MAX9140EXK-T Equivalent & Substitute Parts

Part Overview

The MAX9140EXK-T is a general-purpose CMOS comparator manufactured by Analog Devices Inc./Maxim Integrated in SC-70-5 surface mount packaging. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The comparator features push-pull TTL output, single supply operation from 2.7V to 5.5V, and is suitable for general-purpose signal comparison applications requiring low propagation delay and minimal input offset voltage.

Substiute Parts

MAX9140EXK-T

Analog Devices Inc./Maxim IntegratedIn Stock: 2744MAX9140EXK-T Datasheet

Current PartRFQ

MAX9140EXK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1425MAX9140EXK+T Datasheet

Parametric EquivalentRFQ

LMV7271MF/NOPB

Texas InstrumentsIn Stock: 19771LMV7271MF/NOPB Datasheet

MFR RecommendedRFQ

LMV7271MG/NOPB

Texas InstrumentsIn Stock: 4942LMV7271MG/NOPB Datasheet

MFR RecommendedRFQ

MCP6561T-E/LT

Microchip TechnologyIn Stock: 6396MCP6561T-E/LT Datasheet

MFR RecommendedRFQ

MCP6561T-E/OT

Microchip TechnologyIn Stock: 18053MCP6561T-E/OT Datasheet

MFR RecommendedRFQ

TS3011ICT

STMicroelectronicsIn Stock: 16138TS3011ICT Datasheet

MFR RecommendedRFQ

TS3021ICT

STMicroelectronicsIn Stock: 6508TS3021ICT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX9140EXK-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, Push-Pull, or TTL compatibility
• Package must be SC-70-5 (5-TSSOP, SOT-353) or compatible pinout
• Operating temperature range must support -40°C ~ 85°C minimum

Substitute Categories:

1. Parametric Equivalent (Direct Replacement): MAX9140EXK+T — Identical electrical specifications and packaging, differs only in product status (Active vs. Obsolete) and packaging format (Cut Tape & Digi-Reel vs. standard).

2. Functional Equivalents (SC-70-5 Package): TS3011ICT, TS3021ICT, LMV7271MG/NOPB, MCP6561T-E/LT — All feature SC-70-5 packaging with compatible supply voltage ranges and push-pull output configurations. These parts maintain pinout compatibility while offering active product status.

3. Functional Equivalents (Alternative Package): LMV7271MF/NOPB, MCP6561T-E/OT — Functionally equivalent but supplied in SOT-23-5 packaging. Require PCB layout modification but offer superior availability and active manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Design Changes): Select MAX9140EXK+T when available. This part maintains identical electrical performance and SC-70-5 packaging while offering active product status and improved supply chain availability. All RoHS3 compliance and regulatory certifications remain unchanged.

For SC-70-5 Package Retention: TS3021ICT and MCP6561T-E/LT are suitable alternatives maintaining the original package footprint. TS3021ICT offers lower quiescent current (90µA vs. 300µA) and extended operating temperature range (-40°C ~ 125°C). MCP6561T-E/LT provides faster propagation delay (80ns vs. 40ns) and higher output current capability (50mA typical). Both are ROHS3 compliant and actively manufactured.

LMV7271MG/NOPB maintains SC-70-5 packaging with significantly reduced quiescent current (14µA) but exhibits slower propagation delay (2.1µs) and higher input offset voltage (4mV). This part is suitable for low-power applications where speed is not critical.

For Alternative Packaging (Design Flexibility): LMV7271MF/NOPB and MCP6561T-E/OT offer SOT-23-5 packaging with superior component availability and lower cost. Both require PCB layout modification but maintain functional equivalence. MCP6561T-E/OT provides faster response (80ns) compared to LMV7271MF/NOPB (2.1µs).

Compliance Considerations: All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status. ECCN and HTSUS classifications remain consistent across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can MAX9140EXK+T be used as a direct replacement for MAX9140EXK-T? A: Yes. MAX9140EXK+T is electrically and functionally identical, differing only in product status (Active vs. Obsolete) and packaging format (Cut Tape & Digi-Reel). No design changes are required.

Q: What is the primary difference between SC-70-5 and SOT-23-5 packages? A: SC-70-5 (5-TSSOP) and SOT-23-5 (SC-74A) are physically different packages with different PCB footprints. SOT-23-5 is larger and more widely available. Substitution between these packages requires PCB layout modification but maintains electrical compatibility.

Q: Which substitute offers the lowest power consumption? A: LMV7271MG/NOPB and LMV7271MF/NOPB both feature 14µA maximum quiescent current, significantly lower than the MAX9140EXK-T (300µA). These parts are suitable for battery-powered or low-power applications.

Q: Are there supply voltage compatibility concerns with substitute parts? A: Most substitutes support 1.8V ~ 5.5V supply range, which encompasses the original 2.7V ~ 5.5V specification. TS3011ICT has a narrower range (2.2V ~ 5V). Verify your specific supply voltage requirements before selection.

Q: What is the impact of propagation delay differences? A: The MAX9140EXK-T specifies 40ns maximum propagation delay. MCP6561T-E/LT and MCP6561T-E/OT match this specification (80ns). LMV7271 variants are significantly slower (2.1µs). For timing-critical applications, select MCP6561 or verify that slower response is acceptable.

Q: Do all substitutes maintain the same hysteresis specification? A: No. The MAX9140EXK-T features 1.5mV hysteresis. Substitutes vary: MCP6561 series (5mV), TS3011ICT (2mV), TS3021ICT (unspecified), LMV7271 (unspecified). Verify hysteresis requirements for your application.

Q: Are all parts RoHS3 compliant? A: Yes. All listed parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory compliance across all alternatives.