LM339APWG4 Equivalent & Substitute Parts

Part Overview

The LM339APWG4 is a general-purpose quad comparator IC manufactured by Texas Instruments in 14-TSSOP surface-mount packaging. This device features four independent open-collector comparators suitable for analog signal comparison applications across industrial and consumer electronics. The part is classified as Last Time Buy, indicating limited future availability. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and accommodate varying operational requirements across different temperature ranges and supply voltage specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM339APWG4
Manufacturer	Texas Instruments
Number of Elements	4
Output Type	Open-Collector
Voltage - Supply, Single/Dual (±)	2V ~ 30V, ±1V ~ 15V
Voltage - Input Offset (Max)	3mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	2.5mA
Operating Temperature	0°C ~ 70°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM339APWG4 is determined by the following critical parameters:

Primary Substitution Criteria:

Four independent comparator elements
Open-collector or compatible output configuration
14-TSSOP surface-mount package (0.173", 4.40mm width)
Supply voltage range overlap: minimum 2V single supply or ±1V dual supply
Input offset voltage within acceptable tolerance for analog comparison circuits
Input bias current ≤ 0.25µA @ 5V
Output current capability ≥ 16mA

Substitution Groups:

Group 1 - Direct Texas Instruments Equivalents (Identical Specifications): LM339APW and LM339APWR maintain identical electrical specifications and packaging to the LM339APWG4, differing only in packaging format (tube vs. cut tape/digi-reel).

Group 2 - Extended Temperature Range Substitutes (Broader Operating Window): LM239APT, LM239PT, LM2901PT, and LM2901YPT extend operating temperature to -40°C ~ 125°C or -40°C ~ 105°C, accommodating industrial and automotive applications beyond the standard 0°C ~ 70°C range.

Group 3 - Cross-Manufacturer Alternatives (Functional Equivalence): BA2901SFV-E2 (Rohm Semiconductor) and LM2901AT14-13 (Diodes Incorporated) provide functional equivalence with comparable electrical performance and 14-TSSOP packaging, though with extended temperature specifications.

Group 4 - Specialized Variants: LM339DTBR2G (onsemi) and LM2901YPT (automotive-qualified) serve applications requiring specific certifications or temperature ratings.

Parameter Comparison

Part Number	Manufacturer	Number of Elements	Output Type	Supply Voltage (Single/Dual)	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Package	Product Status
LM339APWG4	Texas Instruments	4	Open-Collector	2V~30V, ±1V~15V	3mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-TSSOP	Last Time Buy
LM339APW	Texas Instruments	4	Open-Collector	2V~30V, ±1V~15V	3mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-TSSOP	Last Time Buy
LM339APWR	Texas Instruments	4	Open-Collector	2V~30V, ±1V~15V	3mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-TSSOP	Active
BA2901SFV-E2	Rohm Semiconductor	4	Open-Collector	2V~36V, ±1V~18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-LSSOP	Active
LM239APT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~32V, ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP	Active
LM239PT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~32V, ±1V~16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP	Active
LM2901AT14-13	Diodes Incorporated	4	General Purpose	2V~36V, ±1V~18V	2mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	Active
LM2901PT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~32V, ±1V~16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	Active
LM2901YPT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~32V, ±1V~16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	Active
LM339APT	STMicroelectronics	4	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~32V, ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP	Active
LM339DTBR2G	onsemi	4	CMOS, Open-Collector, TTL	3V~36V, ±1.5V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): LM339APWR is the primary recommendation for direct substitution. It maintains identical electrical specifications and 14-TSSOP packaging while offering Active product status and significantly higher inventory (212,800 pcs) compared to the Last Time Buy LM339APWG4. The only difference is packaging format (cut tape/digi-reel vs. tube), which does not affect circuit performance.

For Extended Temperature Applications (-40°C to 105°C or -40°C to 125°C): LM239APT, LM239PT, LM2901PT, and LM2901AT14-13 are suitable when designs require operation beyond the standard 0°C ~ 70°C range. LM239APT offers the lowest input offset voltage (2mV @ 30V) and lowest input bias current (0.1µA @ 5V) among extended-temperature options. LM2901AT14-13 extends to -40°C ~ 125°C, providing the widest temperature coverage.

For Automotive Applications: LM2901YPT carries AEC-Q100 qualification and automotive-grade designation, suitable for automotive and harsh-environment applications requiring temperature operation to -40°C ~ 125°C.

For Cross-Manufacturer Sourcing: BA2901SFV-E2 (Rohm Semiconductor) provides functional equivalence with extended supply voltage range (2V~36V single, ±1V~18V dual) and active product status. LM2901AT14-13 (Diodes Incorporated) offers comparable performance with the widest temperature range (-40°C ~ 125°C).

Compliance Considerations: All listed substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements. Moisture sensitivity levels range from MSL 1 (unlimited) to MSL 3 (168 hours), with most substitutes at MSL 1.

Frequently Asked Questions (FAQ)

Q: Can LM339APWR be used as a direct replacement for LM339APWG4? A: Yes. LM339APWR is electrically identical to LM339APWG4, with the same supply voltage range (2V~30V single, ±1V~15V dual), input offset voltage (3mV @ 30V), and output current (20mA). The difference is packaging format: LM339APWR uses cut tape/digi-reel while LM339APWG4 uses tube packaging. Both are 14-TSSOP surface-mount packages with identical pinouts and performance.

Q: What is the difference between LM339 and LM2901 series? A: Both are quad comparators in 14-TSSOP packaging with four independent elements. The LM339 series typically operates 0°C ~ 70°C, while LM2901 variants extend to -40°C ~ 125°C. Electrical specifications are comparable, with LM2901 variants offering broader temperature coverage for industrial and automotive applications.

Q: Can I use BA2901SFV-E2 instead of LM339APWG4? A: BA2901SFV-E2 is functionally equivalent with four open-collector comparators in 14-LSSOP packaging. It supports extended supply voltage (2V~36V single, ±1V~18V dual) and operates -40°C ~ 105°C. The package is mechanically compatible (14-pin, 0.173" width), though input offset voltage is higher (7mV @ 5V vs. 3mV @ 30V). Verify circuit tolerance for offset voltage differences before substitution.

Q: Which substitute offers the lowest input offset voltage? A: LM239APT and LM339APT both specify 2mV @ 30V input offset voltage, lower than the original LM339APWG4 (3mV @ 30V). Both are STMicroelectronics parts in 14-TSSOP packaging with extended temperature operation (-40°C ~ 105°C for LM239APT; 0°C ~ 70°C for LM339APT).

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original LM339APWG4.

Q: What is the difference between 14-TSSOP and 14-LSSOP packaging? A: Both are 14-pin surface-mount packages with 0.173" (4.40mm) width. TSSOP (Thin Shrink Small Outline Package) and LSSOP (Leaded Small Outline Package) are mechanically compatible with identical pinouts. The primary difference is lead configuration and thermal characteristics, but both are suitable for standard PCB assembly processes.

Q: Can I use LM2901YPT for automotive applications? A: Yes. LM2901YPT carries AEC-Q100 qualification and automotive-grade designation, making it suitable for automotive and harsh-environment applications. It operates -40°C ~ 125°C and maintains ROHS3 compliance.

Q: What inventory levels are available for active substitutes? A: LM339APWR offers the highest inventory (212,800 pcs). Other active substitutes include LM2901YPT (55,300 pcs), LM239PT (65,200 pcs), LM2901PT (26,244 pcs), LM339APT (16,250 pcs), LM239APT (1,345 pcs), LM2901AT14-13 (5,200 pcs), BA2901SFV-E2 (4,664 pcs), and LM339DTBR2G (2,510 pcs).

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