LM86CIMM Temperature Sensor - Equivalent & Substitute Parts

Part Overview

The LM86CIMM 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 and 10-bit remote resolution, and operates on 3V to 3.6V supply voltage. The LM86CIMM is classified as "Not For New Designs," indicating obsolescence in the product lifecycle. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance.

Key Parameters

Parameter	LM86CIMM
Manufacturer	Texas Instruments
Sensor Type	Digital, Local/Remote
Sensing Temperature - Local	0°C ~ 85°C
Sensing Temperature - Remote	0°C ~ 85°C
Output Type	SMBus
Voltage - Supply	3V ~ 3.6V
Resolution	7 b (Local), 10 b (Remote)
Accuracy	±3°C
Operating Temperature	0°C ~ 125°C
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
Features	One-Shot, Output Switch, Programmable Limit, Shutdown Mode, Standby Mode
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LM86CIMM are grouped based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Output Type: SMBus (mandatory for protocol compatibility)
Mounting Type: Surface Mount, 8-pin package (8-TSSOP or 8-MSOP)
Sensor Type: Digital, Local/Remote
Supply Voltage Range: Must support 3V ~ 3.6V minimum
Features: One-Shot, Output Switch, Programmable Limit, Standby Mode

Substitution Categories:

Category 1 - Direct Equivalent (Same Manufacturer, Different Packaging) LM86CIMM/NOPB is the tape and reel variant of the main part, offering identical electrical specifications with different packaging format.

Category 2 - Extended Temperature Range Substitutes ADT7461AARMZ-R and ADT7461ARMZ-R7 (onsemi) extend the operating temperature range to -40°C ~ 120°C while maintaining SMBus compatibility, 8-pin MSOP package, and core feature set. These parts support the original supply voltage range and provide enhanced accuracy (±1°C to ±2.5°C).

Category 3 - Enhanced Resolution Substitutes EMC1072-1-ACZL-TR, EMC1072-A-ACZL-TR, EMC1402-1-ACZL-TR, EMC1402-2-ACZL-TR, EMC1402-3-ACZL-TR, and EMC1402-4-ACZL-TR (Microchip Technology) provide 11-bit resolution compared to the LM86CIMM's 7/10-bit split resolution. These parts extend the operating temperature to -40°C ~ 125°C, maintain SMBus output, 8-pin MSOP/TSSOP packages, and support 3V ~ 3.6V supply voltage.

Category 4 - Manufacturer Alternative ADM1032ARMZ-REEL (Analog Devices Inc.) represents an alternative manufacturer solution for remote and local temperature sensing with SMBus interface.

Parameter Comparison

Parameter	LM86CIMM	LM86CIMM/NOPB	ADT7461AARMZ-R	ADT7461ARMZ-R7	EMC1072-1-ACZL-TR	EMC1402-1-ACZL-TR
Manufacturer	Texas Instruments	Texas Instruments	onsemi	onsemi	Microchip Technology	Microchip Technology
Sensor Type	Digital, Local/Remote	Digital, Local/Remote	Digital, Local/Remote	Digital, Local/Remote	Digital, Local/Remote	Digital, Local/Remote
Sensing Temperature - Local	0°C ~ 85°C	0°C ~ 85°C	-40°C ~ 120°C	-40°C ~ 120°C	-40°C ~ 125°C	-40°C ~ 125°C
Sensing Temperature - Remote	0°C ~ 85°C	0°C ~ 85°C	-64°C ~ 191°C	-55°C ~ 150°C	-64°C ~ 191°C	-64°C ~ 191°C
Output Type	SMBus	SMBus	SMBus	SMBus	SMBus	SMBus
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 5.5V	3V ~ 3.6V	3V ~ 3.6V
Resolution	7 b (Local), 10 b (Remote)	7 b (Local), 10 b (Remote)	8 b	8 b	11 b	11 b
Accuracy	±3°C	±3°C	±1°C (±2.5°C)	±3°C	±1°C (±2°C)	±1°C (±2°C)
Operating Temperature	0°C ~ 125°C	0°C ~ 125°C	-40°C ~ 120°C	-40°C ~ 120°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Features	One-Shot, Output Switch, Programmable Limit, Shutdown Mode, Standby Mode	One-Shot, Output Switch, Programmable Limit, Shutdown Mode, Standby Mode	One-Shot, Output Switch, Programmable Limit, Standby Mode	One-Shot, Output Switch, Programmable Limit, Standby Mode	One-Shot, Output Switch, Programmable Limit, Standby Mode	One-Shot, Output Switch, Programmable Limit, Standby Mode
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): LM86CIMM/NOPB serves as the direct equivalent with tape and reel packaging. This part maintains all electrical and thermal specifications of the original LM86CIMM while offering ROHS3 compliance and active product status, making it suitable for immediate substitution in existing designs.

For Extended Temperature Range Applications: ADT7461AARMZ-R and ADT7461ARMZ-R7 are recommended when designs require operation beyond the 0°C ~ 85°C local sensing range of the LM86CIMM. Both onsemi parts extend local sensing to -40°C ~ 120°C and maintain SMBus compatibility. ADT7461ARMZ-R7 additionally supports supply voltage up to 5.5V, providing greater design flexibility. Both parts carry ROHS3 compliance and active product status.

For Enhanced Resolution Requirements: EMC1072 and EMC1402 series (Microchip Technology) provide 11-bit resolution versus the LM86CIMM's 7/10-bit split resolution. These parts extend operating temperature to -40°C ~ 125°C and deliver improved accuracy (±1°C to ±2°C). All variants maintain 3V ~ 3.6V supply compatibility and SMBus interface. EMC1402 variants show higher inventory availability (911 to 60,142 units) compared to EMC1072 variants (925 to 5,248 units). All carry ROHS3 compliance and active product status.

For Compliance-Critical Designs: All substitute parts listed carry ROHS3 compliance and REACH unaffected status, addressing regulatory requirements that the original LM86CIMM does not meet. Product status transitions from "Not For New Designs" (LM86CIMM) to "Active" for all recommended substitutes, ensuring long-term supply chain viability.

Frequently Asked Questions (FAQ)

Q: Can LM86CIMM/NOPB be used as a direct drop-in replacement? A: Yes. LM86CIMM/NOPB is the tape and reel packaging variant of LM86CIMM with identical electrical specifications, SMBus interface, 8-pin MSOP package, and feature set. The primary difference is packaging format and improved RoHS compliance status.

Q: What is the key difference between onsemi ADT7461 variants and the LM86CIMM? A: ADT7461AARMZ-R and ADT7461ARMZ-R7 extend the local sensing temperature range to -40°C ~ 120°C compared to LM86CIMM's 0°C ~ 85°C. Both maintain SMBus output, 8-pin MSOP package, and 3V ~ 3.6V supply voltage. ADT7461ARMZ-R7 additionally supports up to 5.5V supply voltage. Resolution is 8-bit versus LM86CIMM's 7/10-bit split.

Q: How do Microchip EMC1072 and EMC1402 series differ from LM86CIMM? A: EMC1072 and EMC1402 series provide 11-bit resolution compared to LM86CIMM's 7/10-bit split resolution. Operating temperature extends to -40°C ~ 125°C. Both maintain SMBus interface, 8-pin MSOP/TSSOP packages, and 3V ~ 3.6V supply voltage. Accuracy improves to ±1°C (±2°C) versus LM86CIMM's ±3°C. EMC1402 variants show significantly higher inventory availability.

Q: Are all substitute parts compatible with existing LM86CIMM PCB layouts? A: Yes. All substitute parts use identical 8-pin MSOP or 8-TSSOP packages with 0.118" (3.00mm) width, ensuring mechanical and electrical compatibility with existing LM86CIMM footprints. SMBus interface compatibility is maintained across all substitutes.

Q: Which substitute offers the best compliance profile? A: All recommended substitutes carry ROHS3 compliance and REACH unaffected status. The LM86CIMM is RoHS non-compliant and REACH affected. For compliance-critical applications, any of the listed substitutes provides superior regulatory alignment.

Q: What is the inventory status of substitute parts? A: EMC1402-1-ACZL-TR shows the highest availability at 60,142 units. ADM1032ARMZ-REEL provides 25,077 units. ADT7461ARMZ-R7 offers 15,400 units. Availability varies by variant and packaging format. Consult current inventory for project-specific requirements.

Q: Can ADT7461ARMZ-R7 operate at higher supply voltages than LM86CIMM? A: Yes. ADT7461ARMZ-R7 supports 3V ~ 5.5V supply voltage compared to LM86CIMM's 3V ~ 3.6V range. This provides design flexibility for systems with variable supply rails. Other substitutes maintain the 3V ~ 3.6V specification of the original part.

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