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Alternatives to Texas Instruments LMP8640MKE-H/NOPB

Texas Instruments LMP8640MKE-H/NOPB and its qualified second sources, compared on form, fit and function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

Equivalent and substitute parts for Texas Instruments LMP8640MKE-H/NOPB

LMP8640MKE-H/NOPB compared against its qualified second sources
LMP8640MKE-H/NOPBTexas InstrumentsLMP8640MKX-H/NOPBTexas InstrumentsINA181A3IDBVTTexas Instruments
FFF CompatibilityThe package footprint and pinout are identical to the original device.The package style is the identical 6-pin Thin SOT-23 (DDC).All electrical specifications, including the 100 V/V gain and supply ranges, are identical.Pinout matches perfectly, but Pin 5 is a Reference (REF) pin that must be tied to GND or a reference voltage (whereas on the original part it was NC).Standard 6-pin SOT-23 package with identical mechanical dimensions.Maximum supply voltage is limited to 5.5 V (vs 12 V) and maximum common-mode voltage is limited to 26 V (vs 42 V).
AI Summary

LMP8640MKE-H/NOPB by Texas Instruments: Current Sense Amplifier 1 Circuit SOT-23-THIN.

This is the active large-reel ordering variant of the exact same silicon. It offers identical specifications, gain, and pinout, making it a seamless drop-in replacement.

  • Identical electrical characteristics and pinout assignment
  • Active lifecycle status ensuring long-term supply viability
  • Direct manufacturer replacement part from the same series
  • Requires ordering in larger reel quantities (3000 pcs) vs the obsolete sample reel (250 pcs).

This active current-sense amplifier is pin-compatible provided Pin 5 (NC on original) can be tied to Ground on the PCB to set the reference voltage. It features a lower maximum supply and common-mode limit, requiring application verification.

  • SOT-23-6 package with a highly compatible pinout assignment
  • Significantly lower operating supply current (260 uA vs 2.3 mA)
  • Lower cost and widely available active part
  • Lower maximum supply voltage limit of 5.5 V compared to 12 V on the original device.
  • Lower input common-mode voltage range limit of 26 V compared to 42 V on the original device.
Lifecycle StatusObsoleteActiveActive
Market AvailabilityDiscontinuedNon-stockIn stock
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Related parts

PartMarket availabilityLifecycleAlternatives available
LMP8640MK-H/NOPBTexas InstrumentsIn stockObsolete3Alternatives availableSee Alternatives
LMP8640MKX-H/NOPBTexas InstrumentsNon-stockActive4Alternatives availableSee Alternatives
LM8261M5/NOPBTexas InstrumentsIn stockObsolete4Alternatives availableSee Alternatives
LMP7701MF/NOPBTexas InstrumentsIn stockActive4Alternatives availableSee Alternatives
LM78L05ACM/NOPBTexas InstrumentsIn stockActive10Alternatives availableSee Alternatives
LMC6084AIM/NOPBTexas InstrumentsIn stockObsolete10Alternatives availableSee Alternatives

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