MAX941EUA-T Equivalent & Substitute Parts

Part Overview

The MAX941EUA-T is a single-channel comparator with integrated latch and shutdown functionality, manufactured by Analog Devices Inc./Maxim Integrated. This device operates as a CMOS, push-pull, TTL output comparator in an 8-uMAX/uSOP surface mount package. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

MAX941EUA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 946MAX941EUA-T Datasheet

Current PartRFQ

MAX941EUA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5222MAX941EUA+T Datasheet

Parametric EquivalentRFQ

LMV7271MFX/NOPB

Texas InstrumentsIn Stock: 17433LMV7271MFX/NOPB Datasheet

MFR RecommendedRFQ

LMV7291MG

Texas InstrumentsIn Stock: 17374LMV7291MG Datasheet

MFR RecommendedRFQ

MCP6561T-E/OT

Microchip TechnologyIn Stock: 18053MCP6561T-E/OT Datasheet

MFR RecommendedRFQ

TLV3701QDBVREP

Texas InstrumentsIn Stock: 952TLV3701QDBVREP Datasheet

MFR RecommendedRFQ

TLV3701QDBVRG4Q1

Texas InstrumentsIn Stock: 429395TLV3701QDBVRG4Q1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX941EUA-T is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Supply voltage range must encompass or match 2.7V ~ 5.5V
• Output type must include CMOS and push-pull capability
• Propagation delay must not exceed 80ns for timing-critical applications
• Input offset voltage and input bias current must remain within acceptable tolerances for the application

Mechanical & Packaging Compatibility:

• Package must be surface mount compatible
• Pin count and footprint must accommodate the 8-pin configuration or be pin-compatible

Compliance & Availability:

• Active product status is preferred for long-term supply assurance
• RoHS3 compliance is required for modern manufacturing standards

The substitute parts are grouped into two categories:

1. Parametric Equivalent (Direct Replacement): MAX941EUA+T - Identical electrical specifications with improved product status and RoHS compliance
2. Functional Equivalents (Alternative Architectures): LMV7271MFX/NOPB, LMV7291MG, MCP6561T-E/OT, TLV3701QDBVREP, TLV3701QDBVRG4Q1 - Meet core electrical requirements with different package options and enhanced features

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Recommended for Existing Designs):

MAX941EUA+T is the primary substitute for MAX941EUA-T. This part maintains identical electrical specifications and package compatibility while offering active product status and ROHS3 compliance. The transition from tape & reel to cut tape packaging does not affect electrical performance. This option is suitable for designs where the 8-pin TSSOP/MSOP footprint and 80ns propagation delay are critical requirements.

Alternative Selections (For New Designs or Specific Requirements):

MCP6561T-E/OT provides the closest electrical match to the original part with 80ns propagation delay, extended operating temperature range (-40°C to 125°C), and active product status. The SOT-23-5 package requires PCB layout modification but offers superior availability and RoHS3 compliance. This part includes 5mV hysteresis and supports TTL output configuration.

LMV7271MFX/NOPB and LMV7291MG are suitable for applications where lower quiescent current (14µA) and improved input bias current (0.01µA) are beneficial. These parts operate within the 2.7V ~ 5.5V supply range but feature slower propagation delays (2.1µs and 1.8µs respectively), making them unsuitable for timing-critical applications requiring 80ns response.

TLV3701QDBVREP and TLV3701QDBVRG4Q1 extend supply voltage capability to 16V and offer superior PSRR (105dB), but exhibit significantly longer propagation delay (240µs). These parts are appropriate for low-speed comparison applications with extended supply voltage requirements. The G4Q1 variant includes AEC-Q100 automotive qualification.

Compliance Considerations:

All substitute parts except MAX941EUA-T are ROHS3 compliant. For applications requiring RoHS non-compliant components, the original MAX941EUA-T remains the only option, though product status is obsolete.

Frequently Asked Questions (FAQ)

Q: Can MAX941EUA+T be used as a direct drop-in replacement for MAX941EUA-T?

A: Yes. MAX941EUA+T is electrically and mechanically identical to MAX941EUA-T. The only differences are product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Cut Tape). Both use the same 8-TSSOP/8-MSOP footprint and deliver identical performance specifications.

Q: Why do some substitute parts have different package types?

A: The MAX941EUA-T uses an 8-pin package, while most functional equivalents use 5-pin SOT-23 or SC-70 packages. This reflects different internal architectures and pin configurations. PCB layout modification is required when switching to alternative packages. Pin-to-pin compatibility cannot be assumed.

Q: Which substitute part is best for timing-critical applications?

A: MCP6561T-E/OT and MAX941EUA+T both maintain the 80ns maximum propagation delay specification. LMV7271MFX/NOPB, LMV7291MG, TLV3701QDBVREP, and TLV3701QDBVRG4Q1 exhibit significantly longer delays (1.8µs to 240µs) and are unsuitable for applications requiring fast response times.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. The original MAX941EUA-T is RoHS non-compliant. If RoHS compliance is mandatory, MAX941EUA+T or any of the functional equivalents are acceptable.

Q: What is the difference between LMV7271MFX/NOPB and LMV7291MG?

A: Both are Texas Instruments general-purpose comparators with identical electrical specifications. LMV7271MFX/NOPB uses SOT-23-5 packaging (5 pins), while LMV7291MG uses SC-70-5 packaging (5 pins). LMV7291MG has Last Time Buy status, indicating limited future availability. LMV7271MFX/NOPB is recommended for new designs.

Q: Can TLV3701QDBVRG4Q1 be used in automotive applications?

A: Yes. TLV3701QDBVRG4Q1 includes AEC-Q100 automotive qualification and is suitable for automotive-grade applications. The standard TLV3701QDBVREP variant lacks automotive qualification.

Q: What is the impact of different quiescent current specifications?

A: Quiescent current ranges from 1.2µA (TLV3701 series) to 700µA (MAX941 series). Lower quiescent current reduces power consumption in battery-powered or always-on applications. Selection depends on power budget requirements and acceptable standby current levels.

Q: Why does MCP6561T-E/OT have higher input offset voltage (10mV) compared to MAX941EUA-T (3mV)?

A: MCP6561T-E/OT is a general-purpose comparator optimized for different performance trade-offs, including lower input bias current (1pA vs. 0.15µA) and extended temperature range. The higher input offset voltage reflects this architectural difference. Application-specific accuracy requirements determine acceptability.