LP339DRE4 Equivalent & Substitute Parts

Part Overview

The LP339DRE4 is a general-purpose quad comparator IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This device integrates four independent voltage comparators with CMOS, MOS, and open-collector output stages, designed for analog signal comparison applications across industrial and consumer electronics.

The LP339DRE4 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance of systems utilizing this comparator.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LP339DRE4
Package Type	14-SOIC (0.154", 3.90mm Width)
Number of Comparators	4
Output Type	CMOS, MOS, Open-Collector
Supply Voltage Range	3V ~ 30V (Single), ±1.5V ~ 15V (Dual)
Input Offset Voltage (Max)	5mV @ 30V
Input Bias Current (Max)	0.025µA @ 5V
Output Current (Typ)	30mA @ 5V
Quiescent Current (Max)	100µA
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the LP339DRE4 are categorized based on the following substitution criteria:

Primary Substitution Parameters:

Package compatibility: 14-SOIC surface mount form factor
Functional equivalence: Four independent comparators
Output stage type: CMOS, MOS, or open-collector configurations
Supply voltage range: Minimum 3V ~ 30V single supply or ±1.5V ~ 15V dual supply
Input offset voltage: Maximum 5mV specification
Input bias current: Maximum 0.025µA specification
Output current capability: Minimum 30mA @ 5V

Substitution Categories:

Direct Manufacturer Equivalents (Texas Instruments LP339 Series): Parts sharing identical base product number LP339 with matching electrical specifications and 14-SOIC packaging. These include LP339M/NOPB and LP339MX/NOPB, which maintain parametric compatibility with enhanced supply voltage range (2V ~ 36V).
Manufacturer Recommended Alternatives (Texas Instruments LM339 Series): LM339M/NOPB and LM339ADT represent Texas Instruments' recommended migration path. These parts maintain four-comparator architecture and 14-SOIC packaging with compatible supply ranges, though output type is open-collector only.
Extended Temperature Range Variants (Texas Instruments LMV339 Series): LMV339M/NOPB provides CMOS and TTL output options with restricted supply voltage (2.7V ~ 5.5V) and extended operating temperature (-40°C ~ 85°C), suitable for applications requiring wider temperature operation.
Cross-Manufacturer Equivalents (STMicroelectronics & Rohm): LM139ADT, LM139DT, LM2901HYDT (STMicroelectronics) and BA2901SF-E2 (Rohm Semiconductor) provide functional equivalence with four comparators in compatible packaging. These parts meet or exceed the electrical specifications of the LP339DRE4 while offering active product status and extended temperature ranges.

Parameter Comparison

Part Number	Manufacturer	Package	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Product Status
LP339DRE4	Texas Instruments	14-SOIC	3V~30V / ±1.5V~15V	5mV @ 30V	0.025µA @ 5V	30mA @ 5V	100µA	0°C ~ 70°C	Obsolete
LP339M/NOPB	Texas Instruments	14-SOIC	2V~36V / ±1V~18V	5mV @ 5V	0.025µA @ 5V	10mA @ 5V	100µA	0°C ~ 70°C	Active
LP339MX/NOPB	Texas Instruments	14-SOIC	2V~36V / ±1V~18V	5mV @ 5V	0.025µA @ 5V	10mA @ 5V	100µA	0°C ~ 70°C	Active
LM339M/NOPB	Texas Instruments	14-SOIC	2V~36V / ±1V~18V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	Active
LMV339M/NOPB	Texas Instruments	14-SOIC	2.7V~5.5V	7mV @ 5V	0.25µA @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	Active
LP339DR	Texas Instruments	14-SOIC	3V~30V / ±1.5V~15V	5mV @ 30V	0.025µA @ 5V	30mA @ 5V	100µA	0°C ~ 70°C	Active
BA2901SF-E2	Rohm Semiconductor	14-SOP	2V~36V / ±1V~18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	Active
LM139ADT	STMicroelectronics	14-SOIC	2V~32V / ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-55°C ~ 125°C	Active
LM139DT	STMicroelectronics	14-SOIC	2V~32V / ±1V~16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-55°C ~ 125°C	Active
LM2901HYDT	STMicroelectronics	14-SOIC	2V~36V / ±1V~18V	—	—	—	2.5mA	—	Active
LM339ADT	STMicroelectronics	14-SOIC	2V~32V / ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	Active

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Highest Compatibility):

LP339DR represents the optimal direct replacement. This part maintains identical electrical specifications to the LP339DRE4 (3V ~ 30V supply, 5mV input offset, 0.025µA input bias, 30mA output current) while offering active product status and improved supply availability. The LP339DR is packaged in 14-SOIC surface mount format with ROHS3 compliance and unlimited moisture sensitivity rating.

Tier 2 - Texas Instruments Alternatives (Same Manufacturer):

LP339M/NOPB and LP339MX/NOPB provide enhanced supply voltage range (2V ~ 36V) with maintained input offset and bias specifications. These parts are active products with higher inventory levels. Trade-off: reduced output current (10mA vs. 30mA) requires circuit evaluation for applications demanding higher drive capability.

LM339M/NOPB offers manufacturer-recommended migration with active status and extended supply range. Trade-offs include higher input bias current (0.25µA vs. 0.025µA) and reduced quiescent current (2.5mA vs. 100µA), suitable for low-power applications.

Tier 3 - Cross-Manufacturer Alternatives (Extended Capabilities):

LM139ADT and LM139DT (STMicroelectronics) provide extended operating temperature range (-55°C ~ 125°C) with active product status and high inventory availability. These parts meet or exceed input offset specifications and maintain 14-SOIC packaging. Suitable for industrial and automotive temperature environments.

BA2901SF-E2 (Rohm Semiconductor) offers extended temperature operation (-40°C ~ 105°C) with active status and high inventory. Package variant is 14-SOP (0.173" width) versus 14-SOIC (0.154" width), requiring PCB layout verification for pin-to-pin compatibility.

Tier 4 - Specialized Applications:

LMV339M/NOPB addresses applications requiring extended temperature range (-40°C ~ 85°C) with restricted supply voltage (2.7V ~ 5.5V). Higher output current (84mA) and TTL/CMOS output options support logic-level interfacing.

LM2901HYDT (STMicroelectronics) carries AEC-Q100 automotive qualification with Tier 3 moisture sensitivity rating, suitable for automotive-grade applications requiring extended supply range (2V ~ 36V).

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the LP339DRE4 regulatory requirements. Moisture sensitivity levels range from 1 (unlimited) to 3 (168 hours), affecting storage and handling protocols.

Frequently Asked Questions (FAQ)

Q: Can LP339M/NOPB directly replace LP339DRE4 in existing designs?

A: LP339M/NOPB is functionally compatible with identical input offset voltage (5mV) and input bias current (0.025µA) specifications. However, output current is reduced from 30mA to 10mA. Circuit designs relying on the full 30mA output drive capability require evaluation. The enhanced supply voltage range (2V ~ 36V vs. 3V ~ 30V) provides broader operational flexibility.

Q: What is the difference between LP339DR and LP339DRE4?

A: LP339DR and LP339DRE4 share identical electrical specifications and 14-SOIC packaging. The primary difference is product status: LP339DRE4 is obsolete while LP339DR is active. LP339DR is the direct replacement maintaining all parametric equivalence with improved supply availability.

Q: Are STMicroelectronics LM139 series parts pin-compatible with LP339DRE4?

A: Yes, LM139ADT and LM139DT maintain 14-SOIC packaging with identical pin configuration. Electrical specifications are compatible within design tolerances. LM139ADT offers superior input offset voltage (2mV vs. 5mV) and extended temperature range (-55°C ~ 125°C), making it suitable for precision and industrial applications.

Q: What packaging differences exist between BA2901SF-E2 and LP339DRE4?

A: BA2901SF-E2 uses 14-SOP packaging (0.173" width) versus LP339DRE4's 14-SOIC (0.154" width). While pin count and function are equivalent, the wider package footprint requires PCB layout verification. Pin spacing and lead geometry differ, necessitating design review before implementation.

Q: Which substitute part offers the lowest quiescent current?

A: BA2901SF-E2 and LM139DT both specify 2mA quiescent current, compared to LP339DRE4's 100µA. LM2901HYDT and LM339M/NOPB specify 2.5mA. For ultra-low-power applications, LP339M/NOPB and LP339MX/NOPB maintain the original 100µA specification.

Q: Is LMV339M/NOPB suitable for 3.3V single-supply applications?

A: LMV339M/NOPB operates within 2.7V ~ 5.5V supply range, making it compatible with 3.3V single-supply systems. However, the restricted voltage range compared to LP339DRE4 (3V ~ 30V) limits dual-supply flexibility. Input offset voltage increases to 7mV, and quiescent current rises to 300µA. Evaluate application requirements before selection.

Q: What is the significance of AEC-Q100 qualification on LM2901HYDT?

A: AEC-Q100 qualification indicates automotive-grade reliability testing and qualification. LM2901HYDT is suitable for automotive applications requiring extended supply range (2V ~ 36V) and automotive-level component screening. Moisture sensitivity level 3 (168 hours) requires controlled storage conditions compared to level 1 (unlimited) on most alternatives.

Q: Can I use LMV339M/NOPB in place of LP339DRE4 for general-purpose applications?

A: LMV339M/NOPB is functionally equivalent for general-purpose comparator applications within its 2.7V ~ 5.5V supply range. The restricted voltage range eliminates dual-supply operation and high-voltage single-supply capability. Extended temperature range (-40°C ~ 85°C) and higher output current (84mA) provide advantages for specific applications. Circuit voltage requirements must be evaluated.

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