LM2901F-E2 Equivalent & Substitute Parts

Part Overview

The LM2901F-E2 is a quad general-purpose comparator manufactured by Rohm Semiconductor in a 14-SOP surface mount package. This device features open-collector output configuration and operates across a wide supply voltage range of 3V to 32V (single supply) or ±1.5V to ±16V (dual supply). The comparator is designed for general-purpose signal comparison applications requiring low input offset voltage and minimal input bias current.

The LM2901F-E2 maintains active product status with 3,491 units in current inventory. Equivalent and substitute parts are necessary to address supply chain flexibility, alternative packaging requirements, or specific application constraints while maintaining functional compatibility.

Key Parameters

Parameter	Value	Specification Notes
Number of Elements	4	Quad comparator configuration
Output Type	Open-Collector	Primary output configuration
Voltage Supply Range (Single)	3V ~ 32V	Single supply operation
Voltage Supply Range (Dual)	±1.5V ~ ±16V	Dual supply operation
Input Offset Voltage (Max)	4.5mV @ 1.4V	Measured at 1.4V reference
Input Bias Current (Max)	0.05µA @ 1.4V	Measured at 1.4V reference
Output Current (Typ)	16mA @ 5V	Typical output drive capability
Quiescent Current (Max)	2mA	Maximum supply current at rest
Operating Temperature	-40°C ~ 125°C	Industrial temperature range
Package Type	14-SOIC (0.173", 4.40mm Width)	Surface mount configuration
RoHS Status	ROHS3 Compliant	Lead-free certification
Moisture Sensitivity Level	1 (Unlimited)	No moisture sensitivity restrictions

Substitute Part Grouping Explanation

Substitution compatibility for the LM2901F-E2 is determined by the following critical parameters:

Functional Requirements:

Quad comparator configuration (4 elements)
Open-collector output type
General-purpose comparator classification

Electrical Compatibility:

Supply voltage range must encompass or overlap with 3V ~ 32V (single) or ±1.5V ~ ±16V (dual)
Input offset voltage and input bias current specifications must be within acceptable application tolerances
Output current capability must support the intended load

Package and Mounting:

Surface mount technology required
14-pin package variants (SOIC, TSSOP, SOP) are mechanically compatible with appropriate PCB layout modifications
Tape & Reel or Cut Tape packaging formats support automated assembly

Compliance and Environmental:

ROHS3 compliance required for regulated applications
Moisture sensitivity level must be compatible with storage and handling procedures

Substitute parts are grouped by package type and electrical performance tier, with consideration for product status and supply availability.

Parameter Comparison

Parameter	LM2901F-E2 (Rohm)	AS339AMTR-E1 (Diodes)	AS339GTR-G1 (Diodes)	AS339MTR-E1 (Diodes)	LMV339ID (TI)	LMV339MT/NOPB (TI)	LMV339MTX/NOPB (NSM)
Manufacturer	Rohm Semiconductor	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated	Texas Instruments	Texas Instruments	National Semiconductor
Number of Elements	4	4	4	4	4	4	4
Output Type	Open-Collector	Open-Collector	Open-Collector	Open-Collector	Open-Collector	CMOS, Open-Collector, TTL	CMOS, Open-Collector, TTL
Supply Voltage (Single)	3V ~ 32V	2V ~ 36V	2V ~ 36V	2V ~ 36V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
Supply Voltage (Dual)	±1.5V ~ ±16V	±1V ~ ±18V	±1V ~ ±18V	±1V ~ ±18V	N/A	N/A	N/A
Input Offset Voltage (Max)	4.5mV @ 1.4V	3mV @ 5V	5mV @ 5V	5mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V
Input Bias Current (Max)	0.05µA @ 1.4V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V
Output Current (Typ)	16mA @ 5V	16mA @ 5V	16mA @ 5V	16mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V
Quiescent Current (Max)	2mA	2mA	2mA	2mA	350µA	300µA	300µA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	14-SOIC (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)	14-TSSOP (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-TSSOP (0.173", 4.40mm)	14-TSSOP (0.173", 4.40mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	Not Specified
Product Status	Active	Active	Active	Active	Last Time Buy	Active	Active
Inventory Availability	3,491 Pcs	50,100 Pcs	53,080 Pcs	44,546 Pcs	364,322 Pcs	1,526 Pcs	2,000 Pcs

Engineering Selection Recommendations

Primary Substitutes (Diodes Incorporated AS339 Series):

The AS339AMTR-E1, AS339GTR-G1, and AS339MTR-E1 from Diodes Incorporated provide direct functional equivalence with extended supply voltage ranges (2V ~ 36V single, ±1V ~ ±18V dual) that encompass the LM2901F-E2 operating envelope. All three variants maintain quad open-collector comparator architecture, ROHS3 compliance, and active product status. The AS339AMTR-E1 and AS339MTR-E1 are available in 14-SOIC packaging with identical pin configuration to the LM2901F-E2. The AS339GTR-G1 offers 14-TSSOP packaging for applications requiring smaller footprint. Diodes Incorporated parts demonstrate superior inventory availability (44,546 to 53,080 units) and lower input offset voltage specifications (3mV to 5mV).

Secondary Substitutes (Texas Instruments LMV339 Series):

The LMV339ID and LMV339MT/NOPB from Texas Instruments provide alternative solutions with restricted supply voltage range (2.7V ~ 5.5V single supply only). These parts are suitable for low-voltage applications and offer higher output current capability (84mA typical) compared to the LM2901F-E2 (16mA typical). The LMV339ID maintains the full industrial temperature range (-40°C ~ 125°C) and unlimited moisture sensitivity level, matching the LM2901F-E2 environmental specifications. The LMV339MT/NOPB operates to -40°C ~ 85°C with 300µA quiescent current. The LMV339ID is in Last Time Buy status, indicating limited future availability. LMV339MT/NOPB maintains active status with 1,526 units in inventory.

Tertiary Substitute (National Semiconductor LMV339MTX/NOPB):

The LMV339MTX/NOPB provides functional equivalence with identical electrical specifications to the Texas Instruments LMV339 series but is available in bulk packaging. This part is restricted to 2.7V ~ 5.5V single supply operation and is suitable only for low-voltage applications. Moisture sensitivity level is not specified. Inventory availability is limited to 2,000 units.

Selection Criteria:

For applications requiring the full supply voltage range of the LM2901F-E2 (3V ~ 32V single or ±1.5V ~ ±16V dual), select from the Diodes Incorporated AS339 series. For low-voltage applications (2.7V ~ 5.5V), the Texas Instruments LMV339 series offers higher output current capability. Package selection should be based on PCB layout constraints: 14-SOIC for direct footprint compatibility or 14-TSSOP for reduced board space. All recommended substitutes maintain ROHS3 compliance and active or Last Time Buy product status.

Frequently Asked Questions (FAQ)

Q: Can the AS339AMTR-E1 directly replace the LM2901F-E2 on the same PCB?

A: The AS339AMTR-E1 is pin-compatible and functionally equivalent for applications operating within the overlapping supply voltage range (3V ~ 32V single supply). Both devices use 14-SOIC packaging with identical pinout. However, the AS339AMTR-E1 package width is 0.154" (3.90mm) compared to the LM2901F-E2 at 0.173" (4.40mm). PCB footprint verification is required before substitution.

Q: What is the key difference between the Diodes AS339 variants?

A: The AS339AMTR-E1 and AS339MTR-E1 are both 14-SOIC packages with identical electrical specifications. The primary difference is packaging format: AS339AMTR-E1 is supplied in Tape & Reel format, while AS339MTR-E1 is supplied in Cut Tape and Digi-Reel format. The AS339GTR-G1 uses 14-TSSOP packaging, offering a smaller footprint (0.173" width, same as LM2901F-E2) with slightly higher input offset voltage (5mV vs. 3mV).

Q: Why do the Texas Instruments LMV339 parts have higher output current?

A: The LMV339 series uses CMOS output architecture with TTL compatibility, enabling 84mA typical output current compared to 16mA for the open-collector AS339 and LM2901F-E2 designs. This higher drive capability is suitable for applications requiring direct TTL/CMOS logic interface without external pull-up resistors.

Q: Can I use the LMV339 series in applications requiring ±16V dual supply operation?

A: No. The LMV339 series is restricted to single supply operation (2.7V ~ 5.5V) and does not support dual supply configuration. For applications requiring ±1.5V to ±16V dual supply operation, use the LM2901F-E2 or Diodes AS339 series.

Q: What is the significance of the "Last Time Buy" status for LMV339ID?

A: Last Time Buy status indicates that Texas Instruments has announced end-of-life for this part. While 364,322 units are currently in inventory, no new production is planned after the Last Time Buy date. For long-term supply security, select active status parts such as AS339AMTR-E1, AS339GTR-G1, or LMV339MT/NOPB.

Q: How does moisture sensitivity level affect component selection?

A: Moisture Sensitivity Level (MSL) 1 indicates unlimited shelf life without moisture exposure restrictions. MSL 3 (168 hours) requires controlled storage conditions and bake-out procedures before reflow soldering. The LM2901F-E2 has MSL 1. The AS339GTR-G1 and AS339MTR-E1 have MSL 3, requiring additional handling procedures. For applications with stringent supply chain requirements, MSL 1 parts are preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts (AS339AMTR-E1, AS339GTR-G1, AS339MTR-E1, LMV339ID, LMV339MT/NOPB, and LMV339MTX/NOPB) are ROHS3 compliant and REACH unaffected, matching the LM2901F-E2 environmental certification status.

Q: What is the operating temperature range difference between substitutes?

A: The LM2901F-E2 and LMV339ID operate across the full industrial range (-40°C ~ 125°C). The Diodes AS339 series and LMV339MT/NOPB are rated to -40°C ~ 85°C. For applications requiring operation above 85°C, select the LM2901F-E2 or LMV339ID.

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