ADT7461ARMZ-002 Equivalent & Substitute Parts

Part Overview

The ADT7461ARMZ-002 is a digital temperature sensor manufactured by onsemi, designed for local and remote temperature monitoring across -40°C to 120°C (local) and -55°C to 150°C (remote) operating ranges. This component features SMBus output, 8-bit resolution, and programmable limit functionality in an 8-MSOP surface mount package. The part is currently obsolete, making equivalent substitutes necessary for ongoing system support and new designs requiring similar thermal monitoring capabilities.

Key Parameters

Parameter	Value
Manufacturer Part Number	ADT7461ARMZ-002
Manufacturer	onsemi
Category	Temperature Sensors
Sensor Type	Digital, Local/Remote
Sensing Temperature - Local	-40°C ~ 120°C
Sensing Temperature - Remote	-55°C ~ 150°C
Output Type	SMBus
Voltage - Supply	3V ~ 5.5V
Resolution	8 b
Accuracy	±3°C (-40°C ~ 100°C)
Features	One-Shot, Output Switch, Programmable Limit, Standby Mode
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the ADT7461ARMZ-002 is determined by the following critical parameters:

Sensor Type: Digital, Local/Remote capability
Output Interface: SMBus protocol compatibility
Package: 8-MSOP or equivalent 8-pin surface mount form factor
Supply Voltage Range: Minimum 3V support (ADT7461 operates 3V ~ 5.5V)
Resolution: 8-bit or higher local temperature resolution
Accuracy: ±3°C or better
Features: One-Shot, Output Switch, Programmable Limit functionality

The substitute parts identified (LM86CIMM/NOPB, LM86CIMMX/NOPB, LM90CIMM/NOPB, LM90CIMMX/NOPB) share the core SMBus digital temperature sensing architecture and 8-pin surface mount packaging. However, substitutes operate within narrower temperature ranges (0°C ~ 85°C local) and reduced supply voltage windows (3V ~ 3.6V), requiring design verification for applications demanding the full -40°C to 120°C local range of the ADT7461ARMZ-002.

Parameter Comparison

Parameter	ADT7461ARMZ-002	LM86CIMM/NOPB	LM86CIMMX/NOPB	LM90CIMM/NOPB	LM90CIMMX/NOPB
Manufacturer	onsemi	Texas Instruments	Texas Instruments	National Semiconductor	National Semiconductor
Sensor Type	Digital, Local/Remote	Digital, Local/Remote	Digital, Local/Remote	Digital, Local/Remote	Digital, Local/Remote
Sensing Temperature - Local	-40°C ~ 120°C	0°C ~ 85°C	0°C ~ 85°C	0°C ~ 85°C	0°C ~ 85°C
Sensing Temperature - Remote	-55°C ~ 150°C	0°C ~ 85°C	0°C ~ 85°C	0°C ~ 85°C	0°C ~ 85°C
Output Type	SMBus	SMBus	SMBus	SMBus	SMBus
Voltage - Supply	3V ~ 5.5V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V
Resolution	8 b	7 b (Local), 10 b (Remote)	7 b (Local), 10 b (Remote)	7 b (Local), 10 b (Remote)	7 b (Local), 10 b (Remote)
Accuracy	±3°C	±3°C	±3°C	±4°C	±4°C
Features	One-Shot, Output Switch, Programmable Limit, Standby Mode	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, Shutdown Mode, Standby Mode	One-Shot, Output Switch, Programmable Limit, Shutdown Mode, Standby Mode
Package / Case	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
Product Status	Obsolete	Obsolete	Active	Active	Active

Engineering Selection Recommendations

LM86CIMMX/NOPB (Texas Instruments, Active Status) is the primary recommended substitute for new designs. This part maintains active product status, ensuring long-term availability and supply chain stability. It provides ROHS3 compliance and identical SMBus interface architecture with the ADT7461ARMZ-002. The 3V ~ 3.6V supply range is compatible with modern low-power system designs, though applications requiring 5V operation or extended temperature ranges below 0°C must implement voltage regulation or alternative solutions.

LM90CIMMX/NOPB (National Semiconductor, Active Status) serves as a secondary option with equivalent SMBus functionality and active product status. The ±4°C accuracy specification (versus ±3°C for ADT7461ARMZ-002) is acceptable for most thermal management applications. Supply voltage compatibility remains limited to 3V ~ 3.6V.

LM86CIMM/NOPB and LM90CIMM/NOPB are obsolete alternatives and should not be selected for new designs despite current inventory availability.

For applications requiring the full -40°C to 120°C local temperature range or 5V supply operation of the original ADT7461ARMZ-002, no direct substitute exists within the provided part list. Design modification or alternative sensor architecture evaluation is necessary.

Frequently Asked Questions (FAQ)

Q: Can LM86CIMMX/NOPB replace ADT7461ARMZ-002 in all applications?

A: LM86CIMMX/NOPB is compatible for applications operating within 0°C ~ 85°C local temperature range and 3V ~ 3.6V supply voltage. Applications requiring -40°C operation or 5V supply must be redesigned or use alternative components.

Q: What is the difference between LM86 and LM90 series substitutes?

A: Both LM86 and LM90 series maintain SMBus interface and 8-pin surface mount packaging. The primary difference is accuracy specification: LM86 series provides ±3°C accuracy, while LM90 series provides ±4°C accuracy. Both operate within identical 0°C ~ 85°C temperature and 3V ~ 3.6V voltage ranges.

Q: Why do substitute parts have lower local temperature range than ADT7461ARMZ-002?

A: The LM86 and LM90 series are designed for standard industrial temperature monitoring (0°C ~ 85°C), while ADT7461ARMZ-002 extends to -40°C for extended-range applications. This represents a fundamental design difference between product families.

Q: Are the substitute parts pin-compatible with ADT7461ARMZ-002?

A: Yes. All substitute parts use 8-pin MSOP/VSSOP surface mount packages with identical SMBus pinout configuration. PCB layout modifications are not required for package substitution.

Q: Which substitute part should be selected for new production designs?

A: LM86CIMMX/NOPB is recommended for new designs due to active product status, ensuring availability throughout the product lifecycle. Verify that application temperature and voltage requirements fall within 0°C ~ 85°C and 3V ~ 3.6V specifications.

Q: What compliance certifications apply to substitute parts?

A: LM86CIMMX/NOPB carries ROHS3 compliance. All substitute parts are REACH Unaffected and classified as EAR99 for export control purposes.

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