AT30TSE752-XM8-B Equivalent & Substitute Parts

Part Overview

The AT30TSE752-XM8-B is a digital temperature sensor manufactured by Microchip Technology, designed for local temperature measurement across a -55°C to 125°C range with 11-bit resolution and I2C/SMBus output interface. The device operates on a 2.7V to 5.5V supply and is housed in an 8-TSSOP/MSOP package.

This part is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems currently utilizing this component.

Substiute Parts

AT30TSE752-XM8-B

Microchip TechnologyIn Stock: 1153AT30TSE752-XM8-B Datasheet

Current PartRFQ

AT30TSE752A-XM8M-B

Microchip TechnologyIn Stock: 2087AT30TSE752A-XM8M-B Datasheet

DirectRFQ

MAX6652AUB+

Analog Devices Inc./Maxim IntegratedIn Stock: 3763MAX6652AUB+ Datasheet

MFR RecommendedRFQ

MAX6652AUB+T

Analog Devices Inc./Maxim IntegratedIn Stock: 12781MAX6652AUB+T Datasheet

MFR RecommendedRFQ

MAX6683AUB+

Analog Devices Inc./Maxim IntegratedIn Stock: 907MAX6683AUB+ Datasheet

MFR RecommendedRFQ

MAX6683AUB+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3112MAX6683AUB+T Datasheet

MFR RecommendedRFQ

NCT75DMR2G

onsemiIn Stock: 18203NCT75DMR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT30TSE752-XM8-B is determined by the following critical parameters:

Primary Compatibility Criteria:

• Output interface: I2C/SMBus protocol
• Sensing temperature range: Minimum -55°C to 125°C coverage
• Supply voltage overlap: Minimum 2.7V to 5.5V range
• Resolution: 11-bit or equivalent
• Sensor type: Digital, local temperature measurement
• Package form factor: 8-pin TSSOP/MSOP or compatible pinout

Substitute Categories:

Category 1: Direct Microchip Equivalent

• AT30TSE752A-XM8M-B: Active product status, identical sensing range, improved supply voltage range (1.7V ~ 5.5V), enhanced accuracy (±1°C best case), same package family, tube packaging

Category 2: Maxim Integrated Temperature Monitoring ICs

• MAX6652AUB+ and MAX6652AUB+T: Internal sensor topology, -40°C ~ 125°C range, ±2°C accuracy, I2C/SMBus interface, 10-pin TFSOP/MSOP package, different packaging options
• MAX6683AUB+ and MAX6683AUB+T: Internal sensor topology, -40°C ~ 125°C range, ±3°C accuracy, I2C/SMBus interface, 10-pin TFSOP/MSOP package, different packaging options

Category 3: onsemi Temperature Sensor

• NCT75DMR2G: Digital local sensor, -55°C ~ 125°C range, 11-bit resolution, ±1°C accuracy, I2C/SMBus interface, 8-MSOP package, active product status

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitute: AT30TSE752A-XM8M-B

The AT30TSE752A-XM8M-B is the primary recommended substitute. It maintains Microchip Technology as the manufacturer, shares identical package geometry (8-TSSOP/8-MSOP), and holds active product status. This part offers improved specifications including extended lower supply voltage limit (1.7V vs. 2.7V) and enhanced accuracy (±1°C best case vs. ±1.5°C). Pin-level compatibility and protocol equivalence ensure direct replacement capability with minimal design modification.

Alternative Substitute: NCT75DMR2G

The NCT75DMR2G from onsemi provides an alternative with matching 8-pin package form factor, identical sensing temperature range (-55°C ~ 125°C), and equivalent 11-bit resolution. This part maintains active product status and ROHS3 compliance. The ±1°C accuracy specification matches the AT30TSE752A-XM8M-B. Supply voltage range (3V ~ 5.5V) is narrower than the original part but remains compatible with standard 3.3V and 5V system designs.

Secondary Alternatives: MAX6652AUB+, MAX6652AUB+T, MAX6683AUB+, MAX6683AUB+T

The Maxim Integrated temperature monitoring ICs (MAX6652 and MAX6683 series) provide functional substitution with I2C/SMBus interface compatibility. These parts employ internal sensor topology rather than local external sensing. The 10-pin TFSOP/MSOP package requires PCB layout modification. Sensing temperature range (-40°C ~ 125°C) does not extend to -55°C, limiting suitability for applications requiring full lower temperature coverage. These options are suitable only when the -40°C lower limit is acceptable and PCB redesign is feasible.

Compliance Considerations

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory standing. Moisture sensitivity levels (MSL 1 or MSL 3) are acceptable for standard handling and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can AT30TSE752A-XM8M-B directly replace AT30TSE752-XM8-B without PCB modification?

A: Yes. Both parts share identical 8-pin TSSOP/MSOP package geometry and pinout. The AT30TSE752A-XM8M-B is a direct pin-compatible substitute requiring no PCB layout changes.

Q: What is the key difference between the Microchip AT30TSE752A and the onsemi NCT75DMR2G?

A: Both are 8-pin digital temperature sensors with I2C/SMBus output and -55°C ~ 125°C sensing range. The primary difference is manufacturer and supply voltage range. The NCT75DMR2G requires minimum 3V supply, while the AT30TSE752A operates from 1.7V. For 3.3V and 5V systems, both are functionally equivalent.

Q: Why do the Maxim Integrated parts (MAX6652, MAX6683) have different package pin counts?

A: The MAX6652 and MAX6683 series use 10-pin TFSOP/MSOP packages compared to the 8-pin TSSOP/MSOP of the original part. This package difference requires PCB redesign and is not a direct drop-in replacement. These parts are suitable only when design modification is acceptable.

Q: Are the MAX6652AUB+ and MAX6652AUB+T functionally identical?

A: Yes. Both MAX6652AUB+ and MAX6652AUB+T are functionally identical temperature monitoring ICs. The difference is packaging format: MAX6652AUB+ is supplied in tube packaging, while MAX6652AUB+T is supplied in cut tape and Digi-Reel format. Selection depends on procurement and assembly requirements.

Q: What is the significance of the -40°C lower limit in MAX6652 and MAX6683 parts compared to the -55°C of the original?

A: The original AT30TSE752-XM8-B and its substitute NCT75DMR2G support -55°C minimum sensing temperature. The MAX6652 and MAX6683 series support only -40°C minimum. If your application requires temperature measurement below -40°C, these Maxim parts are not suitable. Verify your system's minimum operating temperature requirement before selecting these alternatives.

Q: Can I use NCT75DMR2G in a 2.7V supply system?

A: No. The NCT75DMR2G requires minimum 3V supply voltage. If your system operates at 2.7V, this part is not compatible. The AT30TSE752A-XM8M-B, which operates from 1.7V, is the appropriate choice for lower voltage systems.

Q: What does "Active" product status mean compared to "Obsolete"?

A: Active product status indicates the part is currently manufactured and supported by the vendor with ongoing availability. Obsolete status indicates the part is no longer manufactured and existing inventory is limited. All recommended substitutes carry active status, ensuring long-term supply chain availability.