LMV331M5X Equivalent & Substitute Parts

Part Overview

The LMV331M5X is a general-purpose comparator manufactured by Texas Instruments, featuring CMOS, open-collector, and TTL output configurations in a SOT-23-5 surface mount package. This device operates across a 2.7V to 5.5V supply voltage range with a maximum input offset voltage of 7mV at 5V and a propagation delay of 600ns. The part is currently in Last Time Buy status, making identification of active equivalent and substitute components essential for ongoing design support and procurement planning.

Substiute Parts

LMV331M5X

Texas InstrumentsIn Stock: 19236LMV331M5X Datasheet

Current PartRFQ

LMV331M5

National SemiconductorIn Stock: 2603LMV331M5 Datasheet

Parametric EquivalentRFQ

LMV331M5/NOPB

Texas InstrumentsIn Stock: 2428LMV331M5/NOPB Datasheet

Parametric EquivalentRFQ

LMV331M5X/NOPB

Texas InstrumentsIn Stock: 20266LMV331M5X/NOPB Datasheet

Parametric EquivalentRFQ

LMV331W5-7

Diodes IncorporatedIn Stock: 20394LMV331W5-7 Datasheet

UpgradeRFQ

MAX9021AUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 22950MAX9021AUK+T Datasheet

MFR RecommendedRFQ

TS391RILT

STMicroelectronicsIn Stock: 17129TS391RILT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMV331M5X are classified based on strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Output Type: CMOS, Open-Collector, TTL configuration
• Supply Voltage Range: Minimum 2.7V operation
• Package Type: SOT-23-5 or compatible surface mount footprint
• Input Offset Voltage: Maximum 7mV at 5V
• Input Bias Current: Maximum 0.25µA at 5V
• Output Current: Minimum 84mA at 5V
• Quiescent Current: Maximum 120µA
• Propagation Delay: Maximum 600ns
• Operating Temperature: Minimum -40°C to 85°C range
• Compliance: ROHS3 and REACH requirements

Parametric Equivalent Parts (LMV331M5, LMV331M5/NOPB, LMV331M5X/NOPB) meet all electrical and mechanical specifications identically and differ only in packaging designation or lead finish.

Upgrade Part (LMV331W5-7) maintains core electrical compatibility while offering enhanced performance characteristics including faster propagation delay (450ns) and extended operating temperature range (-40°C to 125°C), though with slightly higher quiescent current (200µA) and different package designation (SOT-25).

Manufacturer Recommended Parts (MAX9021AUK+T, TS391RILT) provide functional equivalence with enhanced performance specifications. MAX9021AUK+T offers superior input offset voltage (1mV), lower input bias current (0.003µA), and extended temperature range. TS391RILT supports wider supply voltage range (2V ~ 36V) and extended temperature operation (-40°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalents): LMV331M5, LMV331M5/NOPB, and LMV331M5X/NOPB are recommended as primary replacements for the LMV331M5X. These parts maintain identical electrical specifications and are manufactured by Texas Instruments or National Semiconductor with Active product status. All three meet ROHS3 compliance and REACH requirements with MSL 1 rating, ensuring compatibility with standard manufacturing processes.

Performance Enhancement (Upgrade): LMV331W5-7 from Diodes Incorporated provides improved propagation delay (450ns versus 600ns) and extended operating temperature range (-40°C to 125°C). This upgrade is suitable for applications requiring faster response times or operation in elevated temperature environments. Note that quiescent current increases to 200µA and MSL rating is 3 (168 Hours), requiring controlled storage conditions.

Advanced Performance (Manufacturer Recommended): MAX9021AUK+T from Analog Devices Inc./Maxim Integrated offers superior input offset voltage (1mV) and significantly lower input bias current (0.003µA), with extended temperature range and lower quiescent current (5µA). This part is recommended for precision applications requiring minimal offset drift and low power consumption. Propagation delay extends to 8µs, which may not suit high-speed switching applications.

TS391RILT from STMicroelectronics supports the widest supply voltage range (2V ~ 36V, ±1V ~ 18V) and extended operating temperature (-40°C to 125°C), making it suitable for applications requiring operation across diverse voltage domains. Higher quiescent current (1.25mA) and reduced output current (16mA at 5V) must be evaluated against application requirements.

All substitute parts maintain ROHS3 compliance and REACH compliance status, ensuring regulatory alignment with the original LMV331M5X.

Frequently Asked Questions (FAQ)

Q: Can LMV331M5/NOPB be used as a direct replacement for LMV331M5X? A: Yes. LMV331M5/NOPB is a parametric equivalent with identical electrical specifications, supply voltage range (2.7V ~ 5.5V), input offset voltage (7mV @ 5V), output type (CMOS, Open-Collector, TTL), and operating temperature range (-40°C ~ 85°C). The primary difference is packaging designation and lead finish. Both are manufactured by Texas Instruments and maintain Active product status.

Q: What is the difference between LMV331M5X/NOPB and LMV331W5-7? A: LMV331M5X/NOPB maintains the original 600ns propagation delay and -40°C to 85°C operating range. LMV331W5-7 improves propagation delay to 450ns and extends operating temperature to 125°C, but increases quiescent current from 120µA to 200µA and uses SOT-25 packaging instead of SOT-23-5. LMV331W5-7 is suitable for applications requiring faster response or higher temperature operation.

Q: Is MAX9021AUK+T compatible with the LMV331M5X footprint? A: Yes. MAX9021AUK+T uses the same SOT-23-5 package and surface mount footprint as LMV331M5X. However, electrical performance differs significantly: input offset voltage is 1mV (versus 7mV), input bias current is 0.003µA (versus 0.25µA), and propagation delay extends to 8µs (versus 600ns). Verify application timing requirements before substitution.

Q: Can TS391RILT operate at the same supply voltages as LMV331M5X? A: TS391RILT supports a wider supply voltage range (2V ~ 36V, ±1V ~ 18V) that encompasses the LMV331M5X range (2.7V ~ 5.5V). However, output current at 5V is reduced to 16mA (versus 84mA), and quiescent current increases to 1.25mA (versus 120µA). Verify output drive capability and power consumption requirements before substitution.

Q: What is the impact of MSL rating differences on component handling? A: LMV331M5X, LMV331M5/NOPB, LMV331M5X/NOPB, MAX9021AUK+T, and TS391RILT carry MSL 1 (Unlimited) rating, allowing indefinite shelf storage without moisture bake-out. LMV331W5-7 carries MSL 3 (168 Hours) rating, requiring moisture bake-out after 168 hours of exposure to ambient conditions exceeding 30°C and 60% relative humidity. Verify storage and handling procedures accordingly.

Q: Are all substitute parts ROHS3 and REACH compliant? A: Yes. All listed substitute parts (LMV331M5, LMV331M5/NOPB, LMV331M5X/NOPB, LMV331W5-7, MAX9021AUK+T, TS391RILT) are ROHS3 Compliant and REACH Unaffected, maintaining regulatory alignment with the original LMV331M5X.

Q: Which substitute part is recommended for low-power applications? A: MAX9021AUK+T offers the lowest quiescent current at 5µA (versus 120µA for LMV331M5X), making it the optimal choice for battery-powered or low-power applications. Trade-off considerations include extended propagation delay (8µs) and reduced output current specification.