LM75BIMM-3 Equivalent & Substitute Parts

Part Overview

The LM75BIMM-3 is a digital temperature sensor manufactured by Texas Instruments, designed for local temperature measurement across the -55°C to 125°C range with 9-bit resolution and I2C output interface. The device operates on supply voltages between 3V and 5.5V and includes programmable limit thresholds, output switch capability, and shutdown mode functionality.

The LM75BIMM-3 carries a "Not For New Designs" product status and is RoHS non-compliant. Identifying equivalent and substitute parts is necessary for applications requiring active production support, improved compliance certifications, or alternative packaging configurations while maintaining functional compatibility.

Key Parameters

Parameter	Value
Sensor Type	Digital, Local
Sensing Temperature Range	-55°C ~ 125°C
Output Type	I2C
Voltage Supply	3V ~ 5.5V
Resolution	9 bits
Accuracy	±2°C (-25°C ~ 100°C) / ±3°C (-55°C ~ 125°C)
Features	Output Switch, Programmable Limit, Shutdown Mode
Mounting Type	Surface Mount
Package	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature	-55°C ~ 125°C

Substitute Part Grouping Explanation

Substitution eligibility for the LM75BIMM-3 is determined by the following critical parameters:

Sensor Type: Digital, Local
Temperature Range: -55°C ~ 125°C minimum
Output Interface: I2C compatible
Supply Voltage: 3V ~ 5.5V compatible range
Resolution: 9 bits or higher
Features: Output Switch, Programmable Limit, Shutdown Mode
Mounting: Surface Mount
Package Compatibility: 8-pin TSSOP/MSOP or equivalent footprint

Substitute parts are grouped into three categories based on product status and compliance:

Direct Equivalent (Same Base Product): LM75BIMM-3/NOPB maintains identical electrical specifications with improved RoHS3 compliance and Obsolete status.

Upgrade Options (Active Production): LM75BIMM-3+, LM75BIMM-5+, and LM75BIMMX-5+ are active production variants from Analog Devices Inc./Maxim Integrated with enhanced compliance and alternative packaging.

Manufacturer-Recommended Alternatives: MAX7500MUA+, MAX7500MUA+T, MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, MCP9844T-BE/MNYAB, and NCT75DMR2G represent functionally compatible devices from alternative manufacturers meeting or exceeding the core parameter requirements.

Parameter Comparison

Part Number	Manufacturer	Sensor Type	Temperature Range	Output Type	Supply Voltage	Resolution	Accuracy	Product Status	RoHS Status	Package
LM75BIMM-3	Texas Instruments	Digital, Local	-55°C ~ 125°C	I2C	3V ~ 5.5V	9 b	±2°C / ±3°C	Not For New Designs	RoHS non-compliant	8-VSSOP
LM75BIMM-3/NOPB	Texas Instruments	Digital, Local	-55°C ~ 125°C	I2C	3V ~ 5.5V	9 b	±2°C / ±3°C	Obsolete	ROHS3 Compliant	8-VSSOP
LM75BIMM-3+	Analog Devices Inc./Maxim Integrated	Digital, Local	-55°C ~ 125°C	I2C	3V ~ 5.5V	9 b	±2°C / ±3°C	Active	ROHS3 Compliant	8-uMAX/uSOP
LM75BIMM-5+	Analog Devices Inc./Maxim Integrated	Digital, Local	-55°C ~ 125°C	I2C	3V ~ 5.5V	9 b	±2°C / ±3°C	Active	ROHS3 Compliant	8-uMAX/uSOP
LM75BIMMX-5+	Analog Devices Inc./Maxim Integrated	Digital, Local	-55°C ~ 125°C	I2C	3V ~ 5.5V	9 b	±2°C / ±3°C	Active	ROHS3 Compliant	8-uMAX/uSOP
MAX7500MUA+	Analog Devices Inc./Maxim Integrated	Digital, Local	-55°C ~ 125°C	I2C	3V ~ 5.5V	9 b	±2°C / ±3°C	Active	ROHS3 Compliant	8-uMAX/uSOP
MAX7500MUA+T	Analog Devices Inc./Maxim Integrated	Digital, Local	-55°C ~ 125°C	I2C	3V ~ 5.5V	9 b	±2°C / ±3°C	Active	ROHS3 Compliant	8-uMAX/uSOP
MCP9844T-BE/MNY	Microchip Technology	Internal	-40°C ~ 125°C	I2C	1.7V ~ 3.6V	Not specified	±3°C	Active	ROHS3 Compliant	8-TDFN (2x3)
MCP9844T-BE/MNYAA	Microchip Technology	Internal	-40°C ~ 125°C	I2C	1.7V ~ 3.6V	Not specified	±3°C	Active	ROHS3 Compliant	8-TDFN (2x3)
MCP9844T-BE/MNYAB	Microchip Technology	Internal	-40°C ~ 125°C	I2C	1.7V ~ 3.6V	Not specified	±3°C	Active	ROHS3 Compliant	8-TDFN (2x3)
NCT75DMR2G	onsemi	Digital, Local	-55°C ~ 125°C	I2C/SMBus	3V ~ 5.5V	11 b	±1°C / ±3°C	Active	ROHS3 Compliant	8-MSOP

Engineering Selection Recommendations

For Direct Replacement with Improved Compliance: LM75BIMM-3/NOPB provides identical electrical and functional specifications to the original LM75BIMM-3 with RoHS3 compliance upgrade. Obsolete status indicates no new production; use only for legacy system maintenance.

For Active Production Designs: LM75BIMM-3+, LM75BIMM-5+, and LM75BIMMX-5+ are active production alternatives from Analog Devices Inc./Maxim Integrated maintaining full electrical compatibility with the LM75BIMM-3. These variants differ in packaging configuration (Tube vs. Tape & Reel) and supply voltage suffix notation. All three carry ROHS3 compliance and REACH Unaffected status.

For Alternative Manufacturer Solutions: MAX7500MUA+ and MAX7500MUA+T from Analog Devices Inc./Maxim Integrated maintain identical electrical specifications and feature set. Packaging options include Tube (MAX7500MUA+) and Tape & Reel (MAX7500MUA+T).

NCT75DMR2G from onsemi offers enhanced 11-bit resolution and improved accuracy (±1°C at 0°C ~ 70°C) while maintaining the -55°C ~ 125°C temperature range, 3V ~ 5.5V supply compatibility, and I2C/SMBus interface. Package footprint is 8-MSOP, compatible with the original 8-TSSOP/8-MSOP specification.

MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, and MCP9844T-BE/MNYAB from Microchip Technology are functionally compatible alternatives with I2C output and ±3°C accuracy. These devices operate on 1.7V ~ 3.6V supply voltage and feature internal temperature sensing. Package is 8-TDFN (2x3), requiring PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can LM75BIMM-3/NOPB be used as a direct drop-in replacement? A: LM75BIMM-3/NOPB maintains identical electrical specifications, features, and package configuration. Obsolete status indicates no new production availability; verify inventory before design commitment.

Q: What is the primary difference between LM75BIMM-3+ and LM75BIMM-5+? A: Both variants maintain identical electrical specifications and feature sets. The suffix notation indicates internal voltage reference configuration. Packaging differs between Tube (LM75BIMM-3+, LM75BIMM-5+) and Tape & Reel (LM75BIMMX-5+).

Q: Is NCT75DMR2G compatible with existing LM75BIMM-3 designs? A: NCT75DMR2G maintains I2C interface compatibility, identical temperature range (-55°C ~ 125°C), and 3V ~ 5.5V supply voltage. Enhanced 11-bit resolution and ±1°C accuracy provide improved performance. Package footprint (8-MSOP) is compatible with the original 8-TSSOP/8-MSOP specification.

Q: Can MCP9844T-BE/MNY replace LM75BIMM-3 in all applications? A: MCP9844T-BE/MNY provides I2C interface and ±3°C accuracy across -40°C ~ 125°C range. Supply voltage range (1.7V ~ 3.6V) is narrower than LM75BIMM-3 (3V ~ 5.5V). Package is 8-TDFN (2x3), requiring PCB layout modification. Verify supply voltage compatibility and available board space before substitution.

Q: What compliance certifications apply to substitute parts? A: LM75BIMM-3/NOPB, LM75BIMM-3+, LM75BIMM-5+, LM75BIMMX-5+, MAX7500MUA+, MAX7500MUA+T, MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, MCP9844T-BE/MNYAB, and NCT75DMR2G all carry ROHS3 compliance and REACH Unaffected status. Original LM75BIMM-3 is RoHS non-compliant and REACH Affected.

Q: Are packaging differences between substitute parts significant? A: Packaging differences affect assembly process and PCB layout. 8-VSSOP, 8-TSSOP, 8-MSOP, 8-uMAX/uSOP, and 8-TDFN packages have different footprints and thermal characteristics. Verify PCB design compatibility and reflow profile requirements before substitution.

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