ADT7461AARMZ-2RL Equivalent & Substitute Parts

Part Overview

The ADT7461AARMZ-2RL is a digital temperature sensor manufactured by onsemi, designed for local and remote temperature monitoring across -40°C to 120°C (local) and -64°C to 191°C (remote) operating ranges. This component features SMBus output, 8-bit resolution, and integrated programmable limit functionality with one-shot and standby modes. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

ADT7461AARMZ-2RL

onsemiIn Stock: 15227ADT7461AARMZ-2RL Datasheet

Current PartRFQ

LM86CIMM/NOPB

Texas InstrumentsIn Stock: 1752LM86CIMM/NOPB Datasheet

SimilarRFQ

LM86CIMMX/NOPB

Texas InstrumentsIn Stock: 2141LM86CIMMX/NOPB Datasheet

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LM90CIMM/NOPB

National SemiconductorIn Stock: 3407LM90CIMM/NOPB Datasheet

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LM90CIMMX/NOPB

National SemiconductorIn Stock: 4391LM90CIMMX/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ADT7461AARMZ-2RL is determined by the following critical parameters:

Primary Compatibility Criteria:

• Output Type: SMBus interface
• Supply Voltage: 3V ~ 3.6V
• Mounting Type: Surface Mount
• Package Type: 8-MSOP or 8-VSSOP (mechanically compatible)
• Sensor Type: Digital, Local/Remote capability

Secondary Compatibility Criteria:

• Resolution: 8-bit or higher (local channel)
• Operating Temperature Range: Must support at least 0°C ~ 85°C minimum
• Features: One-Shot, Output Switch, Programmable Limit, Standby/Shutdown Mode

The substitute parts identified (LM86CIMM/NOPB, LM86CIMMX/NOPB, LM90CIMM/NOPB, LM90CIMMX/NOPB) meet all primary criteria and share the core feature set. Differences in local temperature range, remote temperature range, and accuracy specifications are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

LM86CIMMX/NOPB (Recommended Primary Substitute)

This Texas Instruments component is the preferred substitute due to active product status and ROHS3 compliance certification. It maintains full SMBus interface compatibility, identical supply voltage range (3V ~ 3.6V), and equivalent feature set including one-shot, output switch, programmable limit, and standby/shutdown modes. The 8-VSSOP package is mechanically compatible with the original 8-MSOP footprint. Local temperature sensing range (0°C ~ 85°C) is narrower than the original part; remote sensing is limited to 0°C ~ 85°C versus the original -64°C ~ 191°C. Accuracy specification of ±3°C represents a tolerance increase from the original ±1°C. Current inventory availability is 2071 units.

LM90CIMMX/NOPB (Secondary Substitute)

This National Semiconductor component offers active product status with identical electrical and interface specifications to the LM86CIMMX/NOPB. Temperature sensing ranges and accuracy (±4°C) are equivalent to the LM86 series. Inventory availability is 4281 units. Selection between LM86CIMMX/NOPB and LM90CIMMX/NOPB should be based on supply chain availability and design timeline requirements.

LM86CIMM/NOPB and LM90CIMM/NOPB (Tertiary Options)

Both components provide functional equivalence but carry obsolete product status classification, similar to the original part. These should be considered only when active-status alternatives are unavailable. LM86CIMM/NOPB inventory is 1694 units; LM90CIMM/NOPB inventory is 3300 units.

Frequently Asked Questions (FAQ)

Q: Can LM86CIMMX/NOPB directly replace ADT7461AARMZ-2RL in existing designs?

A: Electrical and functional compatibility is confirmed for SMBus-based temperature monitoring applications within the 0°C ~ 85°C local sensing range. The 8-VSSOP package is mechanically compatible with 8-MSOP footprints. Design review is required if the original application requires local temperature sensing below 0°C or above 85°C, or remote sensing beyond 0°C ~ 85°C. Accuracy tolerance increase from ±1°C to ±3°C must be evaluated against system requirements.

Q: What are the key differences between LM86 and LM90 series substitutes?

A: Both LM86CIMMX/NOPB and LM90CIMMX/NOPB provide identical electrical specifications, SMBus interface, supply voltage (3V ~ 3.6V), and feature sets. The primary difference is manufacturer: LM86 is Texas Instruments; LM90 is National Semiconductor. Accuracy specifications differ slightly (±3°C for LM86 versus ±4°C for LM90). Selection should be based on supply chain preference and availability.

Q: Are there temperature range limitations with substitute parts?

A: Yes. The ADT7461AARMZ-2RL supports local sensing from -40°C ~ 120°C and remote sensing from -64°C ~ 191°C. All identified substitutes limit local and remote sensing to 0°C ~ 85°C. Applications requiring extended temperature ranges below 0°C or above 85°C cannot use these substitutes without design modification.

Q: What is the package compatibility between 8-MSOP and 8-VSSOP?

A: Both 8-MSOP and 8-VSSOP are 8-pin surface-mount packages with 0.118" (3.00mm) width. Pin pitch and footprint are mechanically compatible, allowing direct PCB layout substitution. Verify pinout alignment with device datasheets before assembly.

Q: Which substitute offers the best long-term availability?

A: LM86CIMMX/NOPB and LM90CIMMX/NOPB both carry active product status, indicating ongoing manufacturer support and production. LM86CIMMX/NOPB includes ROHS3 compliance certification. Both are preferred over obsolete-status alternatives for new designs and long-term procurement planning.