LM75BIM-3 Equivalent & Substitute Parts

Part Overview

The LM75BIM-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 3V to 5.5V supply voltage and includes programmable limit switches and shutdown mode functionality. The LM75BIM-3 is classified as "Not For New Designs," indicating obsolescence in the Texas Instruments product line. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance or redesign initiatives.

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
Package	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C

Substitute Part Grouping Explanation

Substitute parts for the LM75BIM-3 are categorized based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Sensor Type: Digital, Local
Temperature Range: -55°C ~ 125°C
Output Interface: I2C
Supply Voltage: 3V ~ 5.5V
Resolution: 9 bits
Package Type: 8-SOIC form factor
Features: Output Switch, Programmable Limit, Shutdown Mode

Substitute Categories:

Direct Substitutes (Texas Instruments LM75 Series): Parts maintaining identical electrical specifications and 8-SOIC packaging. These include LM75BIM-3/NOPB (Obsolete status), LM75BIM-3+ (Active), LM75BIM-5+ (Active), LM75BIMX-3+ (Active, Cut Tape packaging), and LM75BIMX-5+ (Active, Tape & Reel packaging). All maintain full parameter compatibility with the original LM75BIM-3.

Manufacturer-Recommended Upgrades (Analog Devices MAX7500 Series): MAX7500MSA+ and MAX7500MSA+T provide equivalent functionality with Active product status and ROHS3 compliance. These parts maintain identical electrical specifications and 8-SOIC packaging.

Cross-Manufacturer Alternative (Microchip MCP9844 Series): MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, and MCP9844T-BE/MNYAB offer functional equivalence with I2C interface and temperature monitoring capability. These parts operate within -40°C ~ 125°C range (subset of LM75BIM-3 range), feature 8-TDFN packaging, and support lower supply voltage (1.7V ~ 3.6V). Mechanical compatibility differs due to package type variation.

Parameter Comparison

Part Number	Manufacturer	Product Status	Temperature Range	Supply Voltage	Resolution	Output Type	Package	RoHS Status
LM75BIM-3	Texas Instruments	Not For New Designs	-55°C ~ 125°C	3V ~ 5.5V	9 bits	I2C	8-SOIC	RoHS Non-Compliant
LM75BIM-3/NOPB	Texas Instruments	Obsolete	-55°C ~ 125°C	3V ~ 5.5V	9 bits	I2C	8-SOIC	ROHS3 Compliant
LM75BIM-3+	Analog Devices Inc./Maxim Integrated	Active	-55°C ~ 125°C	3V ~ 5.5V	9 bits	I2C	8-SOIC	ROHS3 Compliant
LM75BIM-5+	Analog Devices Inc./Maxim Integrated	Active	-55°C ~ 125°C	3V ~ 5.5V	9 bits	I2C	8-SOIC	ROHS3 Compliant
LM75BIMX-3+	Analog Devices Inc./Maxim Integrated	Active	-55°C ~ 125°C	3V ~ 5.5V	9 bits	I2C	8-SOIC	ROHS3 Compliant
LM75BIMX-5+	Analog Devices Inc./Maxim Integrated	Active	-55°C ~ 125°C	3V ~ 5.5V	9 bits	I2C	8-SOIC	ROHS3 Compliant
MAX7500MSA+	Analog Devices Inc./Maxim Integrated	Active	-55°C ~ 125°C	3V ~ 5.5V	9 bits	I2C	8-SOIC	ROHS3 Compliant
MAX7500MSA+T	Analog Devices Inc./Maxim Integrated	Active	-55°C ~ 125°C	3V ~ 5.5V	9 bits	I2C	8-SOIC	ROHS3 Compliant
MCP9844T-BE/MNY	Microchip Technology	Active	-40°C ~ 125°C	1.7V ~ 3.6V	9 bits	I2C	8-TDFN	ROHS3 Compliant
MCP9844T-BE/MNYAA	Microchip Technology	Active	-40°C ~ 125°C	1.7V ~ 3.6V	9 bits	I2C	8-TDFN	ROHS3 Compliant
MCP9844T-BE/MNYAB	Microchip Technology	Active	-40°C ~ 125°C	1.7V ~ 3.6V	9 bits	I2C	8-TDFN	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement: Select LM75BIM-3+, LM75BIM-5+, LM75BIMX-3+, or LM75BIMX-5+ from Analog Devices Inc./Maxim Integrated. These parts maintain identical electrical specifications, 8-SOIC packaging, and full temperature range coverage (-55°C ~ 125°C). All are Active status products with ROHS3 compliance, suitable for new designs and legacy system support. Packaging variants (Tube, Cut Tape, Tape & Reel) accommodate different procurement and assembly workflows.

For Manufacturer-Recommended Upgrade Path: MAX7500MSA+ and MAX7500MSA+T provide equivalent functionality with Active product status and ROHS3 compliance. These parts are suitable for applications requiring manufacturer-backed alternatives with identical electrical and mechanical specifications.

For Cross-Manufacturer Substitution: MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, and MCP9844T-BE/MNYAB from Microchip Technology offer functional equivalence with I2C interface and 9-bit resolution. These parts operate within -40°C ~ 125°C (subset of LM75BIM-3 range) and feature 8-TDFN packaging. Selection requires PCB layout modification due to package type difference. Supply voltage range (1.7V ~ 3.6V) is narrower than LM75BIM-3 (3V ~ 5.5V), requiring circuit verification for 5V operation compatibility.

Frequently Asked Questions (FAQ)

Q: Can LM75BIM-3+ be used as a direct replacement for LM75BIM-3? A: Yes. LM75BIM-3+ maintains identical electrical specifications, temperature range (-55°C ~ 125°C), supply voltage (3V ~ 5.5V), I2C output, 9-bit resolution, and 8-SOIC packaging. The primary difference is product status (Active vs. Not For New Designs) and RoHS compliance (ROHS3 vs. Non-Compliant).

Q: What is the difference between LM75BIM-3+, LM75BIM-5+, LM75BIMX-3+, and LM75BIMX-5+? A: All four parts are electrically identical. Differences are in packaging format: LM75BIM variants use Tube packaging, while LM75BIMX variants use Cut Tape (CT) & Digi-Reel or Tape & Reel (TR) formats. The "3" and "5" designations refer to supply voltage variants (3V or 5V nominal), though all support the full 3V ~ 5.5V range.

Q: Is MCP9844T-BE/MNY a suitable replacement for LM75BIM-3? A: MCP9844T-BE/MNY provides functional equivalence with I2C interface and 9-bit resolution but differs in package type (8-TDFN vs. 8-SOIC), temperature range (-40°C ~ 125°C vs. -55°C ~ 125°C), and supply voltage (1.7V ~ 3.6V vs. 3V ~ 5.5V). PCB layout modification is required. Applications requiring full -55°C operation or 5V supply operation must verify compatibility.

Q: What is the difference between MAX7500MSA+ and MAX7500MSA+T? A: Both parts are electrically identical. MAX7500MSA+ uses Tube packaging, while MAX7500MSA+T uses Cut Tape (CT) & Digi-Reel packaging. Selection depends on procurement and assembly requirements.

Q: Why is LM75BIM-3 marked as "Not For New Designs"? A: This status indicates the part is in the obsolescence phase of its product lifecycle. Texas Instruments recommends using Active alternatives such as LM75BIM-3+ or MAX7500MSA+ for new designs to ensure long-term supply availability and support.

Q: Are all substitute parts RoHS compliant? A: LM75BIM-3 is RoHS Non-Compliant. All listed substitute parts (LM75BIM-3/NOPB, LM75BIM-3+, LM75BIM-5+, LM75BIMX-3+, LM75BIMX-5+, MAX7500MSA+, MAX7500MSA+T, MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, MCP9844T-BE/MNYAB) are ROHS3 Compliant, meeting current environmental and regulatory requirements.

Q: Can I use MCP9844T-BE/MNY in a 5V circuit? A: MCP9844T-BE/MNY operates on 1.7V ~ 3.6V supply voltage. Direct connection to 5V circuits requires voltage regulation or level shifting. Circuit design verification is necessary before implementation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message