LP2901IDRG4Q1 Equivalent & Substitute Parts

Part Overview

The LP2901IDRG4Q1 is a general-purpose CMOS comparator IC manufactured by Texas Instruments, featuring four independent comparator elements in a 14-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited availability. The part operates across a wide supply voltage range of 3V to 30V and is qualified to AEC-Q100 automotive standards, making it suitable for automotive and industrial applications requiring reliable comparison functionality.

Identifying equivalent and substitute parts is necessary due to the Last Time Buy status, which restricts future procurement. Equivalent alternatives with identical electrical and mechanical specifications ensure design continuity and supply chain flexibility.

Substiute Parts

LP2901IDRG4Q1

Texas InstrumentsIn Stock: 3461LP2901IDRG4Q1 Datasheet

Current PartRFQ

LP2901DR

Texas InstrumentsIn Stock: 18387LP2901DR Datasheet

Parametric EquivalentRFQ

LP2901IDRQ1

Texas InstrumentsIn Stock: 10898LP2901IDRQ1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2901IDRG4Q1 are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

• Identical base product number (LP2901)
• Matching output type (CMOS, MOS, Open-Collector)
• Identical supply voltage range (3V ~ 30V)
• Matching input offset voltage specification (5mV @ 30V)
• Identical input bias current (0.025µA @ 5V)
• Matching output current (30mA @ 5V)
• Identical quiescent current (100µA)
• Same operating temperature range (-40°C ~ 85°C)
• Identical package type (14-SOIC)
• Same mounting type (Surface Mount)
• Matching RoHS and MSL compliance

The LP2901IDRG4Q1 has two identified substitutes: LP2901IDRQ1 and LP2901DR. Both parts meet all electrical parameter requirements and are manufactured by Texas Instruments. The primary difference lies in packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the LP2901IDRG4Q1, the LP2901IDRQ1 is the primary substitute. Both parts carry AEC-Q100 automotive qualification and are graded for automotive applications, ensuring equivalent reliability and compliance for automotive designs. The LP2901IDRQ1 maintains Active product status, providing long-term availability and supply chain stability.

The LP2901DR is a secondary alternative that meets all electrical specifications and maintains ROHS3 compliance and MSL Level 1 rating. However, this part does not carry explicit automotive grade or AEC-Q100 qualification designation. Selection of LP2901DR should be limited to non-automotive applications or where automotive qualification is not a design requirement.

Both substitute parts are available in higher inventory quantities than the LP2901IDRG4Q1, supporting immediate procurement needs. The choice between LP2901IDRQ1 and LP2901DR depends on application classification and qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can LP2901IDRQ1 be used as a direct replacement for LP2901IDRG4Q1?

A: Yes. The LP2901IDRQ1 is a direct electrical and mechanical equivalent. Both parts share identical electrical specifications, package type (14-SOIC), and automotive qualification (AEC-Q100). The primary difference is packaging format: LP2901IDRG4Q1 uses Tape & Reel (TR) while LP2901IDRQ1 uses Cut Tape (CT). Both formats are compatible with standard surface mount assembly processes.

Q: Is LP2901DR suitable for automotive applications?

A: The LP2901DR meets all electrical specifications required for the LP2901IDRG4Q1 and maintains ROHS3 compliance and MSL Level 1 rating. However, it does not carry explicit automotive grade or AEC-Q100 qualification. Use LP2901DR only in non-automotive applications or where automotive qualification is not mandated by design specifications.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Both packaging formats contain identical components in the same 14-SOIC package. Tape & Reel (TR) provides components on continuous carrier tape suitable for high-volume automated assembly. Cut Tape (CT) provides components on shorter tape segments. Selection depends on assembly equipment compatibility and order quantity requirements.

Q: Why is LP2901IDRG4Q1 marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this specific part number variant. Existing inventory is available for final orders, but no future production is planned. Substituting to LP2901IDRQ1 or LP2901DR ensures continued availability for future production runs.

Q: Are all three parts RoHS compliant?

A: Yes. LP2901IDRG4Q1, LP2901IDRQ1, and LP2901DR are all ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, meeting environmental and reliability standards for industrial and automotive applications.