LM1815M Equivalent & Substitute Parts

Part Overview

The LM1815M is an adaptive sense amplifier interface integrated circuit manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This component functions as a sensor interface with logic-level input and output capabilities, drawing 6 mA supply current across an operating temperature range of -40°C to 125°C. The LM1815M is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

LM1815M

Texas InstrumentsIn Stock: 2159LM1815M Datasheet

Current PartRFQ

LM1815M/NOPB

Texas InstrumentsIn Stock: 905LM1815M/NOPB Datasheet

DirectRFQ

LM1815MX/NOPB

Texas InstrumentsIn Stock: 1373LM1815MX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM1815M is determined by strict equivalence across the following critical parameters:

• Functional classification as a sensor interface amplifier
• Logic-level input and output signal types
• Supply current specification of 6 mA
• Operating temperature range of -40°C to 125°C
• 14-SOIC surface mount package with 0.154" (3.90mm) width
• ROHS3 compliance and MSL Level 1 rating
• Base product number LM1815 lineage

The substitute parts identified below maintain full electrical and mechanical compatibility with the LM1815M across all specified parameters. Differences in product status and packaging format do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both LM1815M/NOPB and LM1815MX/NOPB are electrically and mechanically equivalent to the LM1815M across all specified functional parameters. Selection between these alternatives should be based on the following factors:

LM1815M/NOPB maintains obsolete product status consistent with the original LM1815M, with inventory availability of 829 units in tube packaging. This variant is suitable for direct replacement in existing designs where component sourcing from legacy stock is acceptable.

LM1815MX/NOPB is classified as active product status, indicating ongoing manufacturer support and continued availability. This variant is supplied in Tape & Reel (TR) packaging with 1303 units in inventory. The active status provides assurance of long-term component availability and is the preferred selection for new designs and production applications requiring sustained supply chain reliability.

Both parts carry identical ROHS3 compliance and REACH unaffected status, confirming regulatory equivalence for applications subject to environmental and hazardous substance restrictions.

Frequently Asked Questions (FAQ)

Q: Are LM1815M/NOPB and LM1815MX/NOPB direct pin-for-pin replacements for the LM1815M?

A: Yes. All three parts share identical 14-SOIC package geometry, pin configuration, and electrical specifications. No circuit modifications are required for substitution.

Q: What is the difference between tube and Tape & Reel packaging?

A: Tube packaging is used for manual component handling and lower-volume applications. Tape & Reel packaging is designed for automated assembly equipment and high-volume production. Both formats contain the same component; packaging selection depends on assembly process requirements.

Q: Why is LM1815MX/NOPB recommended over LM1815M/NOPB?

A: LM1815MX/NOPB carries active product status, indicating manufacturer commitment to continued production and supply. LM1815M/NOPB is obsolete, meaning Texas Instruments no longer manufactures this variant. For new designs and long-term applications, active product status provides supply chain certainty.

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

A: No. All three variants maintain identical supply current (6 mA), operating temperature range (-40°C to 125°C), input/output logic types, and sensor interface functionality.

Q: Do these parts meet RoHS and REACH compliance requirements?

A: Yes. All three variants are ROHS3 compliant and REACH unaffected, confirming compliance with environmental and hazardous substance regulations applicable to electronic components.

Q: Can LM1815MX/NOPB be used in applications originally designed for LM1815M?

A: Yes. Electrical and mechanical equivalence across all specified parameters ensures functional interchangeability without design modifications or performance degradation.