR+T Datasheet

DirectRFQ

LMV7272TLX/NOPB

Texas InstrumentsIn Stock: 16762LMV7272TLX/NOPB Datasheet

MFR RecommendedRFQ

MCP6562-E/SN

Microchip TechnologyIn Stock: 3589MCP6562-E/SN Datasheet

MFR RecommendedRFQ

MCP6562T-E/MS

Microchip TechnologyIn Stock: 3051MCP6562T-E/MS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX942MSA/PR-T is determined by the following critical parameters:

• Package Compatibility: 8-SOIC form factor (0.154", 3.90mm width) for direct PCB footprint compatibility
• Supply Voltage Range: Minimum 2.5V single supply or ±1.25V dual supply capability
• Output Type: CMOS and TTL output compatibility
• Operating Temperature: -55°C to 125°C range
• Functional Type: General-purpose comparator with single or dual elements

The substitute parts are grouped into two categories:

Category 1 - Direct Package Match (8-SOIC): MAX942MSA/PR+T and MCP6562-E/SN maintain the identical 8-SOIC package, enabling direct PCB replacement without layout modifications.

Category 2 - Functional Equivalent with Package Variation: LMV7272TLX/NOPB (8-DSBGA) and MCP6562T-E/MS (8-MSOP) provide equivalent electrical performance but require PCB redesign due to different package footprints.

All substitute parts are active products with RoHS3 compliance, addressing the obsolescence and regulatory limitations of the original part.

Parameter Comparison

Engineering Selection Recommendations

For Direct PCB Replacement (No Layout Changes)

MAX942MSA/PR+T is the primary recommendation for designs requiring identical 8-SOIC footprint compatibility. This part maintains the same package dimensions while offering active product status and RoHS3 compliance. The dual-element configuration provides additional functionality without footprint penalty. Operating temperature range (-55°C to 125°C) matches the original specification.

MCP6562-E/SN provides an alternative 8-SOIC option with superior electrical performance characteristics, including lower input bias current (1pA vs. 0.4µA) and faster propagation delay (80ns vs. 200ns). RoHS3 compliance and active status support long-term supply chain stability.

For Designs Permitting Package Redesign

MCP6562T-E/MS offers the same electrical performance as MCP6562-E/SN in an 8-MSOP package, suitable for space-constrained applications. The smaller footprint (0.118", 3.00mm width) reduces PCB area while maintaining all functional equivalence.

LMV7272TLX/NOPB from Texas Instruments provides the highest performance specifications with 78dB CMRR/PSRR and 2.1µs propagation delay in an 8-DSBGA package. This option is suitable for applications where superior noise rejection and faster response are critical. Note: Operating temperature range is -40°C to 85°C, which is narrower than the original part.

All substitute parts carry RoHS3 compliance and active product status, ensuring regulatory compliance and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can MAX942MSA/PR+T directly replace MAX942MSA/PR-T on existing PCBs?

A: Yes. MAX942MSA/PR+T maintains the identical 8-SOIC package footprint (0.154", 3.90mm width) and surface-mount configuration. No PCB layout modifications are required. The part is pin-compatible and functionally equivalent for applications using single comparator elements.

Q: What is the key difference between MAX942MSA/PR+T and the original MAX942MSA/PR-T?

A: MAX942MSA/PR+T contains two comparator elements versus one in the original part. Both share the same 8-SOIC package. The substitute part is active and RoHS3-compliant, addressing the obsolescence and regulatory status of the original.

Q: Are MCP6562-E/SN and MCP6562T-E/MS electrically identical?

A: Yes. Both parts are electrically identical with identical electrical specifications. The difference is packaging: MCP6562-E/SN uses 8-SOIC (0.154", 3.90mm width) while MCP6562T-E/MS uses 8-MSOP (0.118", 3.00mm width). Select based on PCB space requirements and existing footprint compatibility.

Q: Why does LMV7272TLX/NOPB have a narrower operating temperature range?

A: LMV7272TLX/NOPB operates from -40°C to 85°C, compared to -55°C to 125°C for the original part. This is a design characteristic of the Texas Instruments device. For applications requiring the full -55°C to 125°C range, select MAX942MSA/PR+T, MCP6562-E/SN, or MCP6562T-E/MS.

Q: Which substitute part offers the fastest propagation delay?

A: MCP6562-E/SN and MCP6562T-E/MS both offer 80ns maximum propagation delay, significantly faster than the original part's 12µs. LMV7272TLX/NOPB provides 2.1µs. For timing-critical applications, Microchip MCP6562 variants are preferred.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All four substitute parts (MAX942MSA/PR+T, MCP6562-E/SN, MCP6562T-E/MS, and LMV7272TLX/NOPB) are RoHS3 compliant. The original MAX942MSA/PR-T is RoHS non-compliant, making substitution necessary for RoHS-regulated applications.

Q: Can I use LMV7272TLX/NOPB in a design originally specified for MAX942MSA/PR-T?

A: LMV7272TLX/NOPB is functionally equivalent but requires PCB redesign due to the 8-DSBGA package versus 8-SOIC. The narrower operating temperature range (-40°C to 85°C) must be verified against application requirements. Superior electrical performance (78dB CMRR/PSRR, 2.1µs propagation delay) makes it suitable for new designs with compatible temperature specifications.

Q: What is the inventory status of these substitute parts?

A: MAX942MSA/PR+T has 3,759 units in stock. MCP6562-E/SN has 3,528 units. MCP6562T-E/MS has 2,953 units. LMV7272TLX/NOPB has 16,718 units. All parts are available as new original stock from active manufacturers.