LM2901VDR2 Equivalent & Substitute Parts

Part Overview

The LM2901VDR2 is a quad general-purpose comparator IC manufactured by onsemi in 14-SOIC surface mount packaging. This device is classified as obsolete, indicating discontinued production and limited availability. The LM2901VDR2 operates as a linear comparator with single supply capability, making it suitable for signal comparison and threshold detection applications. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity and procurement reliability.

Key Parameters

Parameter	LM2901VDR2
Manufacturer	onsemi
Part Number	LM2901VDR2
Category	Linear Comparator
Package Type	14-SOIC
Number of Elements	4
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the LM2901VDR2 are selected based on the following criteria:

Primary Substitution Parameters:

Number of Elements: 4 comparators per package
Package Type: 14-SOIC surface mount (0.154", 3.90mm width)
Functional Classification: General-purpose comparator
Mounting Type: Surface mount

Secondary Compatibility Factors:

Supply voltage range compatibility
Input offset voltage specifications
Input bias current ratings
Output current capability
Operating temperature range
RoHS and REACH compliance status

Substitute parts are grouped into two categories: direct package equivalents (14-SOIC) and alternative package options (14-CDIP, 14-TSSOP) that maintain functional compatibility while offering different form factors.

Parameter Comparison

Part Number	Manufacturer	Package	Product Status	Supply Voltage (Single/Dual)	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	RoHS Status
LM2901VDR2	onsemi	14-SOIC	Obsolete	-	-	-	-	-	-	RoHS non-compliant
LM2901VDR2G	onsemi	14-SOIC	Active	3V ~ 36V, ±1.5V ~ 18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	ROHS3 Compliant
LM2901VQDR	Rohm Semiconductor	14-SOIC	Obsolete	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	0.25µA @ 5V	16nA @ 5V	2mA	-40°C ~ 125°C	ROHS3 Compliant
CMP04FSZ	Analog Devices Inc.	14-SOIC	Active	3.3V ~ 36V, ±1.65V ~ 18V	1mV @ 5V	0.1µA @ 5V	16mA @ 5V	3mA	-40°C ~ 85°C	ROHS3 Compliant
LM139AJ/PB	Texas Instruments	14-CDIP	Active	2V ~ 36V, ±1V ~ 18V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	-55°C ~ 125°C	ROHS3 Compliant
LM139DT	STMicroelectronics	14-SOIC	Active	2V ~ 32V, ±1V ~ 16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-55°C ~ 125°C	ROHS3 Compliant
LM239APT	STMicroelectronics	14-TSSOP	Active	2V ~ 32V, ±1V ~ 16V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	ROHS3 Compliant
LM239DT	STMicroelectronics	14-SOIC	Active	2V ~ 32V, ±1V ~ 16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	ROHS3 Compliant
LM239PT	STMicroelectronics	14-TSSOP	Active	2V ~ 32V, ±1V ~ 16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2mA	-40°C ~ 105°C	ROHS3 Compliant
LM339D	STMicroelectronics	14-SOIC	Active	2V ~ 32V, ±1V ~ 16V	5mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	ROHS3 Compliant
MAX516AEWG+T	Analog Devices Inc./Maxim Integrated	24-SOIC	Active	4.75V ~ 16.5V	-	0.3µA @ 16.5V	-	10mA	-40°C ~ 85°C	ROHS3 Compliant

Engineering Selection Recommendations

Direct Package Equivalents (14-SOIC Surface Mount):

LM2901VDR2G represents the primary substitute, offering identical package geometry and active product status with ROHS3 compliance. This part maintains the same base product number (LM2901) and provides extended operating temperature range (-40°C to 125°C) compared to the obsolete original.

LM239DT and LM139DT provide functionally equivalent 14-SOIC alternatives from STMicroelectronics with active status and ROHS3 compliance. Both support dual supply operation and maintain comparable electrical specifications.

Alternative Package Options:

LM239APT and LM239PT offer 14-TSSOP packaging, reducing board footprint while maintaining electrical compatibility. These parts are suitable for space-constrained applications and feature active product status with ROHS3 compliance.

LM139AJ/PB provides through-hole 14-CDIP packaging for applications requiring traditional DIP mounting. This option is appropriate for legacy board designs or applications where surface mount technology is not feasible.

Compliance Considerations:

All recommended substitutes carry ROHS3 compliance status, whereas the original LM2901VDR2 is RoHS non-compliant. This distinction is critical for applications subject to RoHS regulations. All substitute parts maintain REACH Unaffected status consistent with the original device.

Supply Voltage Compatibility:

The LM2901VDR2G supports the widest supply voltage range (3V ~ 36V single supply, ±1.5V ~ 18V dual supply). Applications requiring operation below 3V should consider LM139DT or LM239 series parts, which support 2V minimum supply voltage.

Frequently Asked Questions (FAQ)

Q: Can LM2901VDR2G be used as a direct replacement for LM2901VDR2?

A: Yes. Both parts share identical 14-SOIC packaging, base product number (LM2901), and functional classification as quad general-purpose comparators. LM2901VDR2G is the active production equivalent with ROHS3 compliance.

Q: What is the primary difference between LM239 and LM339 series comparators?

A: Both are quad general-purpose comparators in 14-SOIC packaging. The LM339 series operates over a narrower temperature range (0°C ~ 70°C for LM339D) compared to LM239 variants (-40°C ~ 105°C). Selection depends on application temperature requirements.

Q: Are 14-TSSOP packages (LM239APT, LM239PT) electrically equivalent to 14-SOIC packages?

A: Yes. The 14-TSSOP variants maintain identical electrical specifications and functional performance. The difference is physical form factor: TSSOP provides a narrower package (0.173" vs 0.154" width) for reduced board area.

Q: Why is MAX516AEWG+T listed as a substitute despite different pin count?

A: MAX516AEWG+T is a 24-SOIC package containing quad comparators with different pinout. This part is suitable only for new designs where PCB layout can accommodate the larger package. It is not recommended for direct replacement in existing LM2901VDR2 designs.

Q: What supply voltage range should I use for maximum compatibility?

A: For broadest compatibility across all substitute options, maintain supply voltage between 3V and 32V (single supply) or ±1.5V to 16V (dual supply). This range is supported by all recommended 14-SOIC and 14-TSSOP alternatives.

Q: Are there temperature range limitations I should consider?

A: LM339D operates only to 70°C maximum. For applications requiring extended temperature operation to 125°C, select LM2901VDR2G, LM139 series, or LM239 series parts. Verify your application's thermal requirements before selection.

Q: What is the significance of RoHS compliance for this part?

A: The original LM2901VDR2 is RoHS non-compliant. All recommended substitutes are ROHS3 compliant, meeting current environmental regulations. If your application or supply chain requires RoHS compliance, substitute parts are mandatory.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message