AT30TS750-XM8-T Equivalent & Substitute Parts

Part Overview

The AT30TS750-XM8-T is a digital temperature sensor manufactured by Microchip Technology, designed for local temperature measurement across the -55°C to 125°C range with 11-bit resolution and I2C/SMBus interface. The device operates on a 2.7V to 5.5V supply and features programmable limits, output switching, and shutdown mode capabilities in an 8-TSSOP/MSOP package.

This part is classified as Obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Active alternatives from Microchip Technology and other manufacturers provide compatible functionality with enhanced availability and updated product status.

Key Parameters

Parameter	Value
Sensor Type	Digital, Local
Sensing Temperature Range	-55°C ~ 125°C
Output Type	I2C/SMBus
Supply Voltage	2.7V ~ 5.5V
Resolution	11 bits
Package Type	8-TSSOP/8-MSOP
Accuracy	±1°C (0°C ~ 85°C), ±3°C (-40°C ~ 125°C)
Features	One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AT30TS750-XM8-T are classified based on the following substitution criteria:

Direct Equivalent (Microchip Technology):

AT30TS750A-XM8M-T: Active product status, identical sensing range (-55°C ~ 125°C), 11-bit resolution, I2C/SMBus interface, 8-TSSOP/MSOP package, supply voltage 1.7V ~ 5.5V (enhanced lower voltage capability), same accuracy specifications, same feature set.

Compatible Substitutes (Manufacturer Recommended): Substitution is based on matching the following core parameters:

Sensing temperature range: -55°C ~ 125°C
Output interface: I2C compatible
Package type: 8-TSSOP or 8-VSSOP (mechanically compatible)
Mounting: Surface mount
Operating temperature: -55°C ~ 125°C
RoHS3 compliance and MSL rating

Variations in resolution (9-bit vs. 11-bit), accuracy tolerance, supply voltage range, and feature availability are documented for each substitute to enable informed selection based on application requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Range	Resolution	Output Type	Supply Voltage	Accuracy (0°C~85°C / -40°C~125°C)	Package	Features
AT30TS750-XM8-T	Microchip Technology	Obsolete	-55°C ~ 125°C	11 b	I2C/SMBus	2.7V ~ 5.5V	±1°C / ±3°C	8-TSSOP/MSOP	One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode
AT30TS750A-XM8M-T	Microchip Technology	Active	-55°C ~ 125°C	11 b	I2C/SMBus	1.7V ~ 5.5V	±1°C / ±3°C	8-TSSOP/MSOP	One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode
LM75ADP,118	NXP USA Inc.	Active	-55°C ~ 125°C	11 b	I2C	2.8V ~ 5.5V	±2°C / ±3°C	8-TSSOP	Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode
LM75AIMM/NOPB	Texas Instruments	Obsolete	-55°C ~ 125°C	9 b	I2C	2.7V ~ 5.5V	±2°C / ±3°C	8-VSSOP	Output Switch, Programmable Limit
LM75AIMME/NOPB	Texas Instruments	Obsolete	-55°C ~ 125°C	9 b	I2C	2.7V ~ 5.5V	±2°C / ±3°C	8-VSSOP	Output Switch, Programmable Limit
LM75AIMMX/NOPB	Texas Instruments	Active	-55°C ~ 125°C	9 b	I2C	2.7V ~ 5.5V	±2°C / ±3°C	8-VSSOP	Output Switch, Programmable Limit
LM75BDP,118	NXP USA Inc.	Active	-55°C ~ 125°C	11 b	I2C	2.8V ~ 5.5V	±2°C / ±3°C	8-TSSOP	Output Switch, Programmable Limit
LM75BIMM-3+	Analog Devices Inc./Maxim Integrated	Active	-55°C ~ 125°C	9 b	I2C	3V ~ 5.5V	±2°C / ±3°C	8-uMAX/uSOP	Output Switch, Programmable Limit, Shutdown Mode
LM75BIMM-3/NOPB	Texas Instruments	Obsolete	-55°C ~ 125°C	9 b	I2C	3V ~ 5.5V	±2°C / ±3°C	8-VSSOP	Output Switch, Programmable Limit, Shutdown Mode
LM75BIMM-5+	Analog Devices Inc./Maxim Integrated	Active	-55°C ~ 125°C	9 b	I2C	3V ~ 5.5V	±2°C / ±3°C	8-uMAX/uSOP	Output Switch, Programmable Limit, Shutdown Mode
LM75BIMM-5/NOPB	Texas Instruments	Obsolete	-55°C ~ 125°C	9 b	I2C	3V ~ 5.5V	±2°C / ±3°C	8-VSSOP	Output Switch, Programmable Limit, Shutdown Mode

Engineering Selection Recommendations

Primary Recommendation: AT30TS750A-XM8M-T This Microchip Technology part is the direct active equivalent with identical electrical specifications, feature set, and package. It maintains 11-bit resolution and the full feature complement including programmable resolution. Supply voltage range is enhanced (1.7V minimum vs. 2.7V). Product status is Active with robust inventory availability. RoHS3 compliance and MSL rating are identical.

Secondary Recommendation: LM75ADP,118 or LM75BDP,118 (NXP USA Inc.) Both parts are Active products with full temperature range coverage (-55°C ~ 125°C) and 8-TSSOP package compatibility. LM75ADP,118 provides 11-bit resolution matching the original part. LM75BDP,118 also offers 11-bit resolution. Both maintain RoHS3 compliance. Accuracy tolerance is ±2°C (0°C ~ 85°C) versus ±1°C for the original, representing a minor specification relaxation. Supply voltage minimum is 2.8V versus 2.7V.

Alternative Consideration: LM75AIMMX/NOPB (Texas Instruments) This part is Active with full temperature range and I2C interface. Resolution is 9-bit (versus 11-bit original), representing reduced measurement granularity. Supply voltage range matches the original (2.7V ~ 5.5V). Package is 8-VSSOP, which is mechanically compatible but differs from 8-TSSOP. Accuracy is ±2°C (0°C ~ 85°C). Programmable resolution feature is not available.

Avoid: Obsolete Parts LM75AIMM/NOPB, LM75AIMME/NOPB, LM75BIMM-3/NOPB, and LM75BIMM-5/NOPB are classified as Obsolete. While inventory is available, these parts do not represent sustainable long-term solutions for new designs or ongoing production.

Frequently Asked Questions (FAQ)

Q: Can AT30TS750A-XM8M-T be used as a direct drop-in replacement for AT30TS750-XM8-T? A: Yes. Both parts share identical electrical specifications, feature set, package type (8-TSSOP/MSOP), and accuracy ratings. The primary difference is product status (Active vs. Obsolete) and enhanced lower supply voltage capability (1.7V vs. 2.7V minimum). No design changes are required.

Q: What is the difference between 11-bit and 9-bit resolution? A: Resolution determines measurement granularity. 11-bit resolution provides 2048 discrete temperature steps across the -55°C to 125°C range, while 9-bit resolution provides 512 steps. For applications requiring fine temperature discrimination, 11-bit parts (AT30TS750A-XM8M-T, LM75ADP,118, LM75BDP,118) are preferred. For applications with coarser temperature monitoring requirements, 9-bit alternatives are acceptable.

Q: Are 8-TSSOP and 8-VSSOP packages mechanically interchangeable? A: Both packages are 8-pin surface mount with 0.118" (3.00mm) width and similar pin pitch. Physical footprints are compatible for PCB layout purposes. However, verify pinout compatibility with specific datasheets, as pin assignments may differ between manufacturers.

Q: What is the impact of ±2°C accuracy versus ±1°C accuracy? A: The original AT30TS750-XM8-T specifies ±1°C accuracy over 0°C to 85°C. Substitute parts with ±2°C accuracy have twice the tolerance band. For applications with tight temperature control requirements, this difference is significant. For general monitoring applications, ±2°C accuracy is typically acceptable.

Q: Can I use a 9-bit resolution part if my application requires 11-bit resolution? A: No. If your application firmware or system design depends on 11-bit resolution output, 9-bit alternatives will not function correctly. Use only 11-bit parts: AT30TS750A-XM8M-T, LM75ADP,118, or LM75BDP,118.

Q: What supply voltage range should I verify for my application? A: The original part operates on 2.7V to 5.5V. Most substitutes operate on 2.8V to 5.5V (NXP parts) or 3V to 5.5V (Analog Devices/Maxim parts). If your system supplies 2.7V, use AT30TS750A-XM8M-T or LM75AIMMX/NOPB. For 2.8V or higher supplies, all recommended parts are suitable.

Q: Are all recommended parts RoHS3 compliant? A: Yes. All parts listed in the Parameter Comparison table are RoHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity level).

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