LM339PWR Equivalent & Substitute Parts

Part Overview

The LM339PWR is a general-purpose comparator IC manufactured by Texas Instruments, featuring four independent differential comparators with open-collector outputs in a 14-TSSOP surface-mount package. This device operates across a wide supply voltage range of 2V to 30V (single supply) or ±1V to ±15V (dual supply), making it suitable for analog signal comparison applications in industrial, consumer, and automotive circuits.

The LM339PWR is currently in active production status. Equivalent and substitute parts are identified based on matching electrical performance parameters, compatible package formats, and functional equivalence within the general-purpose comparator category.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LM339PWR
Type	General Purpose Comparator
Number of Elements	4
Output Type	Open-Collector
Supply Voltage Range	2V ~ 30V (Single), ±1V ~ ±15V (Dual)
Input Offset Voltage (Max)	5mV @ 30V
Input Bias Current (Max)	0.25µA @ 5V
Output Current (Typ)	20mA
Quiescent Current (Max)	2.5mA
Operating Temperature	0°C ~ 70°C
Package	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LM339PWR are classified based on the following substitution criteria:

Parametric Equivalents maintain identical electrical specifications and package format, differing only in packaging method (tape & reel versus cut tape). These parts are direct functional replacements with no design modifications required.

Direct Manufacturer Alternatives from different manufacturers provide equivalent performance within the same package family but may have minor variations in output type classification or supply voltage range limits. These parts are suitable where manufacturer flexibility is acceptable.

Manufacturer-Recommended Alternatives offer enhanced specifications in specific parameters (extended temperature range, improved input offset voltage, or higher supply voltage capability) while maintaining core functional compatibility. These parts are appropriate for applications requiring extended operating conditions.

Key Parameters Determining Substitutability:

Number of comparator elements (must be 4)
Output type (open-collector or compatible logic output)
Supply voltage range (minimum 2V ~ 30V single supply capability)
Package format (14-TSSOP or compatible 14-pin surface-mount packages)
Input offset voltage and bias current specifications
Operating temperature range compatibility with application requirements

Parameter Comparison

Part Number	Manufacturer	Package	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Product Status
LM339PWR	Texas Instruments	14-TSSOP	2V~30V / ±1V~±15V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	Active
LM339PWRG3	Texas Instruments	14-TSSOP	2V~30V / ±1V~±15V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	Active
LM339PWRG4	Texas Instruments	14-TSSOP	2V~30V / ±1V~±15V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	Obsolete
LM339D	STMicroelectronics	14-SOIC	2V~32V / ±1V~±16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	Active
AS339GTR-G1	Diodes Incorporated	14-TSSOP	2V~36V / ±1V~±18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 85°C	Active
BA2901SFV-E2	Rohm Semiconductor	14-LSSOP	2V~36V / ±1V~±18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	Active
LM239APT	STMicroelectronics	14-TSSOP	2V~32V / ±1V~±16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	Active
LM239DTBR2G	onsemi	14-TSSOP	3V~36V / ±1.5V~±18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-25°C ~ 85°C	Active
LM239PT	STMicroelectronics	14-TSSOP	2V~32V / ±1V~±16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	Active
LM2901AS14-13	Diodes Incorporated	14-SOIC	2V~36V / ±1V~±18V	2mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
LM2901PT	STMicroelectronics	14-TSSOP	2V~32V / ±1V~±16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active

Engineering Selection Recommendations

For Direct Replacement (No Design Changes): LM339PWRG3 is the primary parametric equivalent, offering identical electrical specifications and 14-TSSOP package format. This part is suitable for applications requiring exact functional compatibility with the LM339PWR. Both parts maintain active production status and ROHS3 compliance.

For Extended Temperature Range Applications: LM239APT, LM239PT, and LM2901PT support operating temperatures from -40°C to 105°C or -40°C to 125°C, compared to the LM339PWR's 0°C to 70°C range. These parts are appropriate for industrial and automotive environments requiring wider temperature operation. All three maintain 14-TSSOP package compatibility and ROHS3 compliance.

For Enhanced Supply Voltage Range: AS339GTR-G1, BA2901SFV-E2, and LM239DTBR2G support supply voltages up to 36V (single supply) or ±18V (dual supply), exceeding the LM339PWR's 30V / ±15V limits. These parts are suitable for high-voltage analog signal processing applications. All maintain ROHS3 compliance and active production status.

For Alternative Package Formats: LM339D and LM2901AS14-13 provide 14-SOIC package alternatives to the 14-TSSOP format. These parts are appropriate when PCB layout or assembly equipment constraints require SOIC packaging. Both maintain functional equivalence and ROHS3 compliance.

Avoid LM339PWRG4: This part carries obsolete product status and should not be selected for new designs, despite parametric equivalence to the LM339PWR.

Frequently Asked Questions (FAQ)

Q: Can LM339PWRG3 be used as a direct replacement for LM339PWR? A: Yes. LM339PWRG3 is a parametric equivalent with identical electrical specifications, output type, and 14-TSSOP package. The only difference is packaging method (tape & reel versus cut tape). No circuit modifications are required.

Q: What is the primary difference between LM339PWR and LM239APT? A: LM239APT offers superior input offset voltage (2mV versus 5mV) and lower input bias current (0.1µA versus 0.25µA). Additionally, LM239APT supports extended operating temperature range (-40°C to 105°C versus 0°C to 70°C). Both use 14-TSSOP packages and are ROHS3 compliant.

Q: Are 14-TSSOP and 14-SOIC packages interchangeable? A: No. While both are 14-pin surface-mount packages, they have different physical dimensions and pin spacing. 14-TSSOP (0.173" width) and 14-SOIC (0.154" width) require different PCB footprints. Substitution between these packages requires PCB redesign.

Q: Which substitute part supports the widest operating temperature range? A: LM2901PT and LM2901AS14-13 both support -40°C to 125°C operating temperature, providing the widest range among available substitutes. LM2901PT maintains 14-TSSOP package compatibility with LM339PWR.

Q: Can I use BA2901SFV-E2 in place of LM339PWR? A: BA2901SFV-E2 is functionally compatible but uses a 14-LSSOP package instead of 14-TSSOP, requiring PCB redesign. It offers extended temperature range (-40°C to 105°C) and higher supply voltage capability (36V single supply). Electrical performance is equivalent within specified tolerances.

Q: What does "open-collector output" mean for comparator selection? A: Open-collector output allows the comparator output to sink current to ground when active, requiring an external pull-up resistor to establish a high logic level. This configuration is suitable for applications requiring wired-OR logic or interfacing with different logic voltage levels. All listed substitutes maintain open-collector or compatible output types.

Q: Is LM339PWRG4 suitable for new designs? A: No. LM339PWRG4 carries obsolete product status. For new designs, select LM339PWRG3 (active, parametric equivalent) or alternative active-status parts based on specific application requirements.

Q: How do I determine if a substitute part is compatible with my application? A: Verify that the substitute part meets or exceeds your application's requirements for: (1) supply voltage range, (2) operating temperature range, (3) input offset voltage and bias current specifications, (4) output current capability, and (5) package format compatibility with your PCB design. Cross-reference the parameter comparison table to confirm compatibility.

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