LM86CIM Temperature Sensor Equivalent & Substitute Parts

Part Overview

The LM86CIM is a digital temperature sensor manufactured by Texas Instruments, designed for local and remote temperature monitoring applications. It operates across a 0°C to 85°C sensing range with 7-bit local and 10-bit remote resolution, communicating via SMBus interface. The device is classified as "Not For New Designs," indicating it has reached end-of-life status. This obsolescence necessitates identification of functionally equivalent substitute components that maintain compatibility with existing system architectures while meeting current design requirements.

Substiute Parts

LM86CIM

Texas InstrumentsIn Stock: 1674LM86CIM Datasheet

Current PartRFQ

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 eligibility for the LM86CIM is determined by the following critical parameters:

Package Compatibility: All substitute parts must use 8-SOIC surface mount packaging to ensure PCB footprint compatibility without layout modifications.

Communication Protocol: SMBus or I2C/SMBus compatibility is required to maintain firmware and software interface compatibility.

Voltage Supply Range: The substitute must operate within or encompass the 3V to 3.6V supply range of the original design.

Sensor Configuration: Local/remote dual-channel temperature sensing capability must be preserved.

Temperature Sensing Range: The substitute must cover the application's required temperature monitoring window. Substitutes with extended ranges (such as -40°C to 125°C) are acceptable as they provide broader operational capability.

Resolution: Minimum 7-bit local and 10-bit remote resolution maintains measurement precision equivalence.

The following substitute parts meet these criteria:

• ADM1032ARZ-REEL (Analog Devices Inc.): Active product status, extended supply voltage range, improved accuracy
• SA56004AD,118 (NXP USA Inc.): Active product status, extended temperature range, 10-bit resolution, RoHS3 compliant
• SA56004CD,118 (NXP Semiconductors): Active product status, extended temperature range, 10-bit resolution, RoHS3 compliant
• SA56004ED,118 (NXP USA Inc.): Active product status, extended temperature range, 10-bit resolution, RoHS3 compliant

Parameter Comparison

Engineering Selection Recommendations

For Active Product Status Requirement: All four substitute parts carry Active product status, ensuring long-term availability and continued manufacturer support. This addresses the obsolescence of the LM86CIM, which is designated "Not For New Designs."

For Regulatory Compliance: The SA56004 series (SA56004AD,118, SA56004CD,118, SA56004ED,118) are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The ADM1032ARZ-REEL provides REACH unaffected status. These certifications are critical for applications subject to EU directives or equivalent regional regulations.

For Extended Supply Voltage Tolerance: The ADM1032ARZ-REEL and SA56004 series support 3V to 5.5V supply voltage, providing greater design margin compared to the LM86CIM's 3V to 3.6V specification. This extended range accommodates voltage regulation tolerances and system variations.

For Extended Temperature Range: The SA56004 series extends the sensing range to -40°C to 125°C, enabling deployment in wider environmental conditions. The ADM1032ARZ-REEL covers 0°C to 100°C locally and 0°C to 120°C remotely, suitable for moderate temperature extension requirements.

For Improved Accuracy: The ADM1032ARZ-REEL achieves ±1°C accuracy at 25°C, and the SA56004 series achieves ±2°C accuracy, both superior to the LM86CIM's ±3°C specification.

For 10-Bit Resolution: The SA56004 series provides 10-bit resolution for both local and remote channels, compared to the LM86CIM's 7-bit local resolution, enabling finer temperature discrimination.

Frequently Asked Questions (FAQ)

Q: Can the ADM1032ARZ-REEL directly replace the LM86CIM without firmware changes?

A: The ADM1032ARZ-REEL uses SMBus communication protocol identical to the LM86CIM and maintains the same 8-SOIC package footprint. However, the ADM1032ARZ-REEL provides only 7-bit resolution compared to the LM86CIM's 10-bit remote resolution. Firmware must be evaluated to confirm compatibility with the reduced remote resolution. The SMBus command set and register structure require verification against the respective datasheets.

Q: What is the primary advantage of the SA56004 series over the LM86CIM?

A: The SA56004 series (SA56004AD,118, SA56004CD,118, SA56004ED,118) offers multiple advantages: Active product status ensuring long-term availability, RoHS3 compliance and REACH unaffected status for regulatory alignment, extended operating temperature range (-40°C to 125°C), improved accuracy (±2°C), and 10-bit resolution for both local and remote channels. These devices are suitable for new designs and provide superior environmental compliance.

Q: Are there packaging differences between the LM86CIM and substitute parts?

A: All substitute parts use 8-SOIC surface mount packaging with identical 0.154" (3.90mm) width specification. PCB footprints are compatible without layout modifications. Tape & Reel packaging for the SA56004 series differs from the LM86CIM's Tube packaging, but this affects only procurement and handling, not electrical or mechanical compatibility.

Q: Which substitute part is recommended for applications requiring the widest temperature monitoring range?

A: The SA56004 series (SA56004AD,118, SA56004CD,118, SA56004ED,118) provides the widest temperature range at -40°C to 125°C for both local and remote sensing. These parts are functionally identical and differ only in manufacturer designation. Selection among them depends on supplier availability and lead time.

Q: Is the ADM1032ARZ-REEL suitable for applications currently using the LM86CIM?

A: The ADM1032ARZ-REEL is suitable for applications where the extended supply voltage range (3V to 5.5V) and improved accuracy (±1°C) provide design benefits. However, the reduced remote resolution (7-bit versus 10-bit) and narrower temperature range (0°C to 120°C remote) must be evaluated against application requirements. SMBus protocol compatibility is confirmed, but register-level command compatibility requires datasheet cross-reference.

Q: What is the difference between SA56004AD,118, SA56004CD,118, and SA56004ED,118?

A: These three NXP parts are functionally equivalent with identical electrical specifications, temperature ranges, resolution, and accuracy. The designations reflect different manufacturing batches or qualification levels. All three are Active products with RoHS3 compliance and REACH unaffected status. Selection is based on supplier availability and inventory.

Q: Can I use the SA56004 series in applications with 3V to 3.6V supply voltage?

A: Yes. The SA56004 series supports 3V to 5.5V supply voltage, which encompasses the LM86CIM's 3V to 3.6V range. The extended upper limit provides additional design margin without affecting operation at lower voltages.