LM1815N/NOPB Equivalent & Substitute Parts

Part Overview

The LM1815N/NOPB is an adaptive sensor interface integrated circuit manufactured by Texas Instruments, housed in a 14-DIP through-hole package. This component functions as a sensor interface with logic-level input and output, drawing 6 mA supply current across an operating temperature range of -40°C to 125°C. The product is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

LM1815N/NOPB

Texas InstrumentsIn Stock: 1076LM1815N/NOPB Datasheet

Current PartRFQ

LM1815M/NOPB

Texas InstrumentsIn Stock: 905LM1815M/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM1815N/NOPB is determined by equivalence in the following critical parameters:

• Base product number (LM1815) ensures identical functional architecture and pin configuration
• Identical supply current specification (6 mA) confirms electrical compatibility
• Matching operating temperature range (-40°C ~ 125°C) ensures thermal compatibility
• Equivalent input/output type (Logic) maintains signal interface compatibility
• Matching RoHS3 compliance and REACH unaffected status ensures regulatory alignment

The LM1815M/NOPB qualifies as a manufacturer-recommended substitute based on these parameters. The primary difference is packaging format: the substitute uses surface-mount 14-SOIC technology rather than through-hole 14-DIP, requiring PCB layout and assembly process modifications.

Parameter Comparison

Engineering Selection Recommendations

Both the LM1815N/NOPB and LM1815M/NOPB share identical functional specifications, electrical characteristics, and regulatory compliance status. Selection between these parts depends on PCB assembly technology and design constraints:

The LM1815N/NOPB (14-DIP through-hole) is suitable for through-hole assembly processes and applications requiring manual rework capability.

The LM1815M/NOPB (14-SOIC surface-mount) is suitable for surface-mount assembly processes and applications requiring higher component density.

Both parts maintain ROHS3 compliance and REACH unaffected status, confirming regulatory alignment for current procurement requirements. The obsolete product status of both parts indicates that long-term availability may be limited; inventory verification is recommended prior to design commitment.

Frequently Asked Questions (FAQ)

Q: Can the LM1815M/NOPB directly replace the LM1815N/NOPB on an existing PCB?

A: No. The LM1815M/NOPB uses 14-SOIC surface-mount packaging while the LM1815N/NOPB uses 14-DIP through-hole packaging. PCB layout and footprint modifications are required. Pin configuration and electrical function are identical.

Q: Are there electrical performance differences between these parts?

A: No. Both parts share identical supply current (6 mA), operating temperature range (-40°C ~ 125°C), input/output types (Logic), and functional architecture based on the common LM1815 base product number.

Q: What is the significance of the base product number LM1815?

A: The base product number indicates the core functional design. All variants of LM1815 share the same adaptive sensor interface architecture and pin configuration, with differences limited to packaging format and mounting technology.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the LM1815N/NOPB and LM1815M/NOPB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for component procurement.

Q: Why are both parts classified as obsolete?

A: Obsolete status indicates that Texas Instruments has discontinued active production and support for these product lines. Current inventory availability is limited to existing stock from authorized distributors.