LM2901VN Equivalent & Substitute Parts

Part Overview

The LM2901VN is a quad comparator integrated circuit manufactured by onsemi, housed in a 14-pin DIP package. This device functions as a general-purpose comparator suitable for voltage comparison applications across single or dual supply configurations. The LM2901VN is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while accommodating modern packaging and compliance standards.

Key Parameters

Parameter	LM2901VN
Manufacturer	onsemi
Part Number	LM2901VN
Category	Linear - Comparator
Package Type	14-DIP
Number of Elements	4
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the LM2901VN is determined by the following criteria:

Functional Requirements:

Quad comparator configuration (4 independent comparators per package)
General-purpose comparator operation
Voltage supply range: 2V to 36V (single supply) or ±1V to ±18V (dual supply)
Input offset voltage and bias current specifications compatible with the original design

Packaging Considerations:

The original 14-DIP package is surface-mount or through-hole compatible depending on application
Substitute parts are available in 14-SOIC, 14-CDIP, 14-SO, 14-SOP, 14-TSSOP, and 16-QFN packages
Package selection depends on PCB layout requirements and manufacturing capabilities

Compliance & Status:

Modern substitutes are RoHS3 compliant, addressing environmental regulations
Active product status ensures long-term availability and supply chain stability
Automotive-grade variants (AEC-Q100) available for mission-critical applications

Parameter Comparison

Parameter	LM2901VN	LM2901M	LM2901MX/NOPB	LM2901HYDT	LM239J	CMP04FSZ	LM139DT	LM239QT	LM339APT	LM339DT	LM339MX
Manufacturer	onsemi	onsemi	Texas Instruments	STMicroelectronics	Texas Instruments	Analog Devices Inc.	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	onsemi
Product Status	Obsolete	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Obsolete
Number of Elements	4	4	4	4	4	4	4	4	4	4	4
Package / Case	14-DIP	14-SOIC	14-SOIC	14-SOIC	14-CDIP	14-SOIC	14-SOIC	16-VFQFN	14-TSSOP	14-SOIC	14-SOIC
Mounting Type	Through Hole	Surface Mount	Surface Mount	Surface Mount	Through Hole	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	3.3V ~ 36V, ±1.65V ~ 18V	2V ~ 32V, ±1V ~ 16V	2V ~ 36V, ±1V ~ 18V	2V ~ 32V, ±1V ~ 16V	2V ~ 32V, ±1V ~ 16V	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	Not specified	7mV @ 5V	7mV @ 30V	Not specified	5mV @ 30V	1mV @ 5V	5mV @ 30V	5mV	2mV @ 30V	5mV @ 30V	5mV @ 5V
Current - Input Bias (Max)	Not specified	0.25µA @ 5V	0.25µA @ 5V	Not specified	0.25µA @ 5V	0.1µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.1µA @ 5V	0.25µA @ 5V	0.25µA @ 5V
Current - Output (Typ)	Not specified	18mA @ 5V	16mA @ 5V	Not specified	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	18mA @ 5V
Current - Quiescent (Max)	Not specified	2.5mA	2.5mA	2.5mA	2.5mA	3mA	2mA	2mA	2.5mA	2.5mA	2.5mA
Operating Temperature	Not specified	-40°C ~ 85°C	-40°C ~ 85°C	Not specified	-25°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 125°C	-40°C ~ 105°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
RoHS Status	RoHS non-compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Active Production & New Designs:

Select from active-status parts with RoHS3 compliance: LM2901MX/NOPB, LM2901HYDT, LM239J, CMP04FSZ, LM139DT, LM239QT, LM339APT, or LM339DT. These parts ensure long-term supply availability and regulatory compliance.

For Surface-Mount Applications:

LM2901MX/NOPB (Texas Instruments, 14-SOIC) and LM339DT (STMicroelectronics, 14-SOIC) offer the highest inventory levels and active product status. Both maintain the 2V to 36V supply range and are RoHS3 compliant.

For Through-Hole Applications:

LM239J (Texas Instruments, 14-CDIP) is the direct through-hole equivalent, maintaining the original DIP-style package format while offering active product status and RoHS3 compliance.

For Automotive Applications:

LM2901HYDT (STMicroelectronics) carries AEC-Q100 qualification, suitable for automotive-grade requirements. Note the elevated moisture sensitivity level (MSL 3) requires controlled storage conditions.

For Compact PCB Layouts:

LM239QT (STMicroelectronics, 16-QFN) provides the smallest footprint among substitutes, though it requires surface-mount assembly capability.

Avoid Obsolete Alternatives:

LM2901M and LM339MX are obsolete and should not be selected for new designs despite lower cost, as they present supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can LM2901VN be directly replaced with LM2901MX/NOPB?

A: Functionally, yes. Both are quad comparators with identical electrical specifications (2V to 36V supply, 4 independent comparators). The primary difference is packaging: LM2901VN uses 14-DIP (through-hole), while LM2901MX/NOPB uses 14-SOIC (surface-mount). PCB layout modification is required.

Q: What is the difference between LM239J and LM2901MX/NOPB?

A: Both are quad comparators with compatible electrical specifications. LM239J uses 14-CDIP (through-hole), while LM2901MX/NOPB uses 14-SOIC (surface-mount). LM239J has a narrower operating temperature range (-25°C to 85°C) compared to LM2901MX/NOPB (-40°C to 85°C).

Q: Is CMP04FSZ a suitable replacement?

A: CMP04FSZ (Analog Devices Inc., 14-SOIC) is functionally compatible with slightly different electrical characteristics: input offset voltage of 1mV (lower than most alternatives) and supply range of 3.3V to 36V (minimum 3.3V versus 2V for others). Verify your application's minimum supply voltage requirement before selection.

Q: Why does LM2901HYDT have MSL 3 instead of MSL 1?

A: LM2901HYDT carries AEC-Q100 automotive qualification, which requires enhanced moisture sensitivity testing. MSL 3 (168 hours) mandates controlled storage and handling procedures. Standard industrial parts typically have MSL 1 (unlimited).

Q: Can I use LM339DT as a direct replacement?

A: LM339DT is functionally compatible but has a narrower supply range (2V to 32V versus 2V to 36V) and operating temperature range (0°C to 70°C versus -40°C to 85°C). Verify your application operates within these limits before substitution.

Q: What is the advantage of LM239QT over other substitutes?

A: LM239QT uses a 16-QFN package (3x3mm), providing the smallest footprint for space-constrained applications. It maintains the full 2V to 36V supply range and offers the widest operating temperature range (-40°C to 105°C). Trade-off: requires surface-mount assembly and fine-pitch soldering capability.

Q: Are all substitute parts RoHS3 compliant?

A: All active-status substitutes listed are RoHS3 compliant. Obsolete parts (LM2901M, LM339MX) do not specify RoHS status and should not be used in new designs subject to RoHS regulations.

Q: Which substitute has the best input offset voltage specification?

A: CMP04FSZ offers the lowest input offset voltage at 1mV @ 5V, followed by LM339APT at 2mV @ 30V. Standard alternatives range from 5mV to 7mV. Select based on your circuit's precision requirements.

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