LMV761MFX Equivalent & Substitute Parts

Part Overview

The LMV761MFX is a general-purpose comparator IC manufactured by Texas Instruments in SOT-23-6 surface mount packaging. This device operates across a 2.7V to 5V supply range with push-pull output configuration, designed for low-power signal comparison applications. The main part number is currently in Last Time Buy status, making equivalent and substitute parts necessary for ongoing design support and procurement planning.

Substiute Parts

LMV761MFX

Texas InstrumentsIn Stock: 17323LMV761MFX Datasheet

Current PartRFQ

LMV761MF

Texas InstrumentsIn Stock: 3010LMV761MF Datasheet

Parametric EquivalentRFQ

LMV761MF/NOPB

Texas InstrumentsIn Stock: 1370LMV761MF/NOPB Datasheet

Parametric EquivalentRFQ

LMV761MFX/NOPB

Texas InstrumentsIn Stock: 16669LMV761MFX/NOPB Datasheet

Parametric EquivalentRFQ

BU7231G-TR

Rohm SemiconductorIn Stock: 54342BU7231G-TR Datasheet

MFR RecommendedRFQ

MAX40004ANS02+

Analog Devices Inc./Maxim IntegratedIn Stock: 980MAX40004ANS02+ Datasheet

MFR RecommendedRFQ

MAX40005ANS02+T

Analog Devices Inc./Maxim IntegratedIn Stock: 726MAX40005ANS02+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMV761MFX are classified into two categories based on substitution criteria:

Parametric Equivalents (Direct Substitutes): Parts that maintain identical electrical specifications and package form factor. These include LMV761MF, LMV761MF/NOPB, and LMV761MFX/NOPB. All three share the same SOT-23-6 package, identical supply voltage range (2.7V ~ 5V), input offset voltage (0.2mV @ 5V), input bias current (50pA @ 5V), quiescent current (700µA), CMRR/PSRR ratings (100dB/110dB), and propagation delay (225ns). The primary differences are packaging format (Cut Tape vs. Digi-Reel) and product status (Last Time Buy vs. Active).

Manufacturer-Recommended Alternatives: Parts that provide functional equivalence with modified electrical characteristics and different package formats. These include BU7231G-TR (Rohm Semiconductor, 5-SSOP package), MAX40004ANS02+ (Analog Devices/Maxim, 4-WLP package), and MAX40005ANS02+T (Analog Devices/Maxim with integrated voltage reference, 4-WLP package). These alternatives operate across broader supply ranges and offer different performance trade-offs in propagation delay, quiescent current, and input offset voltage.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring direct pin-compatible replacement with identical electrical performance, select LMV761MF/NOPB or LMV761MFX/NOPB. Both parts maintain Active product status and are available in standard packaging formats (Cut Tape and Digi-Reel). LMV761MFX/NOPB offers the highest current inventory at 16,600 units.

For designs tolerating package format changes, BU7231G-TR provides an Active alternative in 5-SSOP packaging with significantly reduced quiescent current (15µA vs. 700µA), suitable for power-constrained applications. This part operates across an extended supply range (1.8V ~ 5.5V, ±0.9V ~ 2.75V) but exhibits higher input offset voltage (11mV) and propagation delay (1.7µs).

For ultra-low-power applications requiring minimal board space, MAX40005ANS02+T integrates a voltage reference in 4-WLP packaging with quiescent current of 1.1µA and propagation delay of 9µs (typical). This part maintains the full -40°C to 125°C operating temperature range and includes 70dB PSRR specification.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and EAR99 export classification consistent with the main part.

Frequently Asked Questions (FAQ)

Q: Can LMV761MF/NOPB directly replace LMV761MFX in existing designs?

A: Yes. LMV761MF/NOPB is a parametric equivalent with identical electrical specifications (0.2mV input offset, 50pA input bias current, 225ns propagation delay) and SOT-23-6 package. The primary difference is product status (Active vs. Last Time Buy) and packaging format (Digi-Reel availability). Pin configuration and functional behavior are identical.

Q: What are the trade-offs when using BU7231G-TR as a substitute?

A: BU7231G-TR reduces quiescent current from 700µA to 15µA, beneficial for battery-powered applications. However, it introduces higher input offset voltage (11mV vs. 0.2mV), slower propagation delay (1.7µs vs. 225ns), and lower CMRR/PSRR ratings (80dB vs. 100dB/110dB). The 5-SSOP package differs from SOT-23-6, requiring PCB layout modifications. Operating temperature range is limited to -40°C to 85°C.

Q: Is MAX40005ANS02+T suitable for high-speed applications?

A: No. MAX40005ANS02+T exhibits 9µs typical propagation delay, approximately 40 times slower than LMV761MFX (225ns). This part is optimized for low-power operation (1.1µA quiescent current) and includes integrated voltage reference functionality. Applications requiring sub-microsecond response times should retain the LMV761 series.

Q: What packaging considerations apply to alternative parts?

A: LMV761MF, LMV761MF/NOPB, and LMV761MFX/NOPB maintain SOT-23-6 packaging, enabling direct PCB substitution. BU7231G-TR uses 5-SSOP (SC-74A) packaging with different pin assignments and footprint. MAX40004ANS02+ and MAX40005ANS02+T use 4-WLP (0.73x0.73) ball grid array packaging, requiring redesigned PCB layouts and assembly process changes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, consistent with the main LMV761MFX part.