LMP8640HVMKX-F/NOPB Equivalent & Substitute Parts

Part Overview

The LMP8640HVMKX-F/NOPB is a current sense amplifier manufactured by Texas Instruments, designed for single-circuit current sensing applications. This device operates across a wide supply voltage range of 2.7 V to 12 V and is housed in a SOT-23-6 Thin package suitable for surface mount applications. The part is currently in Active product status with 744 pieces available in new original inventory.

Identification of equivalent and substitute parts becomes necessary when the primary part reaches end-of-life status, inventory constraints occur, or when alternative packaging formats are required for manufacturing flexibility. The LMP8640HVMKX-F/NOPB has a documented substitute with identical electrical performance but different packaging configuration.

Substiute Parts

LMP8640HVMKX-F/NOPB

Texas InstrumentsIn Stock: 766LMP8640HVMKX-F/NOPB Datasheet

Current PartRFQ

LMP8640HVMKE-F/NOPB

Texas InstrumentsIn Stock: 2554LMP8640HVMKE-F/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMP8640HVMKX-F/NOPB is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications in the following critical areas:

Electrical Performance Criteria:

• Amplifier type: Current Sense
• Number of circuits: 1
• Slew rate: 1.8 V/µs
• Gain bandwidth product: 450 kHz
• Input bias current: 13 µA
• Input offset voltage: 900 mV
• Supply current: 2.3 mA
• Supply voltage range: 2.7 V to 12 V
• Operating temperature: -40°C to 125°C

Mechanical & Compliance Criteria:

• Package type: SOT-23-6 Thin (TSOT-23-6)
• Mounting type: Surface Mount
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

The LMP8640HVMKX-F/NOPB differs from its substitute only in packaging format (Tape & Reel vs. Cut Tape & Digi-Reel®) and product lifecycle status. All electrical and thermal specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (LMP8640HVMKX-F/NOPB): The LMP8640HVMKX-F/NOPB is the recommended choice for new designs and ongoing production. This part maintains Active product status from Texas Instruments, ensuring long-term availability and continued manufacturing support. The Tape & Reel packaging format is optimized for high-volume automated assembly operations. Current inventory of 744 pieces supports immediate procurement requirements.

Substitute Part Selection (LMP8640HVMKE-F/NOPB): The LMP8640HVMKE-F/NOPB is electrically and mechanically equivalent and serves as a direct substitute when the primary part is unavailable. However, this part carries Last Time Buy status, indicating that Texas Instruments has announced end-of-life production. The Cut Tape & Digi-Reel® packaging format is suitable for lower-volume applications or manual assembly processes. Higher current inventory (2450 pieces) may provide short-term availability advantage, but long-term sourcing should prioritize the Active status part.

Compliance Considerations: Both parts maintain identical RoHS3 compliance and MSL ratings, ensuring regulatory and environmental compatibility across all applications. No additional qualification is required when transitioning between these two parts within the same design.

Frequently Asked Questions (FAQ)

Q: Can LMP8640HVMKE-F/NOPB be used as a direct replacement for LMP8640HVMKX-F/NOPB in production?

A: Yes. Both parts are electrically and mechanically identical. The only differences are packaging format (Tape & Reel vs. Cut Tape & Digi-Reel®) and product lifecycle status. PCB layout, schematic integration, and performance characteristics remain unchanged.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, optimized for high-speed automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging provides components on cut tape segments or alternative reel formats, typically used for lower-volume production or manual assembly. Both formats contain identical components in the same SOT-23-6 Thin package.

Q: Why is LMP8640HVMKE-F/NOPB marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has announced the end of production for this specific part number variant. Customers are advised to place final orders before the designated cutoff date. The base product LMP8640 remains available through other part number variants.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both parts have identical slew rate (1.8 V/µs), gain bandwidth product (450 kHz), supply current (2.3 mA), and operating temperature range (-40°C to 125°C). Thermal performance and electrical characteristics are equivalent.

Q: Can these parts be used interchangeably in existing designs without PCB modification?

A: Yes. Both parts use the SOT-23-6 Thin package with identical pinout and footprint. No PCB layout changes are required for substitution.

Q: What is the MSL rating and why does it matter?

A: Both parts have MSL 1 (Unlimited), meaning they have unlimited shelf life and require no special moisture control during storage or handling. This simplifies inventory management and reduces component preparation time before assembly.

Q: Which part should be specified for new designs?

A: Specify LMP8640HVMKX-F/NOPB for new designs. This part maintains Active status and ensures long-term availability and manufacturing support from Texas Instruments.