LMV331IDCKTG4 Equivalent & Substitute Parts

Part Overview

The LMV331IDCKTG4 is a general-purpose comparator IC manufactured by Texas Instruments, featuring open-collector output in SC-70-5 surface mount packaging. This single-element comparator operates across a 2.7V to 5.5V supply voltage range and is designed for low-power applications requiring fast response times. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional and electrical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LMV331IDCKTG4
Type	General Purpose Comparator
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	5-TSSOP, SC-70-5, SOT-353
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LMV331IDCKTG4 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Supply voltage range: 2.7V ~ 5.5V (must match or exceed)
Output type: Open-Collector (functional requirement)
Input offset voltage: 7mV @ 5V (maximum specification)
Input bias current: 0.25µA @ 5V (maximum specification)
Output current: 84mA @ 5V (typical specification)
Propagation delay: 600ns (maximum specification)
Operating temperature: -40°C ~ 85°C (minimum requirement)

Mechanical Compatibility Requirements:

Package type: SC-70-5, SOT-353, or 5-TSSOP (pin-compatible packages)
Mounting type: Surface Mount
Pin count: 5 pins

Compliance Requirements:

RoHS3 Compliant
REACH Unaffected status

Substitute parts are grouped into two categories: MFR Recommended substitutes (direct functional replacements with identical or superior specifications) and Parametric Equivalents (parts meeting all electrical and mechanical requirements).

Parameter Comparison

Parameter	LMV331IDCKTG4	LMV331IDCKT	LMV331M5/NOPB	LMV331M5X/NOPB	LMV331M7/NOPB	LMV331M7X/NOPB	LMV331IDCKR	LMV331SE-7
Manufacturer	TI	TI	TI	TI	TI	TI	TI	Diodes Inc.
Supply Voltage	2.7V~5.5V	2.7V~5.5V	2.7V~5.5V	2.7V~5.5V	2.7V~5.5V	2.7V~5.5V	2.7V~5.5V	2.7V~5.5V
Output Type	Open-Collector	Open-Collector	CMOS, Open-Collector, TTL	CMOS, Open-Collector, TTL	CMOS, Open-Collector, TTL	CMOS, Open-Collector, TTL	Open-Collector	Open-Collector
Input Offset (Max)	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V
Input Bias (Max)	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V
Output Current (Typ)	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V
Quiescent Current (Max)	150µA	150µA	120µA	120µA	120µA	120µA	150µA	120µA
Propagation Delay (Max)	600ns	600ns	600ns	600ns	600ns	600ns	600ns	450ns
Operating Temperature	-40°C~85°C	-40°C~85°C	-40°C~85°C	-40°C~85°C	-40°C~85°C	-40°C~85°C	-40°C~85°C	-40°C~125°C
Package	SC-70-5	SC-70-5	SOT-23-5	SOT-23-5	SC-70-5	SC-70-5	SC-70-5	SOT-353
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

Direct Replacement (Identical Package and Specifications):

LMV331IDCKT and LMV331IDCKR are the primary substitutes for LMV331IDCKTG4. Both maintain identical electrical specifications, SC-70-5 packaging, and open-collector output configuration. LMV331IDCKR offers superior inventory availability (65,400 units) compared to LMV331IDCKT (2,400 units). Both parts are active products with ROHS3 compliance and MSL-1 rating, ensuring long-term supply continuity.

Package-Compatible Alternatives (SC-70-5 Equivalent):

LMV331M7/NOPB and LMV331M7X/NOPB provide SC-70-5 packaging compatibility with enhanced output type flexibility (CMOS, Open-Collector, TTL). These parts feature reduced quiescent current (120µA versus 150µA) and are available in active status. LMV331M7X/NOPB offers higher inventory (3,300 units) than LMV331M7/NOPB (2,400 units).

Alternative Package Options (SOT-23-5):

LMV331M5/NOPB and LMV331M5X/NOPB provide SOT-23-5 packaging with identical electrical performance. These require PCB layout modification due to different pin spacing. LMV331M5X/NOPB provides significantly higher inventory (20,200 units), making it suitable for high-volume applications requiring package flexibility.

Cross-Manufacturer Substitute:

LMV331SE-7 from Diodes Incorporated offers SOT-353 packaging with superior propagation delay (450ns versus 600ns) and extended operating temperature range (-40°C to 125°C). However, MSL-3 rating (168 hours) requires controlled storage conditions compared to MSL-1 of Texas Instruments variants. This part is suitable for applications requiring enhanced thermal performance.

Frequently Asked Questions (FAQ)

Q: Can LMV331M5/NOPB replace LMV331IDCKTG4 directly on the PCB?

A: No. LMV331M5/NOPB uses SOT-23-5 packaging while LMV331IDCKTG4 uses SC-70-5. Although both are 5-pin surface mount packages, pin spacing and footprint dimensions differ. PCB layout modification is required. For direct PCB replacement without layout changes, use LMV331IDCKT or LMV331IDCKR.

Q: What is the difference between LMV331M7/NOPB and LMV331M7X/NOPB?

A: Both parts are electrically identical with SC-70-5 packaging. The primary difference is packaging format: LMV331M7/NOPB is supplied in Tape & Reel (TR), while LMV331M7X/NOPB is supplied in Cut Tape (CT) & Digi-Reel. LMV331M7X/NOPB offers higher inventory availability (3,300 units).

Q: Is LMV331SE-7 from Diodes Incorporated a suitable replacement?

A: LMV331SE-7 meets all electrical specifications and operates across the required voltage range. However, it uses SOT-353 packaging (different from SC-70-5) and carries MSL-3 rating requiring controlled storage. It is suitable for applications where package change is acceptable and enhanced temperature performance (-40°C to 125°C) is beneficial.

Q: Why do some substitutes show lower quiescent current?

A: LMV331M5/NOPB, LMV331M5X/NOPB, LMV331M7/NOPB, and LMV331M7X/NOPB specify 120µA maximum quiescent current versus 150µA for LMV331IDCKTG4. This represents improved power efficiency and is not a limitation for substitution. Lower quiescent current is a beneficial characteristic.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes maintain ROHS3 compliance and REACH Unaffected status, meeting environmental and regulatory requirements identical to the original part.

Q: What is the significance of MSL rating differences?

A: LMV331IDCKTG4 and all Texas Instruments variants carry MSL-1 (Unlimited) rating, allowing indefinite storage without moisture baking. LMV331SE-7 carries MSL-3 (168 hours), requiring moisture baking after 168 hours of exposure to ambient conditions. For applications with extended storage or high-humidity environments, MSL-1 rated parts are preferred.

Q: Which substitute offers the best inventory availability?

A: LMV331M5X/NOPB provides the highest inventory (20,200 units) among all substitutes. For SC-70-5 package preference, LMV331IDCKR offers 65,400 units with identical specifications to the original part.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message