LM2901M Equivalent & Substitute Parts

Part Overview

The LM2901M is a 4-channel general-purpose comparator manufactured by onsemi in 14-SOP surface-mount packaging. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs and production continuity. The LM2901M operates across a wide supply voltage range (2V to 36V single supply, ±1V to ±18V dual supply) and features open-collector, DTL, MOS, and TTL output configurations suitable for analog signal comparison applications.

Key Parameters

Parameter	LM2901M Specification
Manufacturer	onsemi
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Number of Elements	4
Output Type	DTL, MOS, Open-Collector, TTL
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	7mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	18mA @ 5V
Current - Quiescent (Max)	2.5mA
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LM2901M is determined by strict alignment of the following electrical and mechanical parameters:

Package compatibility: 14-SOIC (0.154", 3.90mm Width) surface-mount form factor
Functional equivalence: 4-channel general-purpose comparator topology
Supply voltage range: Minimum 2V to 36V single supply or ±1V to ±18V dual supply capability
Output type compatibility: Open-Collector output configuration (primary requirement for LM2901M applications)
Input offset voltage: Maximum 7mV @ 5V
Input bias current: Maximum 0.25µA @ 5V
Output current capability: Minimum 16mA typical @ 5V
Quiescent current: Maximum 2.5mA
Operating temperature range: Minimum -40°C to 85°C

Substitute parts are grouped into three categories: direct replacements (identical electrical and package specifications), similar alternatives (equivalent functionality with extended temperature or automotive qualification), and upgrade options (enhanced performance or compliance characteristics).

Parameter Comparison

Part Number	Manufacturer	Product Status	Package	Output Type	Supply Voltage	Input Offset (Max)	Output Current (Typ)	Temp Range	RoHS Status
LM2901M	onsemi	Obsolete	14-SOIC	DTL, MOS, Open-Collector, TTL	2V~36V, ±1V~18V	7mV @ 5V	18mA @ 5V	-40°C ~ 85°C	Not Specified
LM2901DR2G	onsemi	Active	14-SOIC	CMOS, Open-Collector, TTL	3V~36V, ±1.5V~18V	7mV @ 5V	16mA @ 5V	-40°C ~ 105°C	ROHS3 Compliant
LM2901VDR2G	onsemi	Active	14-SOIC	CMOS, Open-Collector, TTL	3V~36V, ±1.5V~18V	7mV @ 5V	16mA @ 5V	-40°C ~ 125°C	ROHS3 Compliant
NCV2901DR2G	onsemi	Active	14-SOIC	CMOS, Open-Collector, TTL	3V~36V, ±1.5V~18V	7mV @ 5V	16mA @ 5V	-40°C ~ 125°C	ROHS3 Compliant
LM2901D	STMicroelectronics	Active	14-SOIC	CMOS, DTL, ECL, MOS, Open-Collector, TTL	2V~32V, ±1V~16V	7mV @ 5V	16mA @ 5V	-40°C ~ 125°C	ROHS3 Compliant
LM2901QDRG4Q1	Texas Instruments	Last Time Buy	14-SOIC	Open-Collector	2V~36V, ±1V~18V	7mV @ 5V	20mA	-40°C ~ 125°C	ROHS3 Compliant
LM2901VQDRG4Q1	Texas Instruments	Last Time Buy	14-SOIC	Open-Collector	2V~36V, ±1V~18V	7mV @ 5V	20mA	-40°C ~ 125°C	ROHS3 Compliant
AS339AMTR-E1	Diodes Incorporated	Active	14-SOIC	Open-Collector	2V~36V, ±1V~18V	3mV @ 5V	16mA @ 5V	-40°C ~ 85°C	ROHS3 Compliant
AS339MTR-E1	Diodes Incorporated	Active	14-SOIC	Open-Collector	2V~36V, ±1V~18V	5mV @ 5V	16mA @ 5V	-40°C ~ 85°C	ROHS3 Compliant
BA2901SF-E2	Rohm Semiconductor	Active	14-SOIC	Open-Collector	2V~36V, ±1V~18V	7mV @ 5V	16mA @ 5V	-40°C ~ 105°C	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Minimum Risk): LM2901DR2G (onsemi) and LM2901D (STMicroelectronics) are the primary direct replacements. Both maintain the 14-SOIC package, 4-channel configuration, and open-collector output. LM2901DR2G is active with ROHS3 compliance. LM2901D extends the operating temperature to 125°C and is actively produced by STMicroelectronics.

Extended Temperature Alternative: LM2901VDR2G (onsemi) provides identical electrical specifications to LM2901DR2G with extended operating temperature range to 125°C and ROHS3 compliance, suitable for applications requiring higher thermal performance.

Automotive-Grade Option: NCV2901DR2G (onsemi) is the automotive-qualified variant with AEC-Q100 certification, operating to 125°C. This part is recommended for automotive and harsh-environment applications.

Last-Time-Buy Alternatives: LM2901QDRG4Q1 and LM2901VQDRG4Q1 (Texas Instruments) are classified as Last Time Buy with AEC-Q100 automotive qualification. These parts match the original supply voltage range and offer 20mA typical output current. Inventory availability is limited.

Cross-Manufacturer Alternatives: AS339AMTR-E1 and AS339MTR-E1 (Diodes Incorporated) and BA2901SF-E2 (Rohm Semiconductor) provide functional equivalence with identical package and supply voltage specifications. All are ROHS3 compliant and actively produced. AS339 variants feature lower input offset voltage (3mV to 5mV) compared to the 7mV specification of LM2901M.

Frequently Asked Questions (FAQ)

Q: Can LM2901DR2G directly replace LM2901M in existing designs? A: LM2901DR2G is electrically compatible with LM2901M. Both use 14-SOIC packaging and open-collector output. The primary difference is that LM2901DR2G specifies a minimum supply voltage of 3V (versus 2V for LM2901M) and extends operating temperature to 105°C. Verify that your application supply voltage meets the 3V minimum requirement.

Q: What is the difference between LM2901VDR2G and LM2901DR2G? A: Both parts are onsemi LM2901 variants in 14-SOIC packaging with identical electrical specifications. LM2901VDR2G extends the operating temperature range to 125°C, compared to 105°C for LM2901DR2G. Select LM2901VDR2G for applications requiring higher temperature operation.

Q: Is NCV2901DR2G suitable for automotive applications? A: Yes. NCV2901DR2G carries AEC-Q100 automotive qualification and is specifically designed for automotive-grade applications. It maintains the same electrical specifications as LM2901VDR2G with extended temperature operation to 125°C.

Q: How do AS339 parts compare to LM2901 variants? A: AS339AMTR-E1 and AS339MTR-E1 (Diodes Incorporated) are functionally equivalent 4-channel comparators in 14-SOIC packaging with identical supply voltage range (2V to 36V, ±1V to ±18V). The AS339 variants feature superior input offset voltage specifications (3mV to 5mV versus 7mV), making them suitable for precision applications. Both are ROHS3 compliant and actively produced.

Q: What is the significance of the packaging designation "Cut Tape (CT) & Digi-Reel®" versus "Tape & Reel (TR)"? A: Both packaging formats use identical 14-SOIC component packages. Cut Tape packaging is supplied in individual tape strips suitable for smaller volume orders, while Tape & Reel packaging is supplied on continuous reels for high-volume production. The electrical and mechanical specifications are identical; selection depends on procurement volume and handling requirements.

Q: Can I use LM2901D (STMicroelectronics) as a substitute? A: Yes. LM2901D is an active STMicroelectronics product in 14-SOIC packaging with identical electrical specifications to LM2901M. It supports the full 2V to 32V single supply range and extends operating temperature to 125°C. ROHS3 compliance is confirmed.

Q: Why do some substitutes specify lower minimum supply voltage (3V) instead of 2V? A: onsemi LM2901DR2G and LM2901VDR2G specify a 3V minimum supply voltage, whereas the original LM2901M and STMicroelectronics LM2901D support 2V minimum. If your application operates below 3V, use LM2901D (STMicroelectronics), LM2901QDRG4Q1, LM2901VQDRG4Q1 (Texas Instruments), or the Diodes/Rohm alternatives, all of which support 2V minimum supply.

Q: What is the difference between "Last Time Buy" and "Active" product status? A: "Active" products are in current production with ongoing availability. "Last Time Buy" indicates the manufacturer has announced end-of-life, with a final purchase deadline. LM2901QDRG4Q1 and LM2901VQDRG4Q1 (Texas Instruments) are Last Time Buy parts; inventory is limited and procurement should prioritize active alternatives for long-term supply security.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message