LM339FV-E2 Equivalent & Substitute Parts

Part Overview

The LM339FV-E2 is a general-purpose quad comparator manufactured by Rohm Semiconductor in 14-SSOP-B surface mount packaging. This device integrates four independent voltage comparators suitable for precision measurement, threshold detection, and signal conditioning applications. The part is currently in active production status with 3207 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, experiences supply constraints, or when design requirements permit operation within broader electrical specifications. The LM339FV-E2 has documented substitutes including LMV339MX/NOPB, LMV339MTX/NOPB, LMV339IRUCR, and LMV339IPW, which maintain functional equivalence across the specified parameter range.

Key Parameters

Parameter	LM339FV-E2 Specification
Manufacturer	Rohm Semiconductor
Package / Case	14-LSSOP (0.173", 4.40mm Width)
Supplier Device Package	14-SSOP-B
Number of Elements	4
Type	General Purpose
Voltage - Supply, Single/Dual (±)	3V ~ 32V, ±1.5V ~ 16V
Voltage - Input Offset (Max)	4.5mV @ 1.4V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	2mA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the LM339FV-E2 is determined by the following critical parameters:

Functional Equivalence Criteria:

Four independent comparator elements
General-purpose comparator topology
Supply voltage range compatibility (minimum 3V single supply or ±1.5V dual supply)
Input offset voltage within acceptable tolerance
Input bias current specification of 0.25µA @ 5V
Output current capability of 16mA @ 5V or greater
Quiescent current not exceeding 2mA
Operating temperature range of -40°C to 85°C minimum

Package Compatibility:

Surface mount technology required
14-pin package format (SSOP, TSSOP, SOIC, or QFN variants acceptable)
Pin-compatible footprints with 0.173" or 0.154" body width

Compliance Requirements:

ROHS3 compliance mandatory
REACH unaffected status required
EAR99 export classification

Substitute parts meeting these criteria maintain functional interchangeability while permitting design flexibility across packaging and output type variations.

Parameter Comparison

Parameter	LM339FV-E2	AS339GTR-G1	AS339MTR-E1	LMV339IPW	LMV339IRUCR	LMV339MT/NOPB	LMV339MTX/NOPB	LMV339MX/NOPB
Manufacturer	Rohm	Diodes Inc.	Diodes Inc.	Texas Instruments	Texas Instruments	Texas Instruments	National Semi.	National Semi.
Number of Elements	4	4	4	4	4	4	4	4
Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Output Type	—	Open-Collector	Open-Collector	Open-Collector	Open-Collector	CMOS, Open-Collector, TTL	CMOS, Open-Collector, TTL	CMOS, Open-Collector, TTL
Voltage - Supply, Single/Dual (±)	3V ~ 32V, ±1.5V ~ 16V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
Voltage - Input Offset (Max)	4.5mV @ 1.4V	5mV @ 5V	5mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V
Current - 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
Current - Output (Typ)	16mA @ 5V	16mA @ 5V	16mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V
Current - Quiescent (Max)	2mA	2mA	2mA	350µA	350µA	300µA	300µA	300µA
Propagation Delay (Max)	—	—	—	600ns	600ns	600ns	600ns	600ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-LSSOP (0.173", 4.40mm)	14-TSSOP (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)	14-TSSOP (0.173", 4.40mm)	14-XFQFN	14-TSSOP (0.173", 4.40mm)	14-TSSOP (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Last Time Buy	Last Time Buy	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

AS339GTR-G1 and AS339MTR-E1 from Diodes Incorporated maintain the closest electrical alignment with the LM339FV-E2. Both devices support the required supply voltage range, input bias current, and output current specifications. AS339GTR-G1 is available in 14-TSSOP packaging with 53,080 units in stock, while AS339MTR-E1 is offered in 14-SOIC format with 44,546 units available. Both are ROHS3 compliant and REACH unaffected. The primary design consideration is MSL rating: both Diodes parts carry MSL-3 (168 hours) versus the LM339FV-E2's MSL-1 (unlimited), requiring appropriate moisture control during storage and assembly.

Extended Supply Range Substitutes:

LMV339MT/NOPB and LMV339MX/NOPB from Texas Instruments and National Semiconductor provide active product status with unlimited MSL ratings. These devices operate within a narrower supply voltage range (2.7V ~ 5.5V) compared to the LM339FV-E2 (3V ~ 32V), making them suitable only for applications within this restricted envelope. Both offer enhanced output current capability (84mA versus 16mA) and documented propagation delay specifications (600ns). LMV339MT/NOPB is available in 14-TSSOP with 1,526 units in stock, while LMV339MX/NOPB is offered in 14-SOIC format with 5,200 units available.

Last-Time-Buy Alternatives:

LMV339IPW and LMV339IRUCR from Texas Instruments are designated as Last Time Buy products. LMV339IPW is packaged in 14-TSSOP with 2,100 units in stock, while LMV339IRUCR is available in 14-QFN (2x2) format with 23,400 units. Both devices feature MSL-1 ratings and extended operating temperature range (-40°C ~ 125°C). These parts are suitable for new designs only if supply continuity beyond current inventory is not required.

Package Selection Guidance:

For direct footprint compatibility with 14-LSSOP, select AS339GTR-G1 (14-TSSOP) or LMV339IPW (14-TSSOP), as TSSOP and LSSOP share identical pitch and body width specifications. For designs permitting 14-SOIC footprint, AS339MTR-E1 or LMV339MX/NOPB provide alternative mounting options. LMV339IRUCR in 14-QFN format requires PCB redesign but offers the smallest footprint.

Frequently Asked Questions (FAQ)

Q: Can AS339GTR-G1 directly replace LM339FV-E2 in existing designs?

A: AS339GTR-G1 is electrically compatible within the specified parameter range. Both devices integrate four general-purpose comparators with matching input bias current (0.25µA @ 5V) and output current (16mA @ 5V). The 14-TSSOP package is footprint-compatible with 14-LSSOP. Primary design consideration is the MSL-3 moisture sensitivity rating on AS339GTR-G1 versus MSL-1 on the LM339FV-E2, requiring appropriate handling during assembly.

Q: What is the key difference between Diodes and Texas Instruments substitutes?

A: Diodes Incorporated parts (AS339GTR-G1, AS339MTR-E1) maintain the full supply voltage range of the LM339FV-E2 (2V ~ 36V single supply). Texas Instruments LMV339 series devices operate within a narrower range (2.7V ~ 5.5V). Select Diodes parts for applications requiring extended supply voltage operation; select Texas Instruments parts only when supply voltage remains within 2.7V ~ 5.5V.

Q: Are LMV339IPW and LMV339IRUCR suitable for new production designs?

A: Both parts carry Last Time Buy status, indicating discontinued production. LMV339IPW has 2,100 units and LMV339IRUCR has 23,400 units currently in stock. These parts are suitable for new designs only if supply requirements can be met from existing inventory. For long-term production, select active-status alternatives: AS339GTR-G1, AS339MTR-E1, LMV339MT/NOPB, or LMV339MX/NOPB.

Q: What packaging options are available for the LM339FV-E2 substitutes?

A: Five package formats are available across the substitute family: 14-TSSOP (AS339GTR-G1, LMV339IPW, LMV339MT/NOPB, LMV339MTX/NOPB), 14-SOIC (AS339MTR-E1, LMV339MX/NOPB), and 14-QFN 2x2 (LMV339IRUCR). TSSOP and LSSOP packages share identical pitch and body width, permitting direct footprint substitution. SOIC and QFN formats require PCB layout modification.

Q: How does quiescent current differ between substitute options?

A: The LM339FV-E2 specifies 2mA maximum quiescent current. Diodes AS339 series maintains this specification (2mA). Texas Instruments LMV339 series devices specify higher quiescent current: 300µA to 350µA maximum. For battery-powered or low-power applications, Diodes parts provide superior power efficiency. Texas Instruments parts are acceptable for line-powered applications where quiescent current is not a limiting factor.

Q: What is the significance of MSL rating differences?

A: MSL-1 (unlimited) permits indefinite storage without moisture absorption concerns. MSL-3 (168 hours) requires baking at 125°C for 24 hours if the part has been exposed to ambient humidity for more than 168 hours prior to reflow soldering. The LM339FV-E2 carries MSL-1; Diodes AS339 parts carry MSL-3. For high-volume production with extended component storage, MSL-1 parts reduce process risk.

Q: Can I use LMV339 parts in applications requiring the full 3V ~ 32V supply range?

A: No. LMV339 series devices are specified for 2.7V ~ 5.5V operation only. Applications requiring supply voltages above 5.5V or below 2.7V must use AS339GTR-G1 or AS339MTR-E1 from Diodes Incorporated, which support 2V ~ 36V single supply operation.

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