LM56CIMM Temperature Sensor Equivalent & Substitute Parts

Part Overview

The LM56CIMM is an analog temperature sensor manufactured by Texas Instruments, designed for local temperature measurement across the -40°C to 125°C range with a 6.2mV/°C output resolution. The device operates on a 2.7V to 10V supply and includes output switch functionality. As an obsolete product, identifying compatible substitute parts is essential for system redesign, production continuation, and long-term component availability planning.

Substiute Parts

LM56CIMM

Texas InstrumentsIn Stock: 3740LM56CIMM Datasheet

Current PartRFQ

LM56CIMM/NOPB

National SemiconductorIn Stock: 2268LM56CIMM/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM56CIMM are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Sensor Type: Analog, Local
• Sensing Temperature Range: -40°C ~ 125°C
• Output Type: Analog Voltage
• Supply Voltage: 2.7V ~ 10V
• Resolution: 6.2mV/°C
• Accuracy: ±3°C (±4°C)
• Features: Output Switch
• Mounting Type: Surface Mount

The LM56CIMM/NOPB qualifies as a direct substitute, maintaining identical electrical specifications and functional characteristics while differing in packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The LM56CIMM/NOPB is a direct electrical equivalent to the LM56CIMM. Both devices share identical functional specifications, electrical performance, and operating parameters. The primary distinction is product status: the LM56CIMM is obsolete, while the LM56CIMM/NOPB maintains active production status, ensuring long-term availability and supply chain continuity.

Package format differs between the two parts. The LM56CIMM uses 8-SOIC packaging, while the LM56CIMM/NOPB uses 8-TSSOP/8-MSOP packaging. PCB layout modifications are required to accommodate the different package footprints. Both devices comply with identical export classifications (EAR99) and tariff codes (8542.39.0001).

For new designs or production continuation, the LM56CIMM/NOPB is the appropriate selection due to its active product status and guaranteed availability.

Frequently Asked Questions (FAQ)

Q: Can the LM56CIMM/NOPB directly replace the LM56CIMM without circuit modifications?

A: Electrical substitution is direct. However, PCB layout changes are required due to package format differences. The LM56CIMM uses 8-SOIC packaging while the LM56CIMM/NOPB uses 8-TSSOP/8-MSOP packaging. Pin configurations must be verified against the respective datasheets before PCB redesign.

Q: What is the primary reason to substitute the LM56CIMM?

A: The LM56CIMM is classified as obsolete. The LM56CIMM/NOPB provides an active, production-supported alternative with identical electrical specifications.

Q: Are there compliance or certification differences between these parts?

A: Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. No compliance differences exist between the two devices.

Q: What are the package dimension differences?

A: The LM56CIMM uses 8-SOIC with 0.154" (3.90mm) width. The LM56CIMM/NOPB uses 8-TSSOP/8-MSOP with 0.118" (3.00mm) width. The substitute package is narrower, requiring PCB footprint adjustment.

Q: Do both parts operate across the same temperature range?

A: Yes. Both devices operate from -40°C to 125°C with identical 6.2mV/°C resolution and ±3°C (±4°C) accuracy specifications.