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LM86CIMMX Temperature Sensor Equivalent & Substitute Parts
Part Overview
The LM86CIMMX is a digital temperature sensor manufactured by Texas Instruments, designed for local and remote temperature monitoring applications. This device operates across a 0°C to 85°C sensing range with 7-bit local and 10-bit remote resolution, communicating via SMBus interface. The LM86CIMMX is classified as obsolete, necessitating identification of functionally equivalent substitute components for new designs and ongoing production requirements. Active alternatives with enhanced specifications and current manufacturing status are available from multiple semiconductor manufacturers.
Substiute Parts
Key Parameters
| Parameter | LM86CIMMX |
|---|---|
| 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 |
| Part Status | Obsolete |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitute parts for the LM86CIMMX are classified based on strict parameter compatibility within the digital temperature sensor category. The primary substitution criteria are:
Critical Compatibility Parameters:
- Output Type: SMBus (mandatory match)
- Mounting Type: Surface Mount (mandatory match)
- Package / Case: 8-TSSOP or 8-MSOP form factor (mandatory match)
- Voltage Supply Range: Must encompass or exceed 3V ~ 3.6V minimum requirement
- Sensor Type: Digital, Local/Remote (mandatory match)
Functional Equivalence Parameters:
- Local and Remote temperature sensing capability
- Programmable limit and shutdown mode features
- One-shot and standby mode operation
Substitute parts are grouped into two categories:
Category 1: Direct Functional Equivalents (Active Status) Parts that maintain identical or superior specifications within the LM86CIMMX operating envelope while offering active manufacturing status and improved compliance certifications.
Category 2: Extended-Range Equivalents (Active Status) Parts that exceed the LM86CIMMX temperature range and resolution specifications, suitable for applications requiring broader operating conditions or enhanced accuracy.
Parameter Comparison
| Parameter | LM86CIMMX | LM86CIMMX/NOPB | ADM1032ARMZ-REEL | ADT7461AARMZ-R | ADT7461ARMZ-R7 | EMC1072-1-ACZL-TR | EMC1402-1-ACZL-TR |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Analog Devices Inc. | 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 | Digital, Local/Remote |
| Sensing Temperature - Local | 0°C ~ 85°C | 0°C ~ 85°C | Not specified | -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 | Not specified | -64°C ~ 191°C | -55°C ~ 150°C | -64°C ~ 191°C | -64°C ~ 191°C |
| Output Type | SMBus | SMBus | Not specified | SMBus | SMBus | SMBus | SMBus |
| Voltage Supply | 3V ~ 3.6V | 3V ~ 3.6V | Not specified | 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) | Not specified | 8 b | 8 b | 11 b | 11 b |
| Accuracy | ±3°C | ±3°C | Not specified | ±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 | Not specified | -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 | Not specified | 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 | Surface Mount |
| Part Status | Obsolete | Active | Active | Active | Active | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | Not specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Not specified | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) | 2 (1 Year) |
Engineering Selection Recommendations
For Direct Replacement (Identical Specifications):
LM86CIMMX/NOPB is the primary direct substitute, offering identical electrical and thermal specifications to the obsolete LM86CIMMX. This part maintains the same 0°C ~ 85°C local sensing range, 7-bit local and 10-bit remote resolution, and ±3°C accuracy. The critical advantage is active manufacturing status with ROHS3 compliance, addressing regulatory requirements for new production. Both parts utilize 8-VSSOP packaging and SMBus communication protocol. This substitute is recommended when design specifications cannot accommodate extended temperature ranges or enhanced resolution.
For Extended-Range Applications:
EMC1402 series (EMC1402-1-ACZL-TR, EMC1402-2-ACZL-TR, EMC1402-3-ACZL-TR, EMC1402-4-ACZL-TR) manufactured by Microchip Technology provides superior specifications within the same 8-MSOP package footprint. These devices extend operating temperature to -40°C ~ 125°C with 11-bit resolution and ±1°C to ±2°C accuracy. All variants maintain 3V ~ 3.6V supply voltage and SMBus interface compatibility. Packaging variants (Tape & Reel or Cut Tape) accommodate different procurement workflows. ROHS3 compliance and MSL ratings of 1 to 2 support modern manufacturing requirements.
For Voltage-Flexible Applications:
ADT7461ARMZ-R7 manufactured by onsemi extends supply voltage tolerance to 3V ~ 5.5V while maintaining SMBus interface and 8-MSOP package compatibility. This device operates across -40°C ~ 120°C with 8-bit resolution and ±3°C accuracy. The expanded voltage range accommodates systems with variable power supply conditions. ROHS3 compliance and MSL 1 rating support production environments with stringent environmental controls.
For Maximum Accuracy Requirements:
ADT7461AARMZ-R and EMC1072-1-ACZL-TR both deliver ±1°C accuracy with extended temperature ranges. ADT7461AARMZ-R provides -40°C ~ 120°C operation with 8-bit resolution in 8-MSOP package. EMC1072-1-ACZL-TR extends to -40°C ~ 125°C with 11-bit resolution in 8-MSOP package. Both maintain SMBus communication and 3V ~ 3.6V supply voltage. Selection between these depends on required temperature ceiling and resolution precision.
Compliance Considerations:
All recommended substitutes achieve ROHS3 compliance, addressing regulatory requirements for electronics manufacturing. The LM86CIMMX/NOPB maintains identical specifications while providing active status and compliance certification. Extended-range alternatives (EMC1402 series, EMC1072-1-ACZL-TR) offer superior compliance posture with MSL ratings appropriate for automated assembly processes.
Frequently Asked Questions (FAQ)
Q: Can LM86CIMMX/NOPB directly replace LM86CIMMX in existing designs?
A: Yes. LM86CIMMX/NOPB maintains identical electrical specifications, temperature sensing ranges, resolution, accuracy, and package form factor. The primary difference is active manufacturing status and ROHS3 compliance certification. Pin configuration and SMBus protocol compatibility are preserved.
Q: What is the primary reason to transition from LM86CIMMX to an alternative?
A: The LM86CIMMX is classified as obsolete. LM86CIMMX/NOPB provides direct functional equivalence with active manufacturing status. Extended-range alternatives (EMC1402 series, ADT7461 series, EMC1072 series) offer enhanced specifications including broader temperature ranges, higher resolution, and improved accuracy while maintaining package and interface compatibility.
Q: Are EMC1402 series parts pin-compatible with LM86CIMMX?
A: EMC1402 series devices maintain identical SMBus interface and 8-MSOP package form factor. Pin compatibility is preserved for SMBus communication lines. The devices are functionally interchangeable within systems designed for SMBus temperature sensor integration.
Q: What is the difference between EMC1402-1-ACZL-TR, EMC1402-2-ACZL-TR, EMC1402-3-ACZL-TR, and EMC1402-4-ACZL-TR?
A: All four variants share identical electrical specifications: -40°C ~ 125°C sensing range, 11-bit resolution, ±1°C to ±2°C accuracy, and SMBus interface. Differences exist in packaging format (Tape & Reel vs. Cut Tape) and Moisture Sensitivity Level (MSL 1 to 2). Selection depends on procurement method and assembly environment moisture exposure duration.
Q: Can ADT7461ARMZ-R7 operate at 5V supply voltage while LM86CIMMX operates at 3.6V maximum?
A: Yes. ADT7461ARMZ-R7 supports 3V ~ 5.5V supply voltage range, extending beyond the LM86CIMMX 3V ~ 3.6V specification. This device is suitable for systems with variable or higher supply voltages. All other electrical parameters remain compatible with LM86CIMMX functional requirements.
Q: What is the significance of 11-bit resolution in EMC1402 series compared to 10-bit remote resolution in LM86CIMMX?
A: EMC1402 series devices provide 11-bit resolution for both local and remote temperature measurement, delivering finer temperature granularity than the LM86CIMMX 10-bit remote resolution. This enhanced resolution supports applications requiring more precise temperature discrimination and control algorithms.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All recommended substitute parts (LM86CIMMX/NOPB, ADM1032ARMZ-REEL, ADT7461AARMZ-R, ADT7461ARMZ-R7, EMC1072-1-ACZL-TR, EMC1402 series) are ROHS3 compliant. The original LM86CIMMX is RoHS non-compliant, making compliance certification a key advantage of substitutes for new production.
Q: What packaging options are available for EMC1402 series?
A: EMC1402 series is available in 8-MSOP package with two delivery formats: Tape & Reel (TR) for automated assembly and Cut Tape (CT) for manual or small-batch assembly. Both formats maintain identical electrical specifications and pin configuration.
Q: How does accuracy specification differ between LM86CIMMX and substitute parts?
A: LM86CIMMX specifies ±3°C accuracy. Substitute parts offer improved accuracy: ADT7461AARMZ-R provides ±1°C (±2.5°C), ADT7461ARMZ-R7 provides ±3°C, and EMC1402 series provides ±1°C (±2°C). Enhanced accuracy in substitutes supports applications requiring tighter temperature control and monitoring precision.
Q: Is ADM1032ARMZ-REEL suitable for direct LM86CIMMX replacement?
A: ADM1032ARMZ-REEL manufactured by Analog Devices Inc. is classified as a manufacturer-recommended substitute. Detailed electrical specifications are not fully provided in the reference data. Verification of SMBus interface compatibility, package form factor, and temperature sensing range is required before implementation in existing designs.
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