MAX9141ESA Equivalent & Substitute Parts

Part Overview

The MAX9141ESA is a single-channel comparator with integrated latch functionality, manufactured by Analog Devices Inc./Maxim Integrated. It operates as a CMOS, push-pull, TTL output device in an 8-SOIC surface mount package. The device is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. This reference provides direct equivalents and functional substitutes based on electrical and mechanical compatibility parameters.

Substiute Parts

MAX9141ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 3371MAX9141ESA Datasheet

Current PartRFQ

MAX9141ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1040MAX9141ESA+ Datasheet

DirectRFQ

LMV7271MFX/NOPB

Texas InstrumentsIn Stock: 17433LMV7271MFX/NOPB Datasheet

MFR RecommendedRFQ

LMV7271MG/NOPB

Texas InstrumentsIn Stock: 4942LMV7271MG/NOPB Datasheet

MFR RecommendedRFQ

MCP6561T-E/OT

Microchip TechnologyIn Stock: 18053MCP6561T-E/OT Datasheet

MFR RecommendedRFQ

TLV3701QDBVREP

Texas InstrumentsIn Stock: 952TLV3701QDBVREP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX9141ESA is determined by the following critical parameters:

Direct Equivalent (Same Package, Same Latch Function):

• MAX9141ESA+ (Analog Devices Inc./Maxim Integrated) — Identical electrical specifications and 8-SOIC package; differs only in packaging format (Tube vs. standard) and product status (Active vs. Obsolete)

Functional Substitutes (Different Package, Compatible Electrical Performance): Substitutes from Texas Instruments and Microchip Technology are classified as general-purpose comparators without integrated latch functionality. These parts maintain compatibility through:

• Supply voltage range overlap: 2.7V ~ 5.5V minimum requirement met
• Output type compatibility: CMOS, Push-Pull, Rail-to-Rail outputs
• Operating temperature range: -40°C ~ 85°C or extended
• Surface mount technology: SOT-23-5 or SC-70-5 packages
• RoHS3 compliance and MSL Level 1 rating

The following parts meet these criteria:

• LMV7271MFX/NOPB (Texas Instruments) — SOT-23-5 package
• LMV7271MG/NOPB (Texas Instruments) — SC-70-5 package
• MCP6561T-E/OT (Microchip Technology) — SOT-23-5 package
• TLV3701QDBVREP (Texas Instruments) — SOT-23-5 package

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Circuit Redesign Required): Select MAX9141ESA+ when available inventory of the obsolete MAX9141ESA is depleted. This part maintains identical electrical specifications, latch functionality, and 8-SOIC package footprint. The only difference is active product status and packaging format (Tube). No PCB layout or schematic modifications are necessary.

For Functional Substitution (Circuit Redesign May Be Required): When the direct equivalent is unavailable, select from the following based on application requirements:

• MCP6561T-E/OT — Recommended for applications requiring the fastest propagation delay (80ns) among functional substitutes and extended operating temperature range (-40°C ~ 125°C). SOT-23-5 package requires PCB layout modification. Note: Lacks integrated latch; external latch circuitry may be required depending on application.

• TLV3701QDBVREP — Recommended for applications requiring extended supply voltage range (2.7V ~ 16V) and superior PSRR performance (105dB). Propagation delay is significantly longer (240µs); suitable only for low-speed applications. SOT-23-5 package requires PCB layout modification.

• LMV7271MFX/NOPB or LMV7271MG/NOPB — Recommended for applications prioritizing low quiescent current (14µA) and low input bias current (0.01µA). Available in SOT-23-5 (MFX) or SC-70-5 (MG) packages. Propagation delay is longer (2.1µs); suitable for low-speed applications.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX9141ESA+ be used as a direct replacement for MAX9141ESA? A: Yes. MAX9141ESA+ is electrically and functionally identical to MAX9141ESA. Both feature the same 8-SOIC package, latch functionality, and electrical specifications. The primary difference is product status (Active vs. Obsolete) and packaging format (Tube vs. standard). No circuit modifications are required.

Q: Why do the functional substitutes have different propagation delays? A: Propagation delay is determined by the internal circuit design and process technology of each manufacturer. LMV7271 series parts (2.1µs) and TLV3701 (240µs) use different topologies optimized for different performance characteristics. MCP6561T-E/OT (80ns) offers faster response but with different input offset and hysteresis specifications.

Q: Do the functional substitutes include latch functionality? A: No. LMV7271, MCP6561T-E/OT, and TLV3701 are general-purpose comparators without integrated latch. If latch functionality is required, external latch circuitry must be added to the design, or MAX9141ESA+ must be selected.

Q: What package changes are required when using functional substitutes? A: The MAX9141ESA uses an 8-SOIC package. Functional substitutes use smaller packages: SOT-23-5 (5-pin) or SC-70-5 (5-pin). PCB layout and footprint modifications are required. Pin assignments differ; refer to individual datasheets for pinout details.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All parts listed—MAX9141ESA+, LMV7271MFX/NOPB, LMV7271MG/NOPB, MCP6561T-E/OT, and TLV3701QDBVREP—are ROHS3 compliant with MSL Level 1 rating.

Q: Which substitute offers the best input offset performance? A: MAX9141ESA and MAX9141ESA+ offer the lowest input offset (2mV @ 5V). Among functional substitutes, LMV7271 series parts match this with 4mV @ 5V. MCP6561T-E/OT has 10mV @ 5.5V, and TLV3701 has 5mV @ 5V.

Q: Can TLV3701QDBVREP operate at higher supply voltages than MAX9141ESA? A: Yes. TLV3701QDBVREP supports 2.7V ~ 16V single supply or ±1.35V ~ 8V dual supply, compared to MAX9141ESA's 2.7V ~ 5.5V. However, its propagation delay (240µs) is significantly longer, limiting use to low-speed applications.

Q: Which substitute has the lowest quiescent current? A: TLV3701QDBVREP has the lowest quiescent current at 1.2µA, followed by LMV7271 series at 14µA. MAX9141ESA and MAX9141ESA+ consume 320µA. MCP6561T-E/OT consumes 130µA.