LM2901AT14-13 Equivalent & Substitute Parts

Part Overview

The LM2901AT14-13 is a general-purpose comparator IC manufactured by Diodes Incorporated, featuring four independent differential comparators in a 14-TSSOP surface-mount package. This device operates across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply), with a maximum input offset voltage of 2mV at 5V and typical output current of 16mA at 5V. The part is currently active in production with RoHS3 compliance and MSL-3 moisture sensitivity rating.

Equivalent and substitute parts are necessary when the original LM2901AT14-13 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements necessitate different electrical characteristics such as extended temperature ranges, automotive-grade qualification, or alternative output configurations.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM2901AT14-13
Manufacturer	Diodes Incorporated
Category	Linear Comparator
Package Type	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Number of Elements	4
Voltage Supply Range (Single/Dual)	2V ~ 36V / ±1V ~ 18V
Input Offset Voltage (Max)	2mV @ 5V
Input Bias Current (Max)	0.25µA @ 5V
Output Current (Typ)	16mA @ 5V
Quiescent Current (Max)	2.5mA
Operating Temperature	-40°C ~ 125°C
Product Status	Active
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the LM2901AT14-13 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Number of comparator elements (must be 4)
Supply voltage range (minimum 2V ~ 36V single supply or ±1V ~ ±18V dual supply)
Input offset voltage specification (≤2mV @ 5V preferred)
Input bias current (≤0.25µA @ 5V)
Output current capability (≥16mA @ 5V)
Quiescent current (≤2.5mA)
Operating temperature range (must include -40°C ~ 125°C)

Package and Mechanical Compatibility:

Surface-mount technology required
14-pin package format (TSSOP, SOIC, or CDIP acceptable)
Pin-compatible footprints for direct substitution

Regulatory and Quality Requirements:

RoHS3 compliance mandatory
Active or Last Time Buy product status acceptable
Automotive-grade qualification (AEC-Q100) optional but beneficial for extended reliability

Substitutes are grouped into three categories based on package type: 14-SOIC surface-mount variants, 14-TSSOP surface-mount variants, and 14-CDIP through-hole variants. Within each package category, substitutes are further differentiated by output type (open-collector vs. standard), manufacturer, and product status.

Parameter Comparison

Part Number	Manufacturer	Package	Mounting	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent (Max)	Temp Range	Status
LM2901AT14-13	Diodes Inc.	14-TSSOP	Surface Mount	2V~36V / ±1V~18V	2mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
LM139ADR	Texas Instruments	14-SOIC	Surface Mount	2V~30V / ±1V~15V	2mV @ 30V	0.1µA @ 5V	20mA	2mA	-55°C ~ 125°C	Active
LM139J/PB	Texas Instruments	14-CDIP	Through Hole	2V~36V / ±1V~18V	5mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	-55°C ~ 125°C	Active
LM239AD	STMicroelectronics	14-SOIC	Surface Mount	2V~32V / ±1V~16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	Obsolete
LM239ADR	Texas Instruments	14-SOIC	Surface Mount	2V~30V / ±1V~15V	3mV @ 30V	0.25µA @ 5V	20mA	2mA	-25°C ~ 85°C	Active
LM2901AVQDR	Texas Instruments	14-SOIC	Surface Mount	2V~32V / ±1V~16V	2mV @ 32V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active
LM2901AVQDRQ1	Texas Instruments	14-SOIC	Surface Mount	2V~36V / ±1V~18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active
LM2901D	STMicroelectronics	14-SOIC	Surface Mount	2V~32V / ±1V~16V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
LM2901QDRG4Q1	Texas Instruments	14-SOIC	Surface Mount	2V~36V / ±1V~18V	7mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Last Time Buy
LM339PW	Texas Instruments	14-TSSOP	Surface Mount	2V~30V / ±1V~15V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	Last Time Buy
LP339M/NOPB	Texas Instruments	14-SOIC	Surface Mount	2V~36V / ±1V~18V	5mV @ 5V	0.025µA @ 5V	10mA @ 5V	100µA	0°C ~ 70°C	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (14-SOIC Package):

LM2901AVQDRQ1 provides the closest electrical match to the LM2901AT14-13, maintaining identical supply voltage range (2V~36V / ±1V~18V), input offset voltage (2mV @ 5V), input bias current (0.25µA @ 5V), and operating temperature range (-40°C ~ 125°C). This part is active in production with RoHS3 compliance and AEC-Q100 automotive qualification. The primary difference is package format (14-SOIC vs. 14-TSSOP) and increased output current capability (20mA vs. 16mA).

LM2901AVQDR offers equivalent electrical performance across the full operating temperature range (-40°C ~ 125°C) with slightly reduced supply voltage range (2V~32V / ±1V~16V). This part is active in production and suitable for applications not requiring the extended 36V upper limit.

Alternative Package Options:

LM139J/PB provides a through-hole 14-CDIP package alternative with matching supply voltage range (2V~36V / ±1V~18V) and operating temperature (-40°C ~ 125°C). This option is appropriate for legacy designs or applications requiring through-hole mounting. Input offset voltage is specified at 5mV @ 30V, which is acceptable for general-purpose comparator applications.

LM339PW offers a 14-TSSOP package identical to the original part but with reduced supply voltage range (2V~30V / ±1V~15V) and narrower operating temperature (0°C ~ 70°C). This part carries Last Time Buy status and should not be selected for new designs.

Restricted Substitutes:

LM239AD (STMicroelectronics) is marked as Obsolete and should not be used for new production designs despite acceptable electrical parameters.

LP339M/NOPB features significantly different electrical characteristics including reduced output current (10mA vs. 16mA) and elevated quiescent current (100µA vs. 2.5mA), making it unsuitable as a direct substitute.

LM239ADR operates within a narrower temperature range (-25°C ~ 85°C) and reduced supply voltage range (2V~30V / ±1V~15V), limiting its applicability to commercial-grade applications only.

Frequently Asked Questions (FAQ)

Q: Can LM2901AVQDRQ1 replace LM2901AT14-13 in existing designs?

A: LM2901AVQDRQ1 is electrically equivalent but uses a 14-SOIC package instead of 14-TSSOP. PCB layout modifications are required as the footprints differ. Electrical performance is identical across all specified parameters. The part includes AEC-Q100 automotive qualification, providing enhanced reliability for demanding applications.

Q: What is the key difference between LM2901AVQDR and LM2901AVQDRQ1?

A: Both parts use 14-SOIC packaging and share identical operating temperature range (-40°C ~ 125°C). LM2901AVQDRQ1 includes AEC-Q100 automotive qualification and maintains the full supply voltage range (2V~36V / ±1V~18V). LM2901AVQDR operates within 2V~32V / ±1V~16V, making it suitable for non-automotive applications with lower voltage requirements.

Q: Why does LM139J/PB have different electrical specifications despite being a substitute?

A: LM139J/PB is a through-hole 14-CDIP package variant designed for legacy manufacturing processes. Input offset voltage is specified at 5mV @ 30V rather than 2mV @ 5V due to different measurement conditions. The part maintains the same supply voltage range and operating temperature as the original LM2901AT14-13, ensuring functional compatibility in circuit designs.

Q: Is LP339M/NOPB suitable as a substitute?

A: LP339M/NOPB is not recommended as a direct substitute. While it maintains the same supply voltage range (2V~36V / ±1V~18V), it features significantly reduced output current (10mA vs. 16mA) and elevated quiescent current (100µA vs. 2.5mA). These differences make it unsuitable for applications requiring the original part's output drive capability or low-power operation.

Q: Can LM239AD be used in new designs?

A: LM239AD carries Obsolete product status and should not be selected for new production designs. Although electrical parameters are acceptable, obsolete parts present supply chain risk and lack manufacturer support. Active alternatives such as LM2901AVQDR or LM2901AVQDRQ1 are recommended.

Q: What are the package compatibility considerations?

A: The LM2901AT14-13 uses 14-TSSOP surface-mount packaging. Direct package-compatible alternatives are limited to LM339PW (also 14-TSSOP). Most other substitutes use 14-SOIC packaging, requiring PCB redesign. LM139J/PB offers 14-CDIP through-hole packaging for legacy applications. Package selection depends on manufacturing process and PCB layout constraints.

Q: Which substitute offers the best long-term availability?

A: LM2901AVQDRQ1 is recommended for new designs due to active production status, AEC-Q100 automotive qualification, and full electrical equivalence to the original part. LM2901AVQDR provides an alternative with active status and identical temperature range. Both parts are manufactured by Texas Instruments with established supply chains.

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