LM86CIMX Temperature Sensor Equivalent & Substitute Parts

Part Overview

The LM86CIMX is a digital temperature sensor manufactured by Texas Instruments, designed for local and remote temperature monitoring across the 0°C to 85°C range. This component features SMBus output, 7-bit local resolution, and 10-bit remote resolution, housed in an 8-SOIC surface mount package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Substiute Parts

LM86CIMX

Texas InstrumentsIn Stock: 6198LM86CIMX Datasheet

Current PartRFQ

LM86CIMX/NOPB

Texas InstrumentsIn Stock: 3307LM86CIMX/NOPB Datasheet

DirectRFQ

LM89CIMX/NOPB

National SemiconductorIn Stock: 3568LM89CIMX/NOPB Datasheet

DirectRFQ

ADM1032ARZ-REEL

Analog Devices Inc.In Stock: 7590ADM1032ARZ-REEL Datasheet

MFR RecommendedRFQ

SA56004AD,118

NXP USA Inc.In Stock: 1119SA56004AD,118 Datasheet

MFR RecommendedRFQ

SA56004CD,118

NXP SemiconductorsIn Stock: 2279SA56004CD,118 Datasheet

MFR RecommendedRFQ

SA56004ED,118

NXP USA Inc.In Stock: 2004SA56004ED,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM86CIMX is determined by the following critical parameters:

• Package Compatibility: 8-SOIC form factor (0.154", 3.90mm Width)
• Sensor Type: Digital, Local/Remote temperature monitoring capability
• Output Interface: SMBus or I2C/SMBus compatibility
• Supply Voltage Range: Minimum 3V operation required
• Resolution: 7-bit local and 10-bit remote resolution preferred
• Accuracy: ±3°C or better
• Mounting Type: Surface Mount

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (Active Status): Parts with identical or superior specifications across all critical parameters, maintaining full functional compatibility.

Category 2 - Extended Range Substitutes (Active Status): Parts with enhanced temperature range capabilities and improved accuracy, suitable for applications requiring broader operating conditions.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

LM86CIMX/NOPB is the primary direct equivalent. This part maintains identical electrical specifications and package form factor while offering active product status and ROHS3 compliance. The /NOPB designation indicates lead-free construction and is the recommended choice for new designs and legacy system support.

LM89CIMX/NOPB provides equivalent functionality with active status. As a National Semiconductor product, it shares identical sensor specifications and output characteristics with the original LM86CIMX.

For Extended Temperature Range Applications

SA56004AD,118, SA56004CD,118, and SA56004ED,118 (NXP Semiconductors) extend the operating temperature range to -40°C ~ 125°C for both local and remote sensing. These parts offer improved accuracy (±2°C) and 10-bit resolution. The expanded supply voltage range (3V ~ 5.5V) provides additional design flexibility. All three variants maintain 8-SOIC packaging and I2C/SMBus compatibility.

For Enhanced Accuracy Requirements

ADM1032ARZ-REEL (Analog Devices Inc.) delivers ±1°C accuracy with extended remote temperature sensing to 120°C. This part is suitable for applications requiring superior thermal measurement precision while maintaining SMBus interface compatibility and 8-SOIC packaging.

Compliance Considerations

The original LM86CIMX is RoHS non-compliant. All active substitute parts listed are ROHS3 compliant, meeting current environmental and regulatory requirements for new manufacturing and procurement.

Frequently Asked Questions (FAQ)

Q: Can LM86CIMX/NOPB be used as a direct replacement for LM86CIMX?

A: Yes. LM86CIMX/NOPB is functionally identical to the obsolete LM86CIMX, with identical sensor specifications, output type, resolution, and accuracy. The /NOPB designation indicates lead-free construction and RoHS3 compliance. Pin configuration and package dimensions are unchanged.

Q: What is the difference between the NXP SA56004 variants (AD, CD, ED)?

A: All three SA56004 variants share identical electrical specifications and temperature ranges. The letter designation (A, C, E) represents different temperature grades or manufacturing batches. Selection among these variants depends on specific procurement requirements and availability.

Q: Are the NXP SA56004 parts compatible with systems designed for LM86CIMX?

A: The SA56004 series maintains 8-SOIC packaging and I2C/SMBus interface compatibility. However, the extended temperature range (-40°C ~ 125°C) and improved accuracy (±2°C) represent specification enhancements. Firmware or software verification is recommended to confirm compatibility with existing system implementations, particularly regarding temperature range handling and accuracy expectations.

Q: Why does ADM1032ARZ-REEL have different resolution specifications?

A: The ADM1032ARZ-REEL provides 7-bit resolution compared to the 10-bit remote resolution of the LM86CIMX. This represents a functional difference. Selection of this part should be based on whether the application requires the enhanced remote temperature resolution of the original design.

Q: What supply voltage range should be used for substitute parts?

A: The original LM86CIMX operates at 3V ~ 3.6V. Direct equivalents (LM86CIMX/NOPB, LM89CIMX/NOPB) maintain this range. Extended-range substitutes (SA56004 series, ADM1032ARZ-REEL) support 3V ~ 5.5V operation. Existing system designs operating at 3V ~ 3.6V are compatible with all listed substitutes.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in 8-SOIC surface mount packaging, maintaining mechanical compatibility with the original LM86CIMX. Packaging options (Cut Tape, Digi-Reel, Tape & Reel, Bulk) vary by manufacturer and distributor. Verify specific packaging availability with component suppliers based on procurement requirements.