LM339APW Equivalent & Substitute Parts

Part Overview

The LM339APW is a general-purpose comparator IC manufactured by Texas Instruments, featuring four independent differential comparators in a 14-TSSOP surface-mount package. This device operates across a wide supply voltage range (2V to 30V single supply, ±1V to ±15V dual supply) and is designed for open-collector output applications. The LM339APW is currently in Last Time Buy status, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Number of Elements	4
Output Type	Open-Collector
Voltage Supply Range (Single/Dual)	2V ~ 30V / ±1V ~ 15V
Input Offset Voltage (Max)	3mV @ 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

Substitute Part Grouping Explanation

Substitution eligibility for the LM339APW is determined by the following critical parameters:

Number of Elements: Must be 4 independent comparators
Output Type: Must support open-collector configuration
Supply Voltage Range: Must encompass or exceed 2V ~ 30V (single) and ±1V ~ ±15V (dual)
Package Type: 14-TSSOP preferred for direct pin compatibility; 14-SOIC and 14-LSSOP acceptable with PCB layout verification
Input Offset Voltage: Lower values indicate better performance; maximum acceptable determined by application requirements
Input Bias Current: Must not exceed application-specific limits
Output Current: Minimum 16mA required for most applications
Operating Temperature Range: Application-dependent; extended range (−40°C to 125°C) provides broader operational capability
Compliance: ROHS3 compliance required; MSL rating and REACH status must match or exceed original specification

Substitute parts are grouped into two categories: direct replacements (identical package and pinout) and functional equivalents (different package requiring layout modification).

Parameter Comparison

Part Number	Manufacturer	Package	Supply Voltage	Input Offset (Max)	Output Current (Typ)	Operating Temp	Product Status
LM339APW	Texas Instruments	14-TSSOP	2V~30V / ±1V~15V	3mV @ 30V	20mA	0°C ~ 70°C	Last Time Buy
LM339APWR	Texas Instruments	14-TSSOP	2V~30V / ±1V~15V	3mV @ 30V	20mA	0°C ~ 70°C	Active
LM239APT	STMicroelectronics	14-TSSOP	2V~32V / ±1V~16V	2mV @ 30V	16mA @ 5V	−40°C ~ 105°C	Active
LM239PT	STMicroelectronics	14-TSSOP	2V~32V / ±1V~16V	5mV @ 30V	16mA @ 5V	−40°C ~ 105°C	Active
LM2901PT	STMicroelectronics	14-TSSOP	2V~32V / ±1V~16V	7mV @ 5V	16mA @ 5V	−40°C ~ 125°C	Active
LM2901YPT	STMicroelectronics	14-TSSOP	2V~32V / ±1V~16V	7mV @ 5V	16mA @ 5V	−40°C ~ 125°C	Active
LM339APT	STMicroelectronics	14-TSSOP	2V~32V / ±1V~16V	2mV @ 30V	16mA @ 5V	0°C ~ 70°C	Active
BA2901SFV-E2	Rohm Semiconductor	14-LSSOP	2V~36V / ±1V~18V	7mV @ 5V	16mA @ 5V	−40°C ~ 105°C	Active
LM2901AS14-13	Diodes Incorporated	14-SOIC	2V~36V / ±1V~18V	2mV @ 5V	16mA @ 5V	−40°C ~ 125°C	Active
LM2901AT14-13	Diodes Incorporated	14-TSSOP	2V~36V / ±1V~18V	2mV @ 5V	16mA @ 5V	−40°C ~ 125°C	Active
LM2901QS14-13	Diodes Incorporated	14-SOIC	2V~36V / ±1V~18V	7mV @ 5V	16mA @ 5V	−40°C ~ 125°C	Active

Engineering Selection Recommendations

Tier 1 – Direct Replacement (Identical Package, Pin-Compatible)

LM339APWR (Texas Instruments) is the primary direct replacement. It maintains identical electrical specifications and 14-TSSOP packaging with Active product status, ensuring long-term availability and supply continuity.

Tier 2 – Package-Compatible Substitutes (14-TSSOP)

LM239APT and LM339APT (STMicroelectronics) provide 14-TSSOP compatibility with enhanced specifications. LM239APT offers superior input offset voltage (2mV) and extended operating temperature range (−40°C to 105°C). LM339APT matches the original operating temperature range (0°C to 70°C) while improving input offset performance.

LM2901PT and LM2901YPT (STMicroelectronics) extend operating temperature to −40°C to 125°C, with LM2901YPT carrying AEC-Q100 automotive qualification. Both maintain 14-TSSOP packaging and supply voltage compatibility.

LM2901AT14-13 (Diodes Incorporated) offers 14-TSSOP packaging with extended temperature range (−40°C to 125°C) and superior input offset voltage (2mV @ 5V).

Tier 3 – Alternative Packages (Functional Equivalents)

BA2901SFV-E2 (Rohm Semiconductor) uses 14-LSSOP packaging with expanded supply voltage range (2V to 36V / ±1V to ±18V) and extended temperature operation (−40°C to 105°C). PCB layout modification required.

LM2901AS14-13 and LM2901QS14-13 (Diodes Incorporated) employ 14-SOIC packaging with extended temperature range (−40°C to 125°C). LM2901QS14-13 carries AEC-Q100 automotive qualification. PCB layout modification required.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original LM339APW specification.

Frequently Asked Questions (FAQ)

Q: Can LM339APWR be used as a direct drop-in replacement for LM339APW?

A: Yes. LM339APWR is electrically and mechanically identical to LM339APW, with identical 14-TSSOP packaging, pinout, and electrical specifications. The primary difference is product status (Active vs. Last Time Buy) and packaging format (Cut Tape & Digi-Reel vs. Tube). No circuit modifications are required.

Q: What is the key difference between LM239APT and LM339APT?

A: Both are STMicroelectronics parts in 14-TSSOP packaging. LM239APT features superior input offset voltage (2mV @ 30V) and extended operating temperature (−40°C to 105°C). LM339APT maintains the original operating temperature range (0°C to 70°C) with identical input offset performance (2mV @ 30V). Selection depends on application temperature requirements.

Q: Can I use BA2901SFV-E2 or LM2901AS14-13 as substitutes?

A: These parts are functionally equivalent but require PCB layout modification. BA2901SFV-E2 uses 14-LSSOP packaging; LM2901AS14-13 uses 14-SOIC packaging. Both differ from the original 14-TSSOP footprint. Electrical specifications are compatible, but physical placement and routing must be re-evaluated. Use only if PCB redesign is feasible.

Q: What does AEC-Q100 qualification mean for LM2901YPT and LM2901QS14-13?

A: AEC-Q100 qualification indicates these parts meet automotive-grade reliability standards established by the Automotive Electronics Council. These parts are suitable for automotive applications requiring enhanced quality assurance and extended temperature operation (−40°C to 125°C). Non-automotive applications may use these parts without restriction.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original LM339APW.

Q: Which substitute offers the best input offset voltage performance?

A: LM239APT and LM339APT (STMicroelectronics) and LM2901AS14-13 (Diodes Incorporated) all specify 2mV maximum input offset voltage, superior to the original LM339APW specification of 3mV @ 30V. Selection should be based on package compatibility and operating temperature requirements.

Q: What is the difference between Cut Tape & Digi-Reel and Tube packaging?

A: Tube packaging (original LM339APW) is used for lower-volume orders and manual handling. Cut Tape & Digi-Reel packaging (LM339APWR) is optimized for automated assembly and higher-volume production. Electrical specifications are identical; packaging format affects procurement and assembly processes only.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message