LM239PWRE4 Equivalent & Substitute Parts

Part Overview

The LM239PWRE4 is a general-purpose quad comparator IC manufactured by Texas Instruments in 14-TSSOP surface-mount packaging. This device features open-collector outputs and operates across a wide supply voltage range of 2V to 30V (single supply) or ±1V to ±15V (dual supply). The LM239PWRE4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM239PWRE4
Manufacturer	Texas Instruments
Category	Linear Comparator
Type	General Purpose
Number of Elements	4
Output Type	Open-Collector
Voltage Supply (Single/Dual)	2V ~ 30V / ±1V ~ 15V
Voltage - Input Offset (Max)	5mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	2mA
Operating Temperature	-25°C ~ 85°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LM239PWRE4 is determined by the following critical parameters:

Primary Substitution Criteria:

Number of comparator elements: 4
Output type: Open-Collector
Package type: 14-TSSOP surface mount
Supply voltage range compatibility: Minimum 2V single supply or ±1V dual supply
Input offset voltage: Maximum 5mV @ 30V or equivalent
Input bias current: Maximum 0.25µA @ 5V or equivalent
Output current capability: Minimum 16mA typical
Quiescent current: Maximum 2.5mA
Operating temperature range: Minimum -25°C to 85°C

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications and packaging) and manufacturer-recommended alternatives (functionally compatible with minor specification variations within acceptable engineering tolerances).

Parameter Comparison

Part Number	Manufacturer	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent (Max)	Temp Range	Package	Status
LM239PWRE4	Texas Instruments	2V~30V / ±1V~15V	5mV @ 30V	0.25µA @ 5V	20mA	2mA	-25°C ~ 85°C	14-TSSOP	Discontinued
LM239PWR	Texas Instruments	2V~30V / ±1V~15V	5mV @ 30V	0.25µA @ 5V	20mA	2mA	-25°C ~ 85°C	14-TSSOP	Active
LM239APT	STMicroelectronics	2V~32V / ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP	Active
LM239DTBR2G	onsemi	3V~36V / ±1.5V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-25°C ~ 85°C	14-TSSOP	Active
LM239PT	STMicroelectronics	2V~32V / ±1V~16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-TSSOP	Active
LM2901PT	STMicroelectronics	2V~32V / ±1V~16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	Active
LM2901YPT	STMicroelectronics	2V~32V / ±1V~16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	14-TSSOP	Active
BA2901SFV-E2	Rohm Semiconductor	2V~36V / ±1V~18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	14-LSSOP	Active
LM339APT	STMicroelectronics	2V~32V / ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP	Active
LM339PT	STMicroelectronics	2V~32V / ±1V~16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	14-TSSOP	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: LM239PWR (Texas Instruments) is the direct parametric equivalent to LM239PWRE4, differing only in packaging format (Cut Tape & Digi-Reel versus Tape & Reel). Both maintain identical electrical specifications and operating characteristics. This part is currently active with high inventory availability.

Primary Manufacturer-Recommended Substitutes: LM239PT and LM239APT (STMicroelectronics) are functionally compatible alternatives. Both are active products with extended operating temperature ranges (-40°C to 105°C) compared to the original part. LM239APT offers superior input offset voltage (2mV maximum) and lower input bias current (0.1µA maximum), making it suitable for precision applications.

Extended Supply Voltage Range Alternative: LM239DTBR2G (onsemi) supports an extended supply voltage range (3V to 36V single supply, ±1.5V to ±18V dual supply) while maintaining the same package and core electrical characteristics. This part is suitable for applications requiring higher supply voltage tolerance.

Automotive-Grade Option: LM2901YPT (STMicroelectronics) is an automotive-qualified variant (AEC-Q100) with extended temperature range (-40°C to 125°C). This part is appropriate for automotive and industrial applications requiring temperature stability beyond standard commercial grades.

Cross-Manufacturer Alternative: BA2901SFV-E2 (Rohm Semiconductor) provides functional equivalence with extended supply voltage range (2V to 36V single supply, ±1V to ±18V dual supply) and operating temperature range (-40°C to 105°C). Package designation is 14-LSSOP, which is mechanically compatible with 14-TSSOP footprints.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can LM239PWR be used as a direct replacement for LM239PWRE4? A: Yes. LM239PWR is the parametric equivalent with identical electrical specifications. The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel). Both are 14-TSSOP surface-mount packages with identical pinouts and performance characteristics.

Q: What is the difference between LM239 and LM2901 series comparators? A: Both are quad general-purpose comparators with open-collector outputs in 14-TSSOP packaging. The LM2901 series offers extended temperature range (-40°C to 125°C) compared to standard LM239 variants. Electrical specifications are functionally equivalent within acceptable engineering tolerances.

Q: Is BA2901SFV-E2 compatible with LM239PWRE4 footprints? A: Yes. BA2901SFV-E2 uses 14-LSSOP packaging, which is mechanically compatible with 14-TSSOP footprints. Pin assignments are identical, allowing direct PCB substitution. Verify supply voltage and temperature requirements for your specific application.

Q: Why do some substitutes have different input offset voltage specifications? A: Input offset voltage varies by manufacturer process and grade. LM239APT and LM339APT offer 2mV maximum offset (superior precision), while standard variants specify 5mV to 7mV maximum. Selection depends on application precision requirements. Lower offset voltage is beneficial for precision analog circuits.

Q: Can LM339 series parts replace LM239 comparators? A: LM339 and LM239 are functionally equivalent quad comparators with identical pinouts and package types. However, LM339APT and LM339PT have restricted operating temperature ranges (0°C to 70°C) compared to LM239 variants. Use LM339 parts only when operating temperature requirements fall within 0°C to 70°C.

Q: What does AEC-Q100 qualification mean for LM2901YPT? A: AEC-Q100 is an automotive industry qualification standard. LM2901YPT meets automotive reliability and temperature cycling requirements, making it suitable for automotive and harsh industrial environments. Use this variant when automotive-grade reliability is specified.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, consistent with the original LM239PWRE4 specification.

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