LMV331IDBVRE4 Equivalent & Substitute Parts

Part Overview

The LMV331IDBVRE4 is a general-purpose comparator IC manufactured by Texas Instruments in SOT-23-5 surface mount packaging. This part is discontinued at DiGi Electronics but remains available through inventory stock of 4004 pieces. The comparator features open-collector output, single supply operation from 2.7V to 5.5V, and is designed for general-purpose signal comparison applications. Due to its discontinued status, equivalent and substitute parts from active product lines are necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LMV331IDBVRE4
Category	Linear - Comparator
Type	General Purpose
Number of Elements	1
Output Type	Open-Collector
Supply Voltage Range	2.7V ~ 5.5V
Input Offset Voltage (Max)	7mV @ 5V
Input Bias Current (Max)	0.25µA @ 5V
Output Current (Typ)	84mA @ 5V
Quiescent Current (Max)	150µA
Propagation Delay (Max)	600ns
Operating Temperature	-40°C ~ 85°C
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-23-5
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LMV331IDBVRE4 is determined by the following critical parameters: supply voltage range (2.7V ~ 5.5V), output type (open-collector configuration), package type (SOT-23-5), number of elements (single comparator), and operating temperature range (-40°C ~ 85°C). Substitute parts are grouped into three categories based on their relationship to the main part:

MFR Recommended Substitutes - Parts from the same LMV331 base product family with identical electrical specifications and active product status. These include LMV331M5/NOPB, LMV331M5X/NOPB, LMV331M7/NOPB, and LMV331M7X/NOPB, which differ primarily in packaging format (Cut Tape vs. Tape & Reel) and package case (SOT-23-5 vs. SC-70-5).

Parametric Equivalents - Parts with identical electrical performance and SOT-23-5 packaging but different packaging formats. LMV331IDBVR and LMV331IDBVT maintain the same specifications as the main part with active product status.

Cross-Manufacturer Alternatives - Parts from different manufacturers meeting the same functional and electrical requirements. LMV331W5-7 (Diodes Incorporated) and MAX9021AUK+T (Analog Devices Inc./Maxim Integrated) provide comparable performance with variations in specific parameters such as quiescent current, propagation delay, and operating temperature range.

Parameter Comparison

Part Number	Manufacturer	Output Type	Supply Voltage	Input Offset (Max)	Quiescent Current (Max)	Propagation Delay (Max)	Operating Temp	Package	Product Status
LMV331IDBVRE4	Texas Instruments	Open-Collector	2.7V ~ 5.5V	7mV @ 5V	150µA	600ns	-40°C ~ 85°C	SOT-23-5	Discontinued
LMV331M5/NOPB	Texas Instruments	CMOS, Open-Collector, TTL	2.7V ~ 5.5V	7mV @ 5V	120µA	600ns	-40°C ~ 85°C	SOT-23-5	Active
LMV331M5X/NOPB	Texas Instruments	CMOS, Open-Collector, TTL	2.7V ~ 5.5V	7mV @ 5V	120µA	600ns	-40°C ~ 85°C	SOT-23-5	Active
LMV331M7/NOPB	Texas Instruments	CMOS, Open-Collector, TTL	2.7V ~ 5.5V	7mV @ 5V	120µA	600ns	-40°C ~ 85°C	SC-70-5	Active
LMV331M7X/NOPB	Texas Instruments	CMOS, Open-Collector, TTL	2.7V ~ 5.5V	7mV @ 5V	120µA	600ns	-40°C ~ 85°C	SC-70-5	Active
LMV331IDBVR	Texas Instruments	Open-Collector	2.7V ~ 5.5V	7mV @ 5V	150µA	600ns	-40°C ~ 85°C	SOT-23-5	Active
LMV331IDBVT	Texas Instruments	Open-Collector	2.7V ~ 5.5V	7mV @ 5V	150µA	600ns	-40°C ~ 85°C	SOT-23-5	Active
LMV331W5-7	Diodes Incorporated	Open-Collector	2.7V ~ 5.5V	7mV @ 5V	200µA	450ns	-40°C ~ 125°C	SOT-25	Active
MAX9021AUK+T	Analog Devices Inc./Maxim Integrated	CMOS, Rail-to-Rail, TTL	2.5V ~ 5.5V, ±1.25V ~ 2.75V	1mV @ 5V	5µA	8µs	-40°C ~ 125°C	SOT-23-5	Active

Engineering Selection Recommendations

For direct replacement of the discontinued LMV331IDBVRE4 in existing designs, LMV331IDBVR and LMV331IDBVT are the primary selections. Both parts maintain identical electrical specifications, SOT-23-5 packaging, and open-collector output configuration. LMV331IDBVR is available in Cut Tape & Digi-Reel format with 89,300 pieces in stock, while LMV331IDBVT is supplied in Tape & Reel format with 4,400 pieces in stock. Both are active products with ROHS3 compliance and unlimited moisture sensitivity rating.

For applications where package format flexibility is acceptable, LMV331M5/NOPB and LMV331M5X/NOPB offer improved quiescent current performance (120µA vs. 150µA) while maintaining identical electrical specifications and SOT-23-5 packaging. LMV331M5X/NOPB has the highest inventory availability at 20,200 pieces.

For designs requiring smaller package footprint, LMV331M7/NOPB and LMV331M7X/NOPB provide the same electrical performance in SC-70-5 package format, suitable for space-constrained applications.

LMV331W5-7 from Diodes Incorporated is a cross-manufacturer alternative with extended operating temperature range (-40°C ~ 125°C) and faster propagation delay (450ns vs. 600ns), though it exhibits higher quiescent current (200µA). This part is suitable for applications requiring enhanced temperature performance.

MAX9021AUK+T from Analog Devices Inc./Maxim Integrated offers superior electrical characteristics including lower input offset voltage (1mV vs. 7mV), significantly lower quiescent current (5µA vs. 150µA), and rail-to-rail output capability. However, it features slower propagation delay (8µs vs. 600ns) and is appropriate only for applications where speed is not critical. This part is recommended for low-power applications requiring extended temperature range.

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can LMV331M5/NOPB directly replace LMV331IDBVRE4 in my circuit?

A: Yes. LMV331M5/NOPB is electrically equivalent with identical supply voltage range (2.7V ~ 5.5V), input offset voltage (7mV @ 5V), propagation delay (600ns), and operating temperature range (-40°C ~ 85°C). The primary difference is improved quiescent current (120µA vs. 150µA). Both use SOT-23-5 packaging and open-collector output configuration. The part is active with 2,400 pieces in stock.

Q: What is the difference between LMV331M5/NOPB and LMV331M5X/NOPB?

A: Both parts are electrically identical with the same specifications and SOT-23-5 packaging. The difference is in packaging format: LMV331M5/NOPB is supplied in Cut Tape & Digi-Reel format (2,400 pieces available), while LMV331M5X/NOPB is also in Cut Tape & Digi-Reel format (20,200 pieces available). Selection depends on procurement volume and supplier availability.

Q: Why would I choose LMV331M7/NOPB over LMV331M5/NOPB?

A: LMV331M7/NOPB uses SC-70-5 package instead of SOT-23-5. This smaller package is suitable for space-constrained PCB layouts. Electrical specifications remain identical. Selection depends on available board space and PCB design requirements.

Q: Is MAX9021AUK+T a suitable replacement for LMV331IDBVRE4?

A: MAX9021AUK+T is functionally compatible but with significant performance differences. It offers superior input offset voltage (1mV vs. 7mV), much lower quiescent current (5µA vs. 150µA), and extended operating temperature (-40°C ~ 125°C). However, propagation delay is substantially slower (8µs vs. 600ns). This part is suitable only for applications where speed is not critical and low power consumption is required.

Q: Can I use LMV331W5-7 from Diodes Incorporated as a substitute?

A: Yes. LMV331W5-7 maintains the same supply voltage range (2.7V ~ 5.5V), input offset voltage (7mV @ 5V), and output type (open-collector). It offers faster propagation delay (450ns vs. 600ns) and extended operating temperature range (-40°C ~ 125°C). Quiescent current is higher (200µA vs. 150µA). The part uses SOT-25 package, which is mechanically compatible with SOT-23-5 footprints. This part is active with 20,300 pieces in stock.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance consistent with the original LMV331IDBVRE4. Moisture sensitivity levels vary: LMV331 variants from Texas Instruments maintain MSL 1 (Unlimited), while LMV331W5-7 has MSL 3 (168 Hours).

Q: What packaging formats are available for LMV331 comparators?

A: LMV331 comparators are available in two package types: SOT-23-5 (used by LMV331M5, LMV331M5X, LMV331IDBVR, LMV331IDBVT) and SC-70-5 (used by LMV331M7, LMV331M7X). Both are surface mount packages. Packaging format options include Cut Tape & Digi-Reel and Tape & Reel, affecting procurement and handling requirements.

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