LMV331M7 Equivalent & Substitute Parts

Part Overview

The LMV331M7 is a general-purpose comparator IC manufactured by Texas Instruments, packaged in SC-70-5 (5-TSSOP) surface mount configuration. This device features CMOS, open-collector, and TTL output types with a single comparator element. The LMV331M7 operates across a 2.7V to 5.5V supply voltage range and is currently classified as Last Time Buy, indicating production discontinuation. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain component availability for new production runs and field replacements.

Substiute Parts

LMV331M7

Texas InstrumentsIn Stock: 2142LMV331M7 Datasheet

Current PartRFQ

LMV331M7/NOPB

Texas InstrumentsIn Stock: 2465LMV331M7/NOPB Datasheet

DirectRFQ

LMV331M7X

National SemiconductorIn Stock: 1799LMV331M7X Datasheet

Parametric EquivalentRFQ

LMV331M7X/NOPB

Texas InstrumentsIn Stock: 3362LMV331M7X/NOPB Datasheet

Parametric EquivalentRFQ

LMV331SE-7

Diodes IncorporatedIn Stock: 5297LMV331SE-7 Datasheet

UpgradeRFQ

LMV331W5-7

Diodes IncorporatedIn Stock: 20394LMV331W5-7 Datasheet

MFR RecommendedRFQ

TA75S393F,LF

Toshiba Semiconductor and StorageIn Stock: 150414TA75S393F,LF Datasheet

MFR RecommendedRFQ

TS391AILT

STMicroelectronicsIn Stock: 2154TS391AILT Datasheet

MFR RecommendedRFQ

TS391ILT

STMicroelectronicsIn Stock: 145525TS391ILT Datasheet

MFR RecommendedRFQ

TS391IYLT

STMicroelectronicsIn Stock: 21324TS391IYLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMV331M7 are classified based on the following substitution criteria:

Direct Manufacturer Substitutes maintain identical electrical specifications and packaging, differing only in packaging format (tape & reel versus cut tape) or product status transition from Last Time Buy to Active.

Parametric Equivalents provide identical electrical performance across all critical parameters: supply voltage range (2.7V ~ 5.5V), input offset voltage (7mV @ 5V), input bias current (0.25µA @ 5V), output current (84mA @ 5V), quiescent current (120µA), propagation delay (600ns), and operating temperature range (-40°C ~ 85°C). These parts maintain the same package footprint and mounting type.

Upgrade Substitutes offer improved performance characteristics while maintaining functional compatibility. These include reduced propagation delay (450ns versus 600ns) and extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C), with trade-offs in quiescent current or moisture sensitivity level.

Manufacturer Recommended Substitutes represent alternative solutions from different manufacturers that satisfy the core electrical requirements but may introduce variations in secondary parameters such as supply voltage range expansion, output current capability, or quiescent current consumption.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement with Identical Specifications: LMV331M7/NOPB (Texas Instruments, Active status) provides the most direct substitution path. This part maintains all electrical parameters and packaging specifications while transitioning from Last Time Buy to Active product status, ensuring continued availability and supply chain stability.

For Parametric Equivalence with Active Status: LMV331M7X/NOPB (Texas Instruments) offers identical electrical performance and maintains ROHS3 compliance. This variant is suitable for applications requiring active product status with no performance trade-offs.

For Enhanced Performance with Extended Temperature Range: LMV331SE-7 (Diodes Incorporated) reduces propagation delay from 600ns to 450ns and extends operating temperature to -40°C ~ 125°C. This upgrade is applicable in designs requiring faster response times or operation in elevated temperature environments. Package footprint remains compatible (SOT-353).

For Expanded Supply Voltage Range Applications: TS391AILT, TS391ILT, and TS391IYLT (STMicroelectronics) support supply voltage ranges of 2V ~ 36V with ±1V ~ 18V dual supply capability. These parts are suitable for applications requiring broader voltage compatibility. TS391IYLT includes AEC-Q100 automotive qualification. Package change to SOT-23-5 requires PCB layout modification.

For High-Volume Availability: TS391ILT (STMicroelectronics) maintains 145,424 pieces in stock, providing the highest inventory availability among all substitutes. This part is recommended for applications where supply chain continuity is critical.

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original LMV331M7 specification.

Frequently Asked Questions (FAQ)

Q: Can LMV331M7/NOPB be used as a direct replacement for LMV331M7? A: Yes. LMV331M7/NOPB is electrically and mechanically identical to LMV331M7. The primary difference is product status transition from Last Time Buy to Active, with identical packaging (SC-70-5), electrical specifications, and compliance certifications.

Q: What is the difference between LMV331M7X and LMV331M7X/NOPB? A: LMV331M7X is manufactured by National Semiconductor and is RoHS non-compliant with REACH affected status. LMV331M7X/NOPB is manufactured by Texas Instruments and maintains ROHS3 compliance with REACH unaffected status. Electrical specifications are identical. For new designs, LMV331M7X/NOPB is the preferred choice.

Q: Does LMV331SE-7 require PCB layout changes? A: LMV331SE-7 uses the SOT-353 package, which is mechanically compatible with the SC-70-5 footprint of the original LMV331M7. No PCB layout modifications are required. The primary benefit is improved propagation delay (450ns versus 600ns) and extended operating temperature range.

Q: Can TS391 series parts replace LMV331M7 in all applications? A: TS391 series parts (TS391AILT, TS391ILT, TS391IYLT) support expanded supply voltage ranges (2V ~ 36V) and extended operating temperature (-40°C ~ 125°C). However, they use SOT-23-5 packaging instead of SC-70-5, requiring PCB layout redesign. Electrical performance differs in output current (16mA versus 84mA) and quiescent current (1.25mA versus 120µA). These parts are suitable for new designs but not for direct PCB substitution.

Q: What is the significance of MSL rating differences? A: LMV331M7 has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. LMV331SE-7 and LMV331W5-7 have MSL 3 (168 Hours), requiring controlled storage and handling within 168 hours of package opening. For applications with extended shelf storage or humid environments, MSL 1 rated parts are preferred.

Q: Is TS391IYLT suitable for automotive applications? A: Yes. TS391IYLT includes AEC-Q100 automotive qualification, making it suitable for automotive-grade applications. However, the SOT-23-5 package requires PCB redesign compared to the original SC-70-5 footprint.

Q: What is the inventory status for each substitute? A: LMV331M7/NOPB: 2,400 pcs; LMV331M7X: 1,728 pcs; LMV331M7X/NOPB: 3,300 pcs; LMV331SE-7: 5,278 pcs; LMV331W5-7: 20,300 pcs; TA75S393F,LF: 150,404 pcs; TS391AILT: 2,100 pcs; TS391ILT: 145,424 pcs; TS391IYLT: 21,305 pcs. TS391ILT offers the highest availability for high-volume production requirements.