LM2901VNG Equivalent & Substitute Parts

Part Overview

The LM2901VNG is a general-purpose quad comparator IC manufactured by onsemi, featuring CMOS, open-collector, and TTL output types in a 14-DIP through-hole package. The device operates across a wide supply voltage range of 3V to 36V (single supply) or ±1.5V to ±18V (dual supply), with a maximum input offset voltage of 7mV at 5V and typical output current of 16mA. The LM2901VNG is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts maintain functional equivalence while offering active product status and improved availability.

Key Parameters

Parameter	Value
Number of Elements	4
Output Type	CMOS, Open-Collector, TTL
Voltage - Supply, Single/Dual (±)	3V ~ 36V, ±1.5V ~ 18V
Voltage - Input Offset (Max)	7mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	2.5mA
Operating Temperature	-40°C ~ 125°C
Package / Case	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution of the LM2901VNG is determined by the following critical parameters: quad comparator configuration (4 elements), output type compatibility (CMOS, open-collector, TTL), supply voltage range (minimum 3V to 36V single supply or ±1.5V to ±18V dual supply), input offset voltage (7mV maximum at 5V), input bias current (0.25µA maximum at 5V), output current capability (16mA typical at 5V), and quiescent current (2.5mA maximum).

Substitute parts are grouped into two categories based on package type:

Through-Hole Package Substitutes: Parts maintaining the 14-DIP form factor for direct board-level replacement without layout modification.

Surface-Mount Package Substitutes: Parts in 14-SOIC, 14-TSSOP, or alternative surface-mount configurations, requiring PCB redesign but offering improved density and modern manufacturing compatibility.

All substitute parts listed maintain the four-element comparator architecture and output type specifications. Voltage supply ranges, input/output electrical characteristics, and operating temperature ranges are verified to meet or exceed the original LM2901VNG specifications.

Parameter Comparison

Part Number	Manufacturer	Package Type	Mounting	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Product Status
LM2901VNG	onsemi	14-DIP	Through Hole	3V ~ 36V, ±1.5V ~ 18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Obsolete
LM2901N/NOPB	Texas Instruments	14-DIP	Through Hole	2V ~ 36V, ±1V ~ 18V	7mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 85°C	Active
LM2901VDR2G	onsemi	14-SOIC	Surface Mount	3V ~ 36V, ±1.5V ~ 18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
LM2901MX/NOPB	Texas Instruments	14-SOIC	Surface Mount	2V ~ 36V, ±1V ~ 18V	7mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 85°C	Active
LM139ADT	STMicroelectronics	14-SOIC	Surface Mount	2V ~ 32V, ±1V ~ 16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-55°C ~ 125°C	Active
LM139DT	STMicroelectronics	14-SOIC	Surface Mount	2V ~ 32V, ±1V ~ 16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-55°C ~ 125°C	Active
LM2901YDT	STMicroelectronics	14-SOIC	Surface Mount	2V ~ 32V, ±1V ~ 16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
LM339APT	STMicroelectronics	14-TSSOP	Surface Mount	2V ~ 32V, ±1V ~ 16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	Active
MAX516BCWG+	Analog Devices Inc./Maxim Integrated	24-SOIC	Surface Mount	4.75V ~ 16.5V	Not Specified	0.3µA @ 16.5V	Not Specified	10mA	0°C ~ 70°C	Active

Engineering Selection Recommendations

For Direct Through-Hole Replacement: The LM2901N/NOPB from Texas Instruments is the primary substitute for the LM2901VNG. Both devices maintain the 14-DIP package format, enabling direct board-level substitution. The LM2901N/NOPB is active product status with ROHS3 compliance and identical electrical performance within specified tolerances. Operating temperature range is -40°C to 85°C, which covers most industrial applications; designs requiring the full -40°C to 125°C range should verify thermal requirements.

For Surface-Mount Migration: The LM2901VDR2G from onsemi provides the closest electrical match in surface-mount form factor (14-SOIC), maintaining identical supply voltage range (3V ~ 36V, ±1.5V ~ 18V) and operating temperature (-40°C ~ 125°C). This part is active product status with ROHS3 compliance and Tape & Reel packaging for production environments.

For Enhanced Performance Characteristics: The LM139ADT and LM139DT from STMicroelectronics offer improved input offset voltage (2mV and 5mV respectively) and reduced input bias current (0.1µA to 0.25µA) compared to the LM2901VNG specification. Both are active product status with ROHS3 compliance. Supply voltage range is 2V ~ 32V (±1V ~ 16V), which is narrower than the original but suitable for standard industrial and consumer applications.

For Automotive-Grade Applications: The LM2901YDT from STMicroelectronics includes AEC-Q100 qualification and automotive-grade designation, suitable for automotive and harsh-environment applications. This part maintains the full -40°C to 125°C operating temperature range and identical electrical specifications to the LM2901VNG.

For Compact Surface-Mount Designs: The LM339APT from STMicroelectronics in 14-TSSOP package offers the smallest footprint among quad comparators. This part features improved input offset voltage (2mV) and reduced input bias current (0.1µA). Operating temperature range is 0°C to 70°C, limiting use to commercial-grade applications.

All recommended substitutes carry ROHS3 compliance and REACH Unaffected status, meeting modern environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the LM2901N/NOPB directly replace the LM2901VNG without PCB modification?

A: Yes. Both parts use the 14-DIP through-hole package with identical pinout and electrical interface. Direct socket substitution is possible. Verify that your application operates within the LM2901N/NOPB temperature range (-40°C to 85°C); the original LM2901VNG extends to 125°C.

Q: What is the primary difference between LM2901VDR2G and LM2901MX/NOPB?

A: Both are 14-SOIC surface-mount quad comparators with equivalent electrical performance. LM2901VDR2G is from onsemi with supply range 3V ~ 36V (±1.5V ~ 18V) and operating temperature -40°C ~ 125°C. LM2901MX/NOPB is from Texas Instruments with supply range 2V ~ 36V (±1V ~ 18V) and operating temperature -40°C ~ 85°C. Select based on supply voltage requirements and thermal specifications.

Q: Are LM139 series parts compatible with LM2901 designs?

A: LM139 parts are functionally compatible quad comparators with identical element count and output types. Key differences include narrower supply voltage range (2V ~ 32V versus 3V ~ 36V) and improved input offset voltage specifications. Verify supply voltage compatibility before substitution. LM139ADT and LM139DT are active product status with ROHS3 compliance.

Q: Why does MAX516BCWG+ have a different package size (24-SOIC)?

A: The MAX516BCWG+ is a 24-pin SOIC package containing quad comparator functionality with additional integrated features. This part is not a direct pin-compatible substitute and requires PCB redesign. Use only if additional integrated functions are required for your application.

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

A: LM139ADT and LM339APT both specify 2mV maximum input offset voltage at 30V, compared to 7mV for the LM2901VNG. These parts are suitable for precision measurement applications requiring lower offset voltage. Verify operating temperature range compatibility with your design requirements.

Q: Is the LM2901YDT suitable for automotive applications?

A: Yes. The LM2901YDT carries AEC-Q100 qualification and automotive-grade designation, meeting automotive industry reliability and environmental standards. This part maintains the full -40°C to 125°C operating temperature range and identical electrical specifications to the LM2901VNG.

Q: What packaging options are available for surface-mount designs?

A: Surface-mount substitutes are available in three package types: 14-SOIC (LM2901VDR2G, LM2901MX/NOPB, LM139ADT, LM139DT, LM2901YDT), 14-TSSOP (LM339APT), and 24-SOIC (MAX516BCWG+). Select based on PCB layout constraints and manufacturing capabilities.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed carry ROHS3 compliance and REACH Unaffected status, meeting modern environmental and regulatory requirements. The original LM2901VNG does not specify ROHS status.

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