Request Quote
(Ships tomorrow)
LM75BD,112 Equivalent & Substitute Parts
Part Overview
The LM75BD,112 is a digital temperature sensor manufactured by NXP USA Inc., designed for local temperature measurement across the -55°C to 125°C range with 11-bit resolution and I2C output interface. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The sensor operates on supply voltages between 2.8V and 5.5V and provides programmable limit thresholds with output switch functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | LM75BD,112 |
| Manufacturer | NXP USA Inc. |
| Product Status | Obsolete |
| Sensor Type | Digital, Local |
| Sensing Temperature Range | -55°C ~ 125°C |
| Output Type | I2C |
| Voltage Supply | 2.8V ~ 5.5V |
| Resolution | 11 bits |
| Accuracy | ±2°C (-25°C ~ 100°C), ±3°C (-55°C ~ 125°C) |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the LM75BD,112 are selected based on the following critical parameters that determine functional equivalence:
Core Substitution Criteria:
- Sensing temperature range: -55°C ~ 125°C (full range match required)
- Output interface: I2C or I2C/SMBus compatible
- Resolution: 11 bits
- Package type: 8-SOIC form factor
- Mounting type: Surface Mount
- Operating temperature: -55°C ~ 125°C
- RoHS3 compliance
The substitute parts listed below meet these electrical and mechanical requirements. All substitute parts are manufactured by Microchip Technology and are in active product status, providing long-term availability advantages over the obsolete LM75BD,112.
Parameter Comparison
| Parameter | LM75BD,112 | AT30TS74-SS8M-B | AT30TS74-SS8M-T | AT30TS750A-SS8M-B | AT30TS75A-SS8M-T | AT30TSE752A-SS8M-B | AT30TSE752A-SS8M-T | AT30TSE754A-SS8M-B | AT30TSE758A-SS8M-B | AT30TSE758A-SS8M-T |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| Sensor Type | Digital, Local | Digital, Local | Digital, Local | Digital, Local | Digital, Local | Digital, Local | Digital, Local | Digital, Local | Digital, Local | Digital, Local |
| Sensing Temperature Range | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Output Type | I2C | I2C/SMBus | I2C/SMBus | I2C/SMBus | I2C/SMBus | I2C/SMBus | I2C/SMBus | I2C/SMBus | I2C/SMBus | I2C/SMBus |
| Voltage Supply | 2.8V ~ 5.5V | 1.7V ~ 5.5V | 1.7V ~ 5.5V | 1.7V ~ 5.5V | 1.7V ~ 5.5V | 1.7V ~ 5.5V | 1.7V ~ 5.5V | 1.7V ~ 5.5V | 1.7V ~ 5.5V | 1.7V ~ 5.5V |
| Resolution | 11 bits | 11 bits | 11 bits | 11 bits | 11 bits | 11 bits | 11 bits | 11 bits | 11 bits | 11 bits |
| Accuracy (Highest) | ±2°C | ±2°C | ±2°C | ±1°C | ±1°C | ±1°C | ±1°C | ±1°C | ±1°C | ±1°C |
| Package Type | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
All listed substitute parts are active products from Microchip Technology with ROHS3 compliance and REACH unaffected status, providing regulatory alignment with current environmental standards. The AT30TS74 series offers direct functional equivalence with the LM75BD,112 while maintaining identical accuracy specifications (±2°C) and identical test conditions. The AT30TS75A, AT30TSE752A, AT30TSE754A, and AT30TSE758A series provide enhanced accuracy (±1°C) with extended feature sets including programmable resolution and shutdown modes, suitable for applications requiring improved thermal precision.
Packaging options include Tube (B suffix), Cut Tape & Digi-Reel (standard), and Tape & Reel (T suffix) formats to accommodate different procurement and assembly workflows. Supply voltage compatibility extends to 1.7V minimum across all substitutes, providing broader operational flexibility compared to the original 2.8V minimum specification.
Frequently Asked Questions (FAQ)
Q: Can AT30TS74-SS8M-B directly replace LM75BD,112 in existing designs?
A: Yes. The AT30TS74-SS8M-B maintains identical sensing temperature range (-55°C ~ 125°C), 11-bit resolution, I2C/SMBus interface compatibility, 8-SOIC package form factor, and equivalent accuracy specifications (±2°C). Pin-to-pin compatibility and functional equivalence are established.
Q: What is the difference between AT30TS74 and AT30TSE752A series?
A: Both series meet core substitution criteria. The AT30TSE752A provides enhanced accuracy (±1°C versus ±2°C) and includes additional features such as EEPROM, programmable resolution, and shutdown mode. Selection depends on application requirements for thermal precision and feature utilization.
Q: Are packaging variants (Tube, Cut Tape, Tape & Reel) electrically equivalent?
A: Yes. Packaging designations (B, standard, T suffixes) indicate only the delivery format and moisture sensitivity level. Electrical specifications, performance characteristics, and functional operation remain identical across all packaging variants of the same base part number.
Q: Does the extended supply voltage range (1.7V ~ 5.5V) of substitutes affect circuit design?
A: The lower minimum supply voltage (1.7V versus 2.8V) of substitute parts provides design flexibility for low-power applications. Existing designs operating at 2.8V ~ 5.5V require no modification and benefit from improved supply margin.
Q: What is the significance of MSL (Moisture Sensitivity Level) differences?
A: MSL ratings indicate storage and handling requirements. MSL 1 (Unlimited) allows indefinite storage without desiccant. MSL 3 (168 Hours) requires controlled humidity storage and has a 168-hour floor life after packaging opening. Selection depends on supply chain and assembly process capabilities.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts