LM2901M/ELLD606 Equivalent & Substitute Parts

Part Overview

The LM2901M/ELLD606 is a general-purpose comparator IC manufactured by Texas Instruments, featuring four independent open-collector output stages in a 14-SOIC surface-mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The LM2901 series provides voltage comparison functionality across a wide supply voltage range, making it suitable for analog signal processing applications requiring multiple independent comparators.

Key Parameters

Parameter	Value	Condition
Number of Elements	4	Independent comparators
Output Type	Open-Collector	—
Voltage - Supply, Single/Dual (±)	2V ~ 30V, ±1V ~ 15V	Operating range
Voltage - Input Offset (Max)	7mV	@ 5V
Current - Input Bias (Max)	0.25µA	@ 5V
Current - Output (Typ)	16mA	—
Current - Quiescent (Max)	2.5mA	—
Operating Temperature	-40°C ~ 125°C	TJ
Package / Case	14-SOIC (0.154", 3.90mm Width)	Surface Mount
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LM2901M/ELLD606 is determined by strict equivalence across the following critical parameters:

Functional Equivalence Criteria:

Number of independent comparator elements: 4
Output configuration: Open-Collector
Package type: 14-SOIC surface-mount
Supply voltage range compatibility: Minimum 2V ~ 30V single supply or ±1V ~ 15V dual supply
Input offset voltage: 7mV maximum
Input bias current: 0.25µA maximum
Output current capability: 16mA typical
Quiescent current: 2.5mA maximum
Operating temperature range: -40°C to 125°C
RoHS3 compliance and MSL Level 1 rating

Substitute parts are grouped into two categories based on product status and parametric alignment:

Category 1: Manufacturer-Recommended Substitute (Active Product) LM2901M/NOPB represents the direct active-production replacement with expanded supply voltage specifications.

Category 2: Parametric Equivalents (Active Products) LM2901MX/E7000692 and LM2901QDRDL maintain identical electrical specifications and package configuration to the obsolete LM2901M/ELLD606.

Parameter Comparison

Parameter	LM2901M/ELLD606 (Main)	LM2901M/NOPB (MFR Recommended)	LM2901MX/E7000692 (Parametric Equivalent)	LM2901QDRDL (Parametric Equivalent)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active
Number of Elements	4	4	4	4
Output Type	Open-Collector	Open-Collector	Open-Collector	Open-Collector
Voltage - Supply, Single/Dual (±)	2V ~ 30V, ±1V ~ 15V	2V ~ 36V, ±1V ~ 18V	2V ~ 30V, ±1V ~ 15V	2V ~ 30V, ±1V ~ 15V
Voltage - Input Offset (Max)	7mV @ 5V	7mV @ 30V	7mV @ 5V	7mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V
Current - Output (Typ)	16mA	16mA @ 5V	16mA	16mA
Current - Quiescent (Max)	2.5mA	2.5mA	2.5mA	2.5mA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Active Production): LM2901M/NOPB is the manufacturer-recommended substitute for the obsolete LM2901M/ELLD606. This part maintains all critical electrical parameters and offers expanded supply voltage specifications (2V ~ 36V single supply, ±1V ~ 18V dual supply). The operating temperature range is reduced to -40°C ~ 85°C, which is suitable for standard industrial and commercial applications. This part is actively manufactured and carries full ROHS3 compliance and MSL Level 1 certification.

For Parametric Equivalence (Extended Temperature Range): LM2901MX/E7000692 and LM2901QDRDL provide parametric equivalence with identical electrical specifications and extended operating temperature range (-40°C ~ 125°C), matching the original LM2901M/ELLD606. These parts are suitable for applications requiring the full temperature specification of the obsolete device. Both maintain ROHS3 compliance and MSL Level 1 rating. LM2901QDRDL offers the highest inventory availability (10,100 units).

Compliance and Certification: All substitute parts maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity) ratings, ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can LM2901M/NOPB be used as a direct replacement for LM2901M/ELLD606? A: Yes. LM2901M/NOPB is the manufacturer-recommended substitute. It maintains all critical electrical parameters including four independent open-collector comparators, 7mV input offset voltage, 0.25µA input bias current, and 16mA output current. The expanded supply voltage range (2V ~ 36V single, ±1V ~ 18V dual) provides additional design flexibility. The reduced operating temperature range (-40°C ~ 85°C) is suitable for standard applications.

Q: What is the difference between LM2901M/NOPB and the parametric equivalents? A: LM2901M/NOPB is the active production part with expanded supply voltage specifications and reduced operating temperature range (-40°C ~ 85°C). LM2901MX/E7000692 and LM2901QDRDL maintain the original supply voltage range (2V ~ 30V, ±1V ~ 15V) and extended operating temperature range (-40°C ~ 125°C). Select LM2901M/NOPB for standard applications; select parametric equivalents for designs requiring the full -40°C ~ 125°C temperature specification.

Q: Are all substitute parts in the same 14-SOIC package? A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm width) surface-mount package, ensuring direct PCB compatibility with the original LM2901M/ELLD606.

Q: Do the substitute parts meet RoHS and MSL requirements? A: Yes. All substitute parts are ROHS3 compliant and carry MSL Level 1 (unlimited) rating, meeting modern manufacturing and environmental standards.

Q: Which substitute part has the best inventory availability? A: LM2901QDRDL offers the highest inventory availability with 10,100 units in stock, followed by LM2901M/NOPB with 3,100 units and LM2901MX/E7000692 with 757 units.

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