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LM75BIMM-5 Temperature Sensor Equivalent & Substitute Parts
Part Overview
The LM75BIMM-5 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 a 3V to 5.5V supply and includes programmable limit switches and shutdown mode functionality. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Sensor Type | Digital, Local |
| Sensing Temperature Range | -55°C ~ 125°C |
| Output Type | I2C |
| Supply Voltage | 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-VSSOP |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the LM75BIMM-5 is determined by the following critical parameters:
- Sensor Type & Temperature Range: Digital local temperature sensing from -55°C to 125°C
- Output Interface: I2C communication protocol
- Supply Voltage Compatibility: 3V to 5.5V operation
- Resolution: 9-bit minimum resolution
- Core Features: Output switch, programmable limits, and shutdown mode capability
- Mounting & Package: Surface mount in 8-pin configurations
Substitute parts are grouped into three categories: direct equivalents (identical specifications with different packaging), upgraded variants (active product status with enhanced specifications), and manufacturer-recommended alternatives (functionally compatible from different manufacturers).
Parameter Comparison
| Part Number | Manufacturer | Product Status | Temperature Range | Resolution | Accuracy | Supply Voltage | Output Type | Package | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| LM75BIMM-5 | Texas Instruments | Obsolete | -55°C ~ 125°C | 9 b | ±2°C / ±3°C | 3V ~ 5.5V | I2C | 8-VSSOP | Non-compliant |
| LM75BIMM-5/NOPB | Texas Instruments | Obsolete | -55°C ~ 125°C | 9 b | ±2°C / ±3°C | 3V ~ 5.5V | I2C | 8-VSSOP | ROHS3 Compliant |
| LM75BIMM-3+ | Analog Devices Inc./Maxim Integrated | Active | -55°C ~ 125°C | 9 b | ±2°C / ±3°C | 3V ~ 5.5V | I2C | 8-uMAX/uSOP | ROHS3 Compliant |
| LM75BIMM-5+ | Analog Devices Inc./Maxim Integrated | Active | -55°C ~ 125°C | 9 b | ±2°C / ±3°C | 3V ~ 5.5V | I2C | 8-uMAX/uSOP | ROHS3 Compliant |
| LM75BIMMX-5+ | Analog Devices Inc./Maxim Integrated | Active | -55°C ~ 125°C | 9 b | ±2°C / ±3°C | 3V ~ 5.5V | I2C | 8-uMAX/uSOP | ROHS3 Compliant |
| MAX7500MUA+ | Analog Devices Inc./Maxim Integrated | Active | -55°C ~ 125°C | 9 b | ±2°C / ±3°C | 3V ~ 5.5V | I2C | 8-uMAX/uSOP | ROHS3 Compliant |
| MAX7500MUA+T | Analog Devices Inc./Maxim Integrated | Active | -55°C ~ 125°C | 9 b | ±2°C / ±3°C | 3V ~ 5.5V | I2C | 8-uMAX/uSOP | ROHS3 Compliant |
| MCP9844T-BE/MNY | Microchip Technology | Active | -40°C ~ 125°C | Not specified | ±3°C | 1.7V ~ 3.6V | I2C | 8-TDFN | ROHS3 Compliant |
| MCP9844T-BE/MNYAA | Microchip Technology | Active | -40°C ~ 125°C | Not specified | ±3°C | 1.7V ~ 3.6V | I2C | 8-TDFN | ROHS3 Compliant |
| MCP9844T-BE/MNYAB | Microchip Technology | Active | -40°C ~ 125°C | Not specified | ±3°C | 1.7V ~ 3.6V | I2C | 8-TDFN | ROHS3 Compliant |
| NCT75DMR2G | onsemi | Active | -55°C ~ 125°C | 11 b | ±1°C / ±3°C | 3V ~ 5.5V | I2C/SMBus | 8-MSOP | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Equivalent (Preferred for Obsolete Part Replacement): LM75BIMM-5/NOPB is the direct equivalent with identical electrical specifications and ROHS3 compliance. This part maintains full compatibility with existing designs while providing improved regulatory compliance over the original LM75BIMM-5.
Active Upgraded Variants (Recommended for New Designs): LM75BIMM-3+, LM75BIMM-5+, and LM75BIMMX-5+ are active product variants from Analog Devices Inc./Maxim Integrated with identical electrical performance and ROHS3 compliance. These parts differ only in packaging format (Tube or Tape & Reel) and represent the current production line for the LM75 series. Selection between these variants depends on procurement packaging requirements.
Manufacturer-Recommended Alternatives: MAX7500MUA+ and MAX7500MUA+T are manufacturer-recommended substitutes with identical electrical specifications and ROHS3 compliance. These parts are functionally equivalent and available in active production status.
Extended Temperature Range Alternative: NCT75DMR2G from onsemi provides enhanced 11-bit resolution and improved accuracy (±1°C vs ±2°C) while maintaining the -55°C to 125°C temperature range and I2C interface. This part is suitable for applications requiring higher measurement precision.
Lower Voltage Supply Alternative: MCP9844T-BE/MNY, MCP9844T-BE/MNYAA, and MCP9844T-BE/MNYAB from Microchip Technology operate on a reduced supply voltage range (1.7V to 3.6V) and include additional monitoring features. These parts are suitable for low-power applications but have a narrower lower temperature limit (-40°C minimum vs -55°C).
Frequently Asked Questions (FAQ)
Q: Can LM75BIMM-5/NOPB be used as a direct replacement for LM75BIMM-5? A: Yes. LM75BIMM-5/NOPB is electrically and functionally identical to LM75BIMM-5, with the primary difference being ROHS3 compliance and packaging format (Digi-Reel). No design changes are required.
Q: What is the difference between LM75BIMM-5+ and MAX7500MUA+? A: Both parts have identical electrical specifications, temperature range, resolution, and I2C interface. The difference is the base product number designation (LM75 vs MAX7500) and internal architecture. Both are manufacturer-recommended substitutes with equivalent performance.
Q: Why does NCT75DMR2G have different accuracy specifications? A: NCT75DMR2G provides 11-bit resolution compared to the 9-bit resolution of LM75BIMM-5, resulting in improved accuracy of ±1°C across the 0°C to 70°C range. This enhanced resolution makes it suitable for applications requiring higher measurement precision.
Q: Can MCP9844T-BE/MNY replace LM75BIMM-5 in all applications? A: MCP9844T-BE/MNY is functionally compatible for I2C-based temperature monitoring but operates on a lower supply voltage range (1.7V to 3.6V) and has a minimum operating temperature of -40°C instead of -55°C. Verify that your application does not require operation below -40°C or above 3.6V supply voltage.
Q: What packaging options are available for active LM75 variants? A: Active LM75 variants are available in Tube packaging (LM75BIMM-3+, LM75BIMM-5+) and Tape & Reel packaging (LM75BIMMX-5+). Select based on your procurement and assembly requirements.
Q: Are all substitute parts ROHS3 compliant? A: All substitute parts listed are ROHS3 compliant. The original LM75BIMM-5 is non-compliant, making the compliant variants necessary for applications with regulatory requirements.
Q: What is the key difference between 8-VSSOP and 8-uMAX/uSOP packages? A: Both are 8-pin surface mount packages with identical pin configurations and electrical compatibility. The primary difference is physical dimensions and thermal characteristics. Verify PCB layout compatibility before substitution.
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