LM2901AS14-13 Equivalent & Substitute Parts

Part Overview

The LM2901AS14-13 is a general-purpose comparator IC manufactured by Diodes Incorporated, featuring four independent differential comparators in a 14-SOIC 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 an input offset voltage of 2mV at 5V and a maximum quiescent current of 2.5mA. The part is currently in active production status with RoHS3 compliance and AEC-Q100 automotive qualification available in related variants.

Substitute parts are necessary when the original LM2901AS14-13 becomes unavailable due to supply constraints, when alternative packaging or mounting technologies are required for design flexibility, or when specific performance grades (such as automotive-qualified variants) are mandated by application requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM2901AS14-13
Manufacturer	Diodes Incorporated
Category	Linear
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Number of Elements	4
Type	General Purpose
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	2mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	2.5mA
Operating Temperature	-40°C ~ 125°C
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the LM2901AS14-13 is determined by the following critical parameters:

Functional Compatibility Parameters:

Number of Elements: Must be 4 independent comparators
Type: General Purpose comparator functionality
Voltage - Supply Range: Must support at minimum 2V ~ 36V single supply or ±1V ~ ±18V dual supply
Voltage - Input Offset (Max): Must not exceed 7mV @ 30V or equivalent specification
Current - Input Bias (Max): Must not exceed 0.25µA @ 5V
Operating Temperature: Must support -40°C ~ 125°C range

Package and Mounting Compatibility Parameters:

Mounting Type: Surface Mount preferred for direct replacement; Through-Hole variants acceptable for board redesign scenarios
Package / Case: 14-SOIC, 14-TSSOP, or 14-DIP packages are functionally equivalent with pin-compatible layouts
Supplier Device Package: 14-SO, 14-TSSOP, or 14-PDIP

Compliance and Certification Parameters:

RoHS Status: ROHS3 Compliant required
Product Status: Active or Last Time Buy acceptable; Obsolete parts require design validation
Automotive Grade: AEC-Q100 qualification available for mission-critical applications

Substitute parts are grouped into three categories: direct pin-compatible replacements in alternative surface-mount packages (14-TSSOP), functionally equivalent through-hole alternatives (14-DIP), and automotive-qualified variants with enhanced temperature and reliability specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Package / Case	Mounting Type	Voltage - Supply (V)	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp (°C)	Product Status	Automotive Grade
LM2901AS14-13	Diodes Incorporated	14-SOIC (3.90mm)	Surface Mount	2~36 / ±1~18	2mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40 ~ 125	Active	No
LM239D	STMicroelectronics	14-SOIC (3.90mm)	Surface Mount	2~32 / ±1~16	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-40 ~ 105	Active	No
LM239N	Texas Instruments	14-DIP (7.62mm)	Through Hole	2~30 / ±1~15	5mV @ 30V	0.25µA @ 5V	20mA	2mA	-25 ~ 85	Active	No
LM239PW	Texas Instruments	14-TSSOP (4.40mm)	Surface Mount	2~30 / ±1~15	5mV @ 30V	0.25µA @ 5V	20mA	2mA	-25 ~ 85	Last Time Buy	No
LM2901AVQPWRQ1	Texas Instruments	14-TSSOP (4.40mm)	Surface Mount	2~36 / ±1~18	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40 ~ 125	Active	Yes (AEC-Q100)
LM2901NSR	Texas Instruments	14-SOIC (5.30mm)	Surface Mount	2~30 / ±1~15	7mV @ 30V	0.25µA @ 5V	20mA	2.5mA	-40 ~ 125	Active	No
LM2901PWR	Rohm Semiconductor	14-TSSOP (4.40mm)	Surface Mount	2~36 / ±1~18	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40 ~ 125	Obsolete	No
LM2901QPWRG4Q1	Texas Instruments	14-TSSOP (4.40mm)	Surface Mount	2~36 / ±1~18	7mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40 ~ 125	Active	Yes (AEC-Q100)
LM2901QPWRQ1	Texas Instruments	14-TSSOP (4.40mm)	Surface Mount	2~36 / ±1~18	7mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40 ~ 125	Active	Yes (AEC-Q100)
LM2901VQPWRQ1	Texas Instruments	14-TSSOP (4.40mm)	Surface Mount	2~36 / ±1~18	7mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40 ~ 125	Active	Yes (AEC-Q100)
LM3302D	Texas Instruments	14-SOIC (3.90mm)	Surface Mount	2~28 / ±1~14	20mV @ 28V	0.5µA @ 5V	20mA	800µA	-40 ~ 85	Obsolete	No

Engineering Selection Recommendations

Direct Pin-Compatible Replacement (Same Package): LM239D from STMicroelectronics is the primary direct substitute in the 14-SOIC package. It maintains identical package dimensions (0.154", 3.90mm width) and surface-mount compatibility. The part operates within a slightly reduced supply voltage range (2V ~ 32V single supply versus 2V ~ 36V) and lower maximum operating temperature (105°C versus 125°C), making it suitable for general-purpose applications not requiring extended temperature operation. RoHS3 compliance and active product status ensure long-term availability.

Surface-Mount Package Alternative (14-TSSOP): The LM2901AVQPWRQ1, LM2901QPWRG4Q1, and LM2901QPWRQ1 from Texas Instruments provide functionally equivalent performance in the 14-TSSOP package (0.173", 4.40mm width). These variants maintain the full supply voltage range (2V ~ 36V / ±1V ~ ±18V) and extended temperature operation (-40°C ~ 125°C) matching the original part. The automotive-qualified variants (AVQPWRQ1, QPWRG4Q1, QPWRQ1) carry AEC-Q100 certification, suitable for automotive and mission-critical applications. All three are in active production with RoHS3 compliance.

Through-Hole Package Alternative (14-DIP): LM239N from Texas Instruments provides a through-hole mounting option in the 14-DIP package (0.300", 7.62mm) for applications requiring board redesign or legacy system compatibility. This part operates within a reduced supply voltage range (2V ~ 30V / ±1V ~ 15V) and narrower temperature range (-25°C ~ 85°C). It is currently in active production status with RoHS3 compliance.

Obsolete Parts (Not Recommended for New Designs): LM2901PWR (Rohm Semiconductor) and LM3302D (Texas Instruments) are marked as obsolete. LM2901PWR maintains full electrical compatibility but lacks active production support. LM3302D exhibits significantly higher quiescent current (800µA versus 2.5mA) and reduced supply voltage range, making it unsuitable as a direct substitute. These parts should be avoided for new designs unless existing inventory is available and design validation is completed.

Frequently Asked Questions (FAQ)

Q: Can I use LM239D as a direct replacement for LM2901AS14-13? A: LM239D is functionally compatible in the same 14-SOIC package with identical pin configuration. However, it operates at a reduced maximum supply voltage (32V versus 36V) and lower maximum temperature (105°C versus 125°C). For applications operating within 2V ~ 32V supply range and -40°C ~ 105°C temperature range, LM239D is a valid substitute.

Q: What is the difference between LM2901QPWRQ1 and LM2901QPWRG4Q1? A: Both parts are electrically identical with identical electrical specifications and AEC-Q100 automotive qualification. The primary difference is packaging format: QPWRQ1 is supplied in Cut Tape (CT) & Digi-Reel format, while QPWRG4Q1 is also supplied in Cut Tape & Digi-Reel. Both are in active production and suitable for automotive applications.

Q: Can I use LM239N (14-DIP through-hole) as a substitute? A: LM239N is functionally compatible but requires board redesign due to different package type (through-hole versus surface-mount). It operates within a reduced supply voltage range (2V ~ 30V / ±1V ~ 15V) and narrower temperature range (-25°C ~ 85°C). Use only if board layout permits through-hole mounting and application requirements fall within the reduced specifications.

Q: Why is LM3302D listed as obsolete? A: LM3302D is marked obsolete by Texas Instruments and no longer in active production. Additionally, it exhibits significantly higher quiescent current consumption (800µA versus 2.5mA) and reduced supply voltage range (2V ~ 28V / ±1V ~ 14V), making it unsuitable as a direct substitute. Existing inventory may be available through secondary sources, but new designs should not rely on this part.

Q: Should I use automotive-qualified variants for non-automotive applications? A: Automotive-qualified variants (LM2901AVQPWRQ1, LM2901QPWRG4Q1, LM2901QPWRQ1) with AEC-Q100 certification are suitable for any application requiring enhanced reliability and extended temperature operation. These parts maintain full electrical compatibility with the original LM2901AS14-13 and are in active production, making them viable choices for general-purpose applications as well.

Q: What is the impact of different package widths (3.90mm versus 4.40mm versus 5.30mm)? A: Package width affects PCB layout and component density. The 14-SOIC (3.90mm) and 14-TSSOP (4.40mm) are both compact surface-mount packages suitable for high-density designs. The 14-SOIC (5.30mm) variant (LM2901NSR) is a wider SOIC package. All three are surface-mount compatible; selection depends on available PCB routing space and design constraints.

Q: Is RoHS3 compliance mandatory for my application? A: All recommended active-status substitute parts carry RoHS3 compliance certification. If your application or supply chain requires RoHS3 compliance, all listed active parts meet this requirement. Obsolete parts may not carry current RoHS3 certification and should be avoided.

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