LMP8640MKE-F/NOPB Equivalent & Substitute Parts

Part Overview

The LMP8640MKE-F/NOPB is a current sense amplifier manufactured by Texas Instruments, designed for single-circuit current sensing applications in SOT-23-THIN package. This linear amplifier operates across a 2.7 V to 12 V supply range with a slew rate of 1.8 V/µs and gain bandwidth product of 450 kHz. The device is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications requiring current sensing functionality.

Substiute Parts

LMP8640MKE-F/NOPB

Texas InstrumentsIn Stock: 2786LMP8640MKE-F/NOPB Datasheet

Current PartRFQ

LMP8640MK-F/NOPB

Texas InstrumentsIn Stock: 4550LMP8640MK-F/NOPB Datasheet

DirectRFQ

LMP8640MKX-F/NOPB

Texas InstrumentsIn Stock: 3183LMP8640MKX-F/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMP8640MKE-F/NOPB is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish valid substitutes:

Electrical Parameter Equivalence:

• Amplifier Type: Current Sense (single circuit)
• Slew Rate: 1.8 V/µs
• Gain Bandwidth Product: 450 kHz
• Current - Input Bias: 13 µA
• Voltage - Input Offset: 900 mV
• Current - Supply: 2.3 mA
• Voltage - Supply Span: 2.7 V to 12 V
• Operating Temperature Range: -40°C to 125°C

Mechanical Parameter Equivalence:

• Package / Case: SOT-23-6 Thin (TSOT-23-6)
• Mounting Type: Surface Mount
• Supplier Device Package: SOT-23-THIN

Compliance Equivalence:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

All identified substitute parts maintain identical electrical specifications and package configuration. Packaging format (Tape & Reel versus Cut Tape & Digi-Reel) represents the only variable parameter and does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

LMP8640MK-F/NOPB (Cut Tape & Digi-Reel Packaging)

This substitute maintains identical electrical and mechanical specifications to the LMP8640MKE-F/NOPB. The primary distinction is packaging format: Cut Tape and Digi-Reel delivery versus Tape & Reel. Both formats are suitable for automated assembly processes. This part carries Last Time Buy status, consistent with the main part. Selection of this substitute is appropriate when Cut Tape or Digi-Reel packaging accommodates procurement and assembly workflows.

LMP8640MKX-F/NOPB (Tape & Reel Packaging, Active Status)

This substitute provides identical electrical and mechanical specifications with Tape & Reel packaging matching the main part format. The LMP8640MKX-F/NOPB carries Active product status, indicating ongoing manufacturing and long-term availability. This part is the preferred substitute for applications requiring extended supply chain continuity and future component availability. All compliance certifications (ROHS3, REACH Unaffected) are maintained.

Both substitutes are fully compatible with designs specified for the LMP8640MKE-F/NOPB without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can LMP8640MK-F/NOPB and LMP8640MKX-F/NOPB be used interchangeably with LMP8640MKE-F/NOPB?

A: Yes. All three parts are electrically and mechanically identical. They share the same amplifier type, circuit count, slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, supply voltage range, operating temperature range, package type (SOT-23-6 Thin), and compliance certifications. Substitution requires no circuit changes or design re-qualification.

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

A: Packaging format affects component delivery and handling during assembly. Tape & Reel (TR) provides components on continuous carrier tape suitable for high-volume automated pick-and-place assembly. Cut Tape (CT) and Digi-Reel provide smaller quantities on cut tape segments, suitable for lower-volume production or mixed-component assembly. Both formats contain identical components with identical electrical performance.

Q: Why is LMP8640MKX-F/NOPB recommended over LMP8640MKE-F/NOPB?

A: The LMP8640MKX-F/NOPB carries Active product status, indicating Texas Instruments continues manufacturing this part. The LMP8640MKE-F/NOPB is Last Time Buy, meaning production has ended. For new designs or long-term production requirements, LMP8640MKX-F/NOPB ensures sustained component availability and supply chain stability.

Q: Are all three parts RoHS3 compliant?

A: Yes. LMP8640MKE-F/NOPB, LMP8640MK-F/NOPB, and LMP8640MKX-F/NOPB are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are REACH Unaffected.

Q: Can these parts be used in designs requiring -40°C to 125°C operation?

A: Yes. All three substitute parts operate across the full -40°C to 125°C temperature range with identical performance specifications.

Q: What is the supply voltage range for these current sense amplifiers?

A: All three parts operate with supply voltage spanning 2.7 V minimum to 12 V maximum, enabling use in both low-voltage and standard industrial applications.