LP2901D Equivalent & Substitute Parts

Part Overview

The LP2901D is a general-purpose comparator IC manufactured by Texas Instruments, featuring four independent comparator elements in a 14-SOIC surface-mount package. The device operates across a wide supply voltage range of 3V to 30V and is designed for applications requiring precision voltage comparison with CMOS, MOS, and open-collector output configurations.

The LP2901D carries a Last Time Buy product status, indicating that Texas Instruments has discontinued active production. This status necessitates identification of equivalent substitute parts to ensure design continuity and procurement availability for new projects or production runs.

Substiute Parts

LP2901D

Texas InstrumentsIn Stock: 1910LP2901D Datasheet

Current PartRFQ

LP2901DR

Texas InstrumentsIn Stock: 18387LP2901DR Datasheet

MFR RecommendedRFQ

LM2902DR2G

onsemiIn Stock: 205187LM2902DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP2901D is determined by strict alignment across the following critical parameters:

Primary Substitution Criteria:

• Package type: 14-SOIC surface-mount configuration
• Number of functional elements: 4 independent comparator or amplifier circuits
• Supply voltage range: Minimum 3V, maximum 30V or higher
• Output configuration: Compatible with CMOS, MOS, or open-collector topologies
• Input offset voltage: Maximum 5mV or lower
• Input bias current: Maximum 0.025µA or lower
• Output current capability: Minimum 30mA
• Quiescent current: Maximum 100µA or lower
• Operating temperature range: Minimum -40°C to maximum 85°C or wider
• RoHS3 compliance and MSL Level 1 rating

Identified Substitute Parts:

1. LP2901DR (Texas Instruments) – Direct manufacturer equivalent with identical electrical specifications and packaging. Differs only in packaging format (Cut Tape & Digi-Reel vs. Tube) and product status (Active vs. Last Time Buy).

2. LM2902DR2G (onsemi) – Cross-manufacturer substitute with compatible functional architecture. Operates as a general-purpose amplifier with four circuits in 14-SOIC package. Meets or exceeds all critical electrical parameters with extended operating temperature range (-40°C to 105°C) and improved input bias current specification (90 nA vs. 0.025µA).

Parameter Comparison

Engineering Selection Recommendations

LP2901DR Selection: The LP2901DR is the primary substitute for the LP2901D. Both parts are manufactured by Texas Instruments and share identical electrical specifications, functional architecture, and package configuration. The LP2901DR maintains Active product status, ensuring long-term availability and supply chain continuity. Selection of LP2901DR requires no design modifications and provides direct functional equivalence. This part is recommended for applications where Texas Instruments component continuity is a procurement requirement.

LM2902DR2G Selection: The LM2902DR2G, manufactured by onsemi, serves as a cross-manufacturer alternative with enhanced electrical performance characteristics. The part exceeds LP2901D specifications in input offset voltage (2mV vs. 5mV), input bias current (90nA vs. 0.025µA), and output current capability (40mA vs. 30mA). The extended operating temperature range (-40°C to 105°C) provides additional thermal margin. The LM2902DR2G maintains Active product status and full RoHS3 compliance with MSL Level 1 rating. This part is suitable for applications where cross-manufacturer sourcing is acceptable and improved electrical performance is beneficial.

Both substitute parts maintain identical package geometry, surface-mount configuration, and regulatory compliance status, enabling direct PCB-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can LP2901DR be used as a direct replacement for LP2901D? A: Yes. The LP2901DR is electrically and functionally identical to the LP2901D. Both parts feature four general-purpose comparator elements, identical supply voltage range (3V to 30V), matching input offset voltage (5mV @ 30V), and identical output current specifications (30mA @ 5V). The only differences are packaging format (Cut Tape & Digi-Reel vs. Tube) and product status (Active vs. Last Time Buy). No design changes are required.

Q: Is the LM2902DR2G compatible with LP2901D applications? A: The LM2902DR2G is functionally compatible with the LP2901D in applications where the device operates as a general-purpose comparator or amplifier. Both parts share the same 14-SOIC package, four-element configuration, and 3V to 32V supply voltage range. The LM2902DR2G offers improved electrical performance with lower input offset voltage (2mV vs. 5mV) and lower input bias current (90nA vs. 0.025µA). Compatibility depends on specific circuit requirements; designs sensitive to input offset voltage or bias current may benefit from the LM2902DR2G specifications.

Q: What is the difference between LP2901D and LP2901DR packaging? A: The LP2901D is supplied in Tube packaging, while the LP2901DR is supplied in Cut Tape (CT) & Digi-Reel format. Both use identical 14-SOIC surface-mount packages with 0.154" (3.90mm) width. The packaging difference affects handling and automated assembly processes but does not impact electrical performance or PCB-level compatibility.

Q: Are all three parts RoHS3 compliant? A: Yes. The LP2901D, LP2901DR, and LM2902DR2G are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) rating. All parts meet REACH requirements and carry EAR99 export classification.

Q: What is the operating temperature range difference between LP2901D and LM2902DR2G? A: The LP2901D operates from -40°C to 85°C, while the LM2902DR2G operates from -40°C to 105°C. The LM2902DR2G provides a 20°C extended upper temperature limit, offering additional thermal margin for high-temperature applications.

Q: Can these parts be used interchangeably on the same PCB? A: Yes. All three parts use identical 14-SOIC surface-mount package geometry with 0.154" (3.90mm) width. PCB footprints, pin assignments, and mounting requirements are identical, enabling direct substitution without layout modifications.