LM2901VD Equivalent & Substitute Parts

Part Overview

The LM2901VD is a general-purpose quad comparator IC manufactured by onsemi in 14-SOIC surface-mount packaging. This device features CMOS, open-collector, and TTL output configurations, supporting supply voltages from 3V to 36V (single) or ±1.5V to ±18V (dual). The LM2901VD is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	LM2901VD
Manufacturer	onsemi
Package / Case	14-SOIC (0.154", 3.90mm Width)
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
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LM2901VD is determined by the following critical parameters:

Package compatibility: 14-SOIC surface-mount form factor (0.154" width, 3.90mm)
Functional equivalence: Quad comparator with 4 independent elements
Output type compatibility: Open-collector output capability
Supply voltage range: Minimum coverage of 3V to 36V single supply or equivalent dual supply
Input offset voltage: Maximum 7mV @ 5V
Input bias current: Maximum 0.25µA @ 5V
Output current: Minimum 16mA @ 5V
Quiescent current: Maximum 2.5mA
Operating temperature range: Coverage of -40°C to 125°C

Substitute parts are grouped into two categories: direct pin-compatible replacements (AS339 series from Diodes Incorporated, BA2901 series from Rohm Semiconductor) and functional equivalents (CMP04FSZ from Analog Devices, LM139 and LM239 series from Texas Instruments and STMicroelectronics).

Parameter Comparison

Parameter	LM2901VD	AS339AMTR-E1	AS339MTR-E1	AS339MTR-G1	BA2901SF-E2	BA2901YF-MGE2	CMP04FSZ-REEL	LM139ADRG4	LM139ADT	LM139J/PB	LM239ADT
Manufacturer	onsemi	Diodes Inc.	Diodes Inc.	Diodes Inc.	Rohm Semi.	Rohm Semi.	Analog Devices	Texas Inst.	STMicro.	Texas Inst.	STMicro.
Package / Case	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOP (0.173")	14-SOP (0.173")	14-SOIC (0.154")	14-SOIC (0.154")	14-SOIC (0.154")	14-CDIP (0.300")	14-SOIC (0.154")
Number of Elements	4	4	4	4	4	4	4	4	4	4	4
Output Type	CMOS, Open-Collector, TTL	Open-Collector	Open-Collector	Open-Collector	Open-Collector	Open-Collector	CMOS, DTL, ECL, MOS, Open-Collector, TTL	Open-Collector, Open-Drain	Not specified	Open-Collector, Open-Drain	CMOS, DTL, ECL, MOS, Open-Collector, TTL
Voltage - Supply, Single/Dual (±)	3V ~ 36V, ±1.5V ~ 18V	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 ~ 30V, ±1V ~ 15V	2V ~ 32V, ±1V ~ 16V	2V ~ 36V, ±1V ~ 18V	2V ~ 32V, ±1V ~ 16V
Voltage - Input Offset (Max)	7mV @ 5V	3mV @ 5V	5mV @ 5V	5mV @ 5V	7mV @ 5V	7mV @ 5V	1mV @ 5V	2mV @ 30V	2mV @ 30V	5mV @ 30V	2mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.05µA @ 5V	0.1µA @ 5V	0.1µA @ 5V	0.1µA @ 5V	0.1µA @ 5V	0.1µA @ 5V
Current - Output (Typ)	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA	16mA @ 5V	16mA @ 5V	16mA @ 5V	20mA	16mA @ 5V	16mA @ 5V	16mA @ 5V
Current - Quiescent (Max)	2.5mA	2mA	2mA	2mA	2mA	1mA	3mA	2mA	2mA	2.5mA	2mA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 125°C	-40°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Through Hole	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Pin-Compatible, Surface Mount, 14-SOIC)

The AS339 series from Diodes Incorporated (AS339AMTR-E1, AS339MTR-E1, AS339MTR-G1) provides direct pin-compatible replacement in 14-SOIC packaging. All variants are active products with ROHS3 compliance. AS339AMTR-E1 offers the lowest input offset voltage (3mV @ 5V) and is available in Tape & Reel packaging. AS339MTR-E1 and AS339MTR-G1 differ primarily in packaging format (Cut Tape & Digi-Reel vs. Tape & Reel) and moisture sensitivity level.

The BA2901 series from Rohm Semiconductor (BA2901SF-E2, BA2901YF-MGE2) operates in 14-SOP packaging with slightly different physical dimensions (0.173" width vs. 0.154"). BA2901YF-MGE2 is qualified to AEC-Q100 automotive standards with extended temperature range (-40°C to 125°C) and lower quiescent current (1mA), suitable for automotive applications.

Secondary Substitutes (Functional Equivalents, Surface Mount)

CMP04FSZ-REEL from Analog Devices provides superior performance with 1mV input offset voltage and 100dB CMRR/PSRR specifications. Operating temperature range is limited to -40°C to 85°C.

LM239ADT from STMicroelectronics offers full output type compatibility (CMOS, DTL, ECL, MOS, Open-Collector, TTL) in 14-SOIC packaging with active product status and ROHS3 compliance.

LM139ADT from STMicroelectronics and LM139ADRG4 from Texas Instruments provide extended temperature range (-55°C to 125°C) with open-collector/open-drain outputs. LM139ADT is active; LM139ADRG4 is discontinued at DiGi Electronics.

Through-Hole Alternative

LM139J/PB from Texas Instruments is available in 14-CDIP through-hole packaging for legacy board designs, with extended temperature range (-55°C to 125°C) and active product status.

Frequently Asked Questions (FAQ)

Q: Can AS339 series parts directly replace LM2901VD without PCB modifications?

A: AS339AMTR-E1, AS339MTR-E1, and AS339MTR-G1 are pin-compatible in 14-SOIC packaging and require no PCB layout changes. However, verify that your application tolerates the reduced upper operating temperature limit (85°C vs. 125°C for LM2901VD).

Q: What is the difference between AS339AMTR-E1 and AS339MTR-E1?

A: Both are Diodes Incorporated AS339 variants in 14-SOIC packaging with identical electrical specifications. AS339AMTR-E1 uses Tape & Reel packaging; AS339MTR-E1 uses Cut Tape & Digi-Reel packaging. AS339MTR-E1 has MSL 3 (168 Hours) vs. MSL 1 (Unlimited) for AS339AMTR-E1.

Q: Is BA2901SF-E2 a direct replacement for LM2901VD?

A: BA2901SF-E2 is functionally equivalent but uses 14-SOP packaging (0.173" width) instead of 14-SOIC (0.154" width). PCB footprint modification is required. Electrical parameters are compatible.

Q: Which substitute offers the best performance specifications?

A: CMP04FSZ-REEL from Analog Devices provides the lowest input offset voltage (1mV @ 5V) and highest CMRR/PSRR (100dB). Operating temperature range is -40°C to 85°C, which may limit use in extended-temperature applications.

Q: Can I use LM139J/PB in a surface-mount design?

A: LM139J/PB is a through-hole 14-CDIP package and is not suitable for surface-mount PCBs. Use surface-mount alternatives such as LM139ADT or AS339 series instead.

Q: What is the impact of RoHS compliance on substitute selection?

A: LM2901VD is RoHS non-compliant. All listed substitutes are ROHS3 compliant, meeting current environmental regulations. Verify compliance requirements for your application and supply chain.

Q: Does BA2901YF-MGE2 automotive qualification affect general industrial use?

A: BA2901YF-MGE2 is AEC-Q100 qualified for automotive applications but is fully functional in industrial and consumer applications. The automotive qualification indicates higher reliability standards and extended temperature range (-40°C to 125°C).

Q: What are the packaging format differences among Diodes AS339 variants?

A: AS339AMTR-E1 is supplied in Tape & Reel (TR); AS339MTR-E1 is supplied in Cut Tape (CT) & Digi-Reel; AS339MTR-G1 is supplied in Tape & Reel (TR). All use identical 14-SOIC surface-mount packages. Selection depends on assembly equipment and volume requirements.

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