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TMP75AIDRG4 Equivalent & Substitute Parts
Part Overview
The TMP75AIDRG4 is a digital temperature sensor manufactured by Texas Instruments, designed for local temperature measurement across the range of -40°C to 125°C with 11-bit resolution. This component operates via I2C/SMBus interface and is packaged in an 8-SOIC surface mount configuration. The TMP75AIDRG4 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute components must maintain compatibility with the original electrical specifications, mechanical packaging, and communication protocol while offering active product status and continued availability.
Substiute Parts
Key Parameters
| Parameter | TMP75AIDRG4 Specification |
|---|---|
| Sensor Type | Digital, Local |
| Sensing Temperature Range | -40°C ~ 125°C |
| Output Type | I2C/SMBus |
| Supply Voltage | 2.7V ~ 5.5V |
| Resolution | 11 bits |
| Accuracy | ±2°C (-25°C ~ 85°C), ±3°C (-40°C ~ 125°C) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -55°C ~ 127°C |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the TMP75AIDRG4 is determined by the following critical parameters:
Primary Compatibility Criteria:
- Package / Case: 8-SOIC (0.154", 3.90mm Width) — mechanical and electrical footprint compatibility
- Output Type: I2C/SMBus — communication protocol compatibility
- Supply Voltage: 2.7V ~ 5.5V minimum overlap — power supply compatibility
- Sensing Temperature Range: Must encompass or exceed -40°C ~ 125°C
- Resolution: 11 bits or higher — data precision compatibility
- Accuracy: ±2°C to ±3°C range — measurement tolerance compatibility
- Mounting Type: Surface Mount — assembly process compatibility
- RoHS Status: ROHS3 Compliant — regulatory compliance
Secondary Considerations:
- Product Status: Active status preferred for long-term availability
- Moisture Sensitivity Level: Lower MSL values indicate better shelf-life stability
- Features: One-Shot, Output Switch, Programmable Resolution, Shutdown Mode — functional feature set
Substitute parts meeting all primary criteria are considered electrically and mechanically compatible with the TMP75AIDRG4.
Parameter Comparison
| Part Number | Manufacturer | Sensing Temp Range | Resolution | Supply Voltage | Accuracy | Package | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|
| TMP75AIDRG4 | Texas Instruments | -40°C ~ 125°C | 11 b | 2.7V ~ 5.5V | ±2°C / ±3°C | 8-SOIC | Obsolete | 1759 Pcs |
| TMP75AIDR | Texas Instruments | -40°C ~ 125°C | 11 b | 2.7V ~ 5.5V | ±2°C / ±3°C | 8-SOIC | Active | 80988 Pcs |
| ADT75ARZ-REEL | Analog Devices Inc. | -55°C ~ 125°C | 12 b | 2.7V ~ 5.5V | ±2°C / ±3°C | 8-SOIC | Active | 17800 Pcs |
| ADT75ARZ-REEL7 | Analog Devices Inc. | -55°C ~ 125°C | 12 b | 2.7V ~ 5.5V | ±2°C / ±3°C | 8-SOIC | Active | 1888 Pcs |
| AT30TS74-SS8M-B | Microchip Technology | -55°C ~ 125°C | 11 b | 1.7V ~ 5.5V | ±2°C / ±3°C | 8-SOIC | Active | 1340 Pcs |
| AT30TS74-SS8M-T | Microchip Technology | -55°C ~ 125°C | 11 b | 1.7V ~ 5.5V | ±2°C / ±3°C | 8-SOIC | Active | 1148 Pcs |
| AT30TS750A-SS8M-B | Microchip Technology | -55°C ~ 125°C | 11 b | 1.7V ~ 5.5V | ±1°C / ±3°C | 8-SOIC | Active | 1570 Pcs |
| AT30TS75A-SS8M-T | Microchip Technology | -55°C ~ 125°C | 11 b | 1.7V ~ 5.5V | ±1°C / ±3°C | 8-SOIC | Active | 9386 Pcs |
| AT30TSE752A-SS8M-B | Microchip Technology | -55°C ~ 125°C | 11 b | 1.7V ~ 5.5V | ±1°C / ±3°C | 8-SOIC | Active | 1475 Pcs |
| AT30TSE752A-SS8M-T | Microchip Technology | -55°C ~ 125°C | 11 b | 1.7V ~ 5.5V | ±1°C / ±3°C | 8-SOIC | Active | 17632 Pcs |
| AT30TSE754A-SS8M-B | Microchip Technology | -55°C ~ 125°C | 11 b | 1.7V ~ 5.5V | ±1°C / ±3°C | 8-SOIC | Active | 1252 Pcs |
Engineering Selection Recommendations
Primary Recommendation: TMP75AIDR
The TMP75AIDR from Texas Instruments is the direct functional equivalent of the TMP75AIDRG4. It maintains identical electrical specifications including sensing temperature range (-40°C ~ 125°C), resolution (11 bits), supply voltage (2.7V ~ 5.5V), and accuracy (±2°C / ±3°C). The primary distinction is product status: TMP75AIDR is active with significantly higher inventory availability (80988 Pcs), ensuring supply chain continuity. Both components are ROHS3 compliant and packaged in 8-SOIC configuration. This substitution requires no design modifications.
Secondary Recommendations: Microchip AT30TS Series
The Microchip AT30TS74-SS8M-T, AT30TS75A-SS8M-T, AT30TSE752A-SS8M-T, and AT30TSE754A-SS8M-B are compatible substitutes. These components share the 8-SOIC package, I2C/SMBus interface, and operating temperature range. Key differences include:
- Lower minimum supply voltage (1.7V vs. 2.7V) provides expanded power supply flexibility
- Extended sensing temperature range (-55°C vs. -40°C) offers broader operational capability
- AT30TS750A and AT30TSE752A variants feature improved accuracy (±1°C vs. ±2°C)
- All variants are ROHS3 compliant and active products
Alternative Recommendation: Analog Devices ADT75ARZ Series
The ADT75ARZ-REEL and ADT75ARZ-REEL7 from Analog Devices are compatible substitutes with 12-bit resolution, providing higher measurement precision than the original 11-bit TMP75AIDRG4. These components maintain identical supply voltage (2.7V ~ 5.5V), accuracy (±2°C / ±3°C), and 8-SOIC packaging. The extended sensing temperature range (-55°C ~ 125°C) and active product status support long-term availability. The increased resolution may require firmware adjustment to accommodate the additional data bits.
Compliance and Certification:
All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original TMP75AIDRG4 application requirements.
Frequently Asked Questions (FAQ)
Q: Can TMP75AIDR be used as a direct replacement for TMP75AIDRG4?
A: Yes. The TMP75AIDR is electrically and mechanically identical to the TMP75AIDRG4. Both components feature identical sensing temperature range (-40°C ~ 125°C), resolution (11 bits), supply voltage (2.7V ~ 5.5V), accuracy specifications, and 8-SOIC packaging. The primary difference is product status: TMP75AIDR is active with higher inventory availability.
Q: What is the difference between 11-bit and 12-bit resolution in temperature sensors?
A: Resolution determines the smallest temperature increment the sensor can distinguish. 11-bit resolution provides 0.0625°C increments, while 12-bit resolution provides 0.0625°C increments with finer granularity. For applications requiring the original TMP75AIDRG4 specifications, 11-bit resolution is sufficient. The ADT75ARZ series offers 12-bit resolution as an enhanced alternative.
Q: Are Microchip AT30TS series components compatible with TMP75AIDRG4?
A: Yes, with design considerations. The AT30TS74-SS8M-T, AT30TS75A-SS8M-T, AT30TSE752A-SS8M-T, and AT30TSE754A-SS8M-B share the same 8-SOIC package, I2C/SMBus interface, and operating temperature range. Key differences include lower minimum supply voltage (1.7V) and extended sensing temperature range (-55°C). These components are pin-compatible and functionally compatible with identical accuracy specifications.
Q: What does MSL (Moisture Sensitivity Level) mean for component selection?
A: MSL indicates the maximum time a component can be exposed to moisture before soldering. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) requires moisture control during storage and handling. For applications with standard manufacturing processes, both MSL levels are acceptable. MSL 1 components offer greater flexibility in inventory management.
Q: Can I use ADT75ARZ-REEL instead of TMP75AIDRG4?
A: Yes. The ADT75ARZ-REEL is compatible with identical supply voltage (2.7V ~ 5.5V), accuracy (±2°C / ±3°C), and 8-SOIC packaging. The primary difference is 12-bit resolution versus 11-bit, providing finer temperature measurement granularity. Firmware may require adjustment to process the additional resolution bits. The extended sensing temperature range (-55°C ~ 125°C) supports broader operational capability.
Q: What packaging options are available for substitute parts?
A: Substitute parts are available in Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Tube packaging. Cut Tape and Tape & Reel formats support automated assembly processes. Tube packaging is suitable for manual assembly or lower-volume applications. All packaging formats maintain identical electrical and mechanical specifications.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All recommended substitute parts (TMP75AIDR, ADT75ARZ series, and AT30TS series) are ROHS3 compliant and REACH unaffected, maintaining regulatory compatibility with the original TMP75AIDRG4 application requirements.
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