LP2901DRE4 Equivalent & Substitute Parts

Part Overview

The LP2901DRE4 is a general-purpose CMOS comparator IC with four independent comparator elements in a 14-SOIC surface-mount package. This device is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and production continuity. The LP2901 series provides identical functional and electrical characteristics across multiple packaging and qualification variants, enabling direct substitution based on application requirements and supply chain availability.

Key Parameters

Parameter	Value
Number of Elements	4
Output Type	CMOS, MOS, Open-Collector
Voltage - Supply, Single/Dual (±)	3V ~ 30V
Voltage - Input Offset (Max)	5mV @ 30V
Current - Input Bias (Max)	0.025µA @ 5V
Current - Output (Typ)	30mA @ 5V
Current - Quiescent (Max)	100µA
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LP2901DRE4 is determined by strict equivalence across the following critical parameters:

Functional equivalence: All substitute parts maintain identical element count (4), output type (CMOS, MOS, Open-Collector), and electrical specifications
Voltage specifications: Supply voltage range (3V ~ 30V), input offset voltage (5mV @ 30V), and output current (30mA @ 5V) are identical across all variants
Package compatibility: All substitutes use the 14-SOIC surface-mount package with identical physical dimensions (0.154", 3.90mm Width)
Environmental compliance: All parts meet ROHS3, REACH, and MSL requirements
Qualification variants: Automotive-grade alternatives (LP2901IDRG4Q1, LP2901IDRQ1) include AEC-Q100 qualification for automotive applications

The LP2901DR serves as the primary manufacturer-recommended substitute with active product status. The LP2901IDRG4Q1 and LP2901IDRQ1 provide automotive-qualified alternatives with identical electrical performance but different packaging formats and product lifecycle status.

Parameter Comparison

Parameter	LP2901DRE4 (Main)	LP2901DR	LP2901IDRG4Q1	LP2901IDRQ1
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Last Time Buy	Active
Number of Elements	4	4	4	4
Output Type	CMOS, MOS, Open-Collector	CMOS, MOS, Open-Collector	CMOS, MOS, Open-Collector	CMOS, MOS, Open-Collector
Voltage - Supply, Single/Dual (±)	3V ~ 30V	3V ~ 30V	3V ~ 30V	3V ~ 30V
Voltage - Input Offset (Max)	5mV @ 30V	5mV @ 30V	5mV @ 30V	5mV @ 30V
Current - Input Bias (Max)	0.025µA @ 5V	0.025µA @ 5V	0.025µA @ 5V	0.025µA @ 5V
Current - Output (Typ)	30mA @ 5V	30mA @ 5V	30mA @ 5V	30mA @ 5V
Current - Quiescent (Max)	100µA	100µA	100µA	100µA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging Format	-	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Cut Tape (CT)
Grade	Commercial	Commercial	Automotive	Automotive
Qualification	-	-	AEC-Q100	AEC-Q100
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	1035 Pcs New Original In Stock	18366 Pcs New Original In Stock	3380 Pcs New Original In Stock	10868 Pcs New Original In Stock

Engineering Selection Recommendations

Primary Substitute: LP2901DR

The LP2901DR is the manufacturer-recommended substitute with active product status. This part maintains complete electrical and functional equivalence to the LP2901DRE4 while offering superior supply chain availability (18,366 units in stock). Selection of LP2901DR is appropriate for all applications where commercial-grade specifications are sufficient.

Automotive Applications: LP2901IDRQ1

For automotive applications requiring AEC-Q100 qualification, the LP2901IDRQ1 provides identical electrical performance with automotive-grade certification. This part is actively produced and maintains adequate inventory (10,868 units). The cut-tape packaging format supports both prototype and production workflows.

Alternative Automotive Option: LP2901IDRG4Q1

The LP2901IDRG4Q1 offers automotive qualification with tape-and-reel packaging suitable for high-volume production. This part carries last-time-buy status, indicating limited future availability. Selection should be based on specific packaging requirements and production volume considerations.

Frequently Asked Questions (FAQ)

Q: Can LP2901DR be used as a direct replacement for LP2901DRE4?

A: Yes. The LP2901DR is electrically and functionally identical to the LP2901DRE4. Both parts share identical electrical specifications, operating temperature range, supply voltage range, and 14-SOIC package dimensions. The primary difference is product status: LP2901DRE4 is obsolete while LP2901DR is active.

Q: What is the difference between LP2901DR, LP2901IDRG4Q1, and LP2901IDRQ1?

A: All three parts are electrically identical with identical electrical specifications and package dimensions. The differences are: (1) LP2901DR is commercial-grade without automotive qualification; (2) LP2901IDRG4Q1 is automotive-qualified (AEC-Q100) with tape-and-reel packaging and last-time-buy status; (3) LP2901IDRQ1 is automotive-qualified (AEC-Q100) with cut-tape packaging and active status.

Q: Are the packaging formats interchangeable?

A: The packaging formats (cut tape, digi-reel, tape-and-reel) refer to supply and handling methods, not physical package dimensions. All substitute parts use the identical 14-SOIC surface-mount package (0.154", 3.90mm Width). PCB footprints and soldering processes are identical across all variants.

Q: Which substitute should I select for a new design?

A: For commercial applications, select LP2901DR due to active status and highest inventory availability. For automotive applications, select LP2901IDRQ1 due to active status and AEC-Q100 qualification. Avoid LP2901IDRG4Q1 for new designs due to last-time-buy status.

Q: Are all substitutes RoHS and REACH compliant?

A: Yes. All substitute parts (LP2901DR, LP2901IDRG4Q1, LP2901IDRQ1) are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (unlimited) for all variants.

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