LM239PWRG4 Equivalent & Substitute Parts

Part Overview

The LM239PWRG4 is a general-purpose quad comparator IC manufactured by Texas Instruments, housed in a 14-TSSOP surface-mount package. 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 part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	LM239PWRG4 Value
Manufacturer	Texas Instruments
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
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
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the LM239PWRG4 is determined by the following critical parameters:

Package compatibility: 14-TSSOP surface-mount package with 0.173" width and 4.40mm width specification
Functional equivalence: Quad comparator with 4 independent elements
Output configuration: Open-collector output type
Supply voltage range: Minimum 2V single supply or ±1V dual supply capability
Input offset voltage: Maximum 5mV specification at rated voltage
Input bias current: Maximum 0.25µA at 5V
Output current capability: Minimum 16mA typical output current
Quiescent current: Maximum 2.5mA
Operating temperature range: Support for -25°C to 85°C minimum
Compliance: ROHS3 compliant, REACH unaffected

Substitute parts are grouped into two categories: parametric equivalents from the same manufacturer (Texas Instruments) and manufacturer-recommended alternatives from other suppliers (STMicroelectronics, Rohm Semiconductor, onsemi, Diodes Incorporated) that meet or exceed the electrical specifications of the original part.

Parameter Comparison

Part Number	Manufacturer	Package	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent (Max)	Temp Range	Status
LM239PWRG4	Texas Instruments	14-TSSOP	2V~30V, ±1V~15V	5mV @ 30V	0.25µA @ 5V	20mA	2mA	-25°C ~ 85°C	Obsolete
LM239PWR	Texas Instruments	14-TSSOP	2V~30V, ±1V~15V	5mV @ 30V	0.25µA @ 5V	20mA	2mA	-25°C ~ 85°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
BA2901SFV-E2	Rohm Semiconductor	14-LSSOP	2V~36V, ±1V~18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	Active
LM2901AT14-13	Diodes Incorporated	14-TSSOP	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
LM2901YPT	STMicroelectronics	14-TSSOP	2V~32V, ±1V~16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
LM339APT	STMicroelectronics	14-TSSOP	2V~32V, ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	Active
LM339PT	STMicroelectronics	14-TSSOP	2V~32V, ±1V~16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	Active

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility)

LM239PWR from Texas Instruments is the direct parametric equivalent to LM239PWRG4. This part maintains identical electrical specifications and packaging, with the primary distinction being active product status and availability in higher quantities (68,435 units in stock versus 723 units for the obsolete variant).

Primary Alternatives (Full Specification Compliance)

LM239PT and LM239APT from STMicroelectronics are functionally equivalent with identical 14-TSSOP packaging. Both parts support the required supply voltage range and output current specifications. LM239APT offers improved input offset voltage (2mV versus 5mV) and lower input bias current (0.1µA versus 0.25µA), with extended operating temperature range to -40°C to 105°C. LM239PT maintains closer alignment to the original specifications with 5mV input offset voltage.

Extended Temperature Range Options

LM2901PT and LM2901YPT from STMicroelectronics provide extended operating temperature to -40°C to 125°C. LM2901YPT includes AEC-Q100 automotive qualification. LM2901AT14-13 from Diodes Incorporated offers the widest temperature range (-40°C to 125°C) with improved input offset voltage (2mV).

Alternative Package Consideration

BA2901SFV-E2 from Rohm Semiconductor uses 14-LSSOP packaging (functionally equivalent to 14-TSSOP) with extended supply voltage range to ±18V and operating temperature to -40°C to 105°C. This part is suitable for applications requiring higher voltage tolerance.

Compliance and Certification

All substitute parts maintain ROHS3 compliance and REACH unaffected status. LM2901YPT includes AEC-Q100 automotive qualification for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can LM239PWR directly replace LM239PWRG4 without circuit modifications?

A: Yes. LM239PWR is a parametric equivalent with identical electrical specifications and 14-TSSOP packaging. No circuit modifications are required.

Q: What is the difference between LM239 and LM2901 series parts?

A: Both are quad comparators with similar core functionality. The LM2901 series typically offers extended temperature ranges and may have slightly different electrical characteristics. Verify specific application requirements against the parameter comparison table.

Q: Is the BA2901SFV-E2 package compatible with LM239PWRG4 PCB layouts?

A: BA2901SFV-E2 uses 14-LSSOP packaging, which is mechanically compatible with 14-TSSOP footprints. However, verify pin-to-pin compatibility and thermal characteristics for your specific application.

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

A: LM239APT and LM2901AT14-13 both offer 2mV input offset voltage, compared to 5mV for the original LM239PWRG4. LM339APT also provides 2mV offset voltage.

Q: Are there temperature-limited alternatives?

A: LM339APT and LM339PT operate within 0°C to 70°C range, which is narrower than the original -25°C to 85°C specification. These parts are suitable only for applications within this temperature window.

Q: What is the MSL (Moisture Sensitivity Level) consideration for these parts?

A: Most substitute parts carry MSL 1 (unlimited moisture sensitivity), matching the original LM239PWRG4. LM2901AT14-13 carries MSL 3 (168 hours), requiring controlled storage conditions.

Q: Can I use LM2901YPT in automotive applications?

A: LM2901YPT includes AEC-Q100 automotive qualification, making it suitable for automotive-grade applications. Other parts lack this certification.

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