LM339PWRG4 Equivalent & Substitute Parts

Part Overview

The LM339PWRG4 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 a wide supply voltage range of 2V to 30V (single supply) or ±1V to ±15V (dual supply).

The LM339PWRG4 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and maintenance applications. Substitute parts must maintain functional compatibility through matching electrical parameters, package form factor, and output characteristics.

Key Parameters

Parameter	Value	Specification
Number of Elements	4	Quad comparator configuration
Output Type	Open-Collector	Allows external pull-up resistor configuration
Voltage Supply Range (Single/Dual)	2V ~ 30V / ±1V ~ 15V	Operating supply voltage limits
Input Offset Voltage (Max)	5mV @ 30V	Maximum input offset specification
Input Bias Current (Max)	0.25µA @ 5V	Maximum input bias current
Output Current (Typ)	20mA	Typical output current capability
Quiescent Current (Max)	2.5mA	Maximum supply current at no load
Operating Temperature	0°C ~ 70°C	Commercial temperature range
Package / Case	14-TSSOP (0.173", 4.40mm Width)	Surface-mount thin shrink small outline package
Mounting Type	Surface Mount	SMD assembly requirement
RoHS Status	ROHS3 Compliant	Lead-free and halogen-free compliance
Moisture Sensitivity Level	MSL 1 (Unlimited)	No moisture sensitivity restrictions

Substitute Part Grouping Explanation

Substitute parts for the LM339PWRG4 are classified based on the following substitution criteria:

Parametric Equivalents maintain identical electrical specifications and differ only in packaging format (Tape & Reel vs. Cut Tape) or product status (Active vs. Obsolete). These parts are direct functional replacements with no design modifications required.

Manufacturer Recommended Substitutes provide equivalent functionality with allowable variations in electrical parameters within acceptable engineering tolerances. These parts may have extended supply voltage ranges, improved input offset voltage specifications, or enhanced temperature operating ranges while maintaining the same package form factor and output type.

Direct Manufacturer Alternatives offer compatible functionality from different manufacturers with the same base product architecture (LM339 or LM2901 series). These parts maintain core electrical characteristics and package compatibility while potentially offering different output type configurations or extended operating temperature ranges.

The key parameters determining substitution validity are:

Number of elements (4 comparators)
Output type (Open-Collector primary; CMOS/DTL/ECL/MOS/TTL acceptable with verification)
Package form factor (14-TSSOP required for direct PCB compatibility)
Supply voltage range (minimum 2V ~ 30V single supply or ±1V ~ 15V dual supply)
Input bias current (0.25µA @ 5V or lower)
Quiescent current (2.5mA or lower)
Surface-mount configuration

Parameter Comparison

Part Number	Manufacturer	Product Status	Supply Voltage (Single/Dual)	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Package	Output Type
LM339PWRG4	Texas Instruments	Obsolete	2V~30V / ±1V~15V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-TSSOP	Open-Collector
LM339PWRG3	Texas Instruments	Active	2V~30V / ±1V~15V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	14-TSSOP	Open-Collector
LM339PWR	Rohm Semiconductor	Obsolete	2V~36V / ±1V~18V	7mV @ 5V	0.25µA @ 5V	—	2mA	0°C ~ 70°C	14-TSSOP	Open-Collector
LM339DTBR2G	onsemi	Active	3V~36V / ±1.5V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP	CMOS, Open-Collector, TTL
BA2901SFV-E2	Rohm Semiconductor	Active	2V~36V / ±1V~18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-LSSOP	Open-Collector
LM239APT	STMicroelectronics	Active	2V~32V / ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP	CMOS, DTL, ECL, MOS, Open-Collector, TTL
LM239PT	STMicroelectronics	Active	2V~32V / ±1V~16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP	CMOS, DTL, ECL, MOS, Open-Collector, TTL
LM2901AT14-13	Diodes Incorporated	Active	2V~36V / ±1V~18V	2mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	—
LM2901PT	STMicroelectronics	Active	2V~32V / ±1V~16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	CMOS, DTL, ECL, MOS, Open-Collector, TTL
LM2901YPT	STMicroelectronics	Active	2V~32V / ±1V~16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	CMOS, DTL, ECL, MOS, Open-Collector, TTL
LM339APT	STMicroelectronics	Active	2V~32V / ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP	CMOS, DTL, ECL, MOS, Open-Collector, TTL

Engineering Selection Recommendations

Primary Recommendation: LM339PWRG3

The LM339PWRG3 from Texas Instruments is the optimal substitute for the LM339PWRG4. This part maintains identical electrical specifications and package configuration while offering active product status. The only difference is packaging format (Tape & Reel vs. Cut Tape), which does not affect functional performance. This part is manufactured by the original equipment supplier and carries full ROHS3 compliance and MSL 1 rating.

Secondary Recommendations for Extended Temperature Range Applications:

For applications requiring extended operating temperature ranges beyond 0°C to 70°C, the following active parts provide enhanced thermal performance:

LM239PT and LM239APT (STMicroelectronics) operate across -40°C to 105°C with 14-TSSOP packaging. Both maintain open-collector output compatibility and ROHS3 compliance. LM239APT offers superior input offset voltage specification (2mV @ 30V) and reduced input bias current (0.1µA @ 5V).

LM2901PT and LM2901YPT (STMicroelectronics) extend operating range to -40°C to 125°C with automotive-grade qualification available (LM2901YPT). Both maintain 14-TSSOP packaging and ROHS3 compliance.

LM2901AT14-13 (Diodes Incorporated) provides -40°C to 125°C operation with extended supply voltage range (2V~36V / ±1V~18V) and improved input offset voltage (2mV @ 5V).

Alternative for Extended Supply Voltage Range:

LM339DTBR2G (onsemi) supports extended supply voltage range (3V~36V / ±1.5V~18V) with active product status and ROHS3 compliance. This part maintains 14-TSSOP packaging and open-collector output capability.

Compatibility Considerations:

BA2901SFV-E2 (Rohm Semiconductor) uses 14-LSSOP packaging, which differs from the 14-TSSOP standard. This package variation may require PCB layout modifications and is not recommended for direct drop-in replacement without design review.

All recommended substitutes maintain ROHS3 compliance and MSL 1 or MSL 3 ratings, ensuring compatibility with standard manufacturing processes and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can LM339PWRG3 be used as a direct replacement for LM339PWRG4?

A: Yes. The LM339PWRG3 is a parametric equivalent with identical electrical specifications and 14-TSSOP packaging. The only difference is packaging format (Tape & Reel vs. Cut Tape), which does not affect circuit performance. Both parts are manufactured by Texas Instruments and carry identical compliance certifications.

Q: What is the difference between LM339 and LM2901 series parts?

A: Both series are quad comparators with similar electrical characteristics and 14-TSSOP packaging. The LM2901 series typically offers extended operating temperature ranges (-40°C to 125°C vs. 0°C to 70°C) and may have different output type configurations. Electrical parameters such as input offset voltage, input bias current, and supply voltage ranges are comparable within acceptable engineering tolerances.

Q: Why does BA2901SFV-E2 use 14-LSSOP packaging instead of 14-TSSOP?

A: BA2901SFV-E2 uses 14-LSSOP (Leadless Small Outline Package) rather than 14-TSSOP (Thin Shrink Small Outline Package). While both are surface-mount packages with similar pin counts, the physical dimensions and PCB footprints differ. Direct substitution requires PCB layout verification and potential redesign of the component footprint.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance (lead-free and halogen-free). Moisture sensitivity levels range from MSL 1 (unlimited) to MSL 3 (168 hours), which are compatible with standard manufacturing and storage practices.

Q: What is the significance of input offset voltage differences between parts?

A: Input offset voltage determines the accuracy of analog signal comparison. The LM339PWRG4 specifies 5mV @ 30V. Substitute parts with lower input offset voltage (such as LM239APT and LM339APT at 2mV @ 30V) provide improved comparison accuracy. Parts with higher input offset voltage (such as LM339PWR at 7mV @ 5V) remain functionally compatible but with reduced precision in threshold detection.

Q: Can parts with extended supply voltage ranges (such as LM339DTBR2G at 3V~36V) replace the LM339PWRG4 (2V~30V)?

A: Extended supply voltage ranges provide additional design flexibility but do not prevent substitution. LM339DTBR2G supports the full operating range of LM339PWRG4 (2V~30V minimum requirement is met by 3V~36V range). However, applications operating below 3V single supply require verification of performance at the lower voltage threshold.

Q: What is the impact of different output current specifications?

A: Output current determines the maximum load-driving capability of the open-collector output. LM339PWRG4 specifies 20mA typical output current, while most substitutes specify 16mA @ 5V. This difference affects external pull-up resistor selection and maximum load impedance. Applications requiring 20mA output should verify that 16mA substitutes meet load requirements.

Q: Are automotive-grade parts (such as LM2901YPT) suitable for non-automotive applications?

A: Yes. Automotive-grade qualification (AEC-Q100) indicates enhanced reliability testing and extended operating temperature range. These parts are fully compatible with non-automotive applications and provide additional performance margin through extended temperature operation (-40°C to 125°C vs. 0°C to 70°C).

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