ASM811LEUSF-T Equivalent & Substitute Parts

Part Overview

The ASM811LEUSF-T is a single-channel supervisor IC manufactured by onsemi, designed for power management and reset control applications. This device monitors a single voltage threshold at 4.63V and provides active-low reset output with a 140ms minimum timeout. The component is housed in a SOT-143 surface-mount package.

The ASM811LEUSF-T has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this supervisor function.

Substiute Parts

ASM811LEUSF-T

onsemiIn Stock: 16928ASM811LEUSF-T Datasheet

Current PartRFQ

MAX6315US46D3+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1417MAX6315US46D3+T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASM811LEUSF-T is determined by the following critical parameters:

• Voltage Threshold Matching: 4.63V threshold requirement
• Reset Logic: Active-low reset output configuration
• Reset Timeout: 140ms minimum timeout specification
• Package Compatibility: SOT-143 surface-mount package (TO-253-4, TO-253AA)
• Single-Channel Monitoring: 1 voltage channel requirement
• Operating Temperature Range: Minimum coverage of -40°C to 105°C
• Mounting Type: Surface-mount technology

The MAX6315US46D3+T from Analog Devices Inc./Maxim Integrated meets all critical substitution criteria. This part maintains functional equivalence through matching voltage threshold, reset logic, timeout specification, and package form factor. The substitute part is currently in active production status, ensuring long-term availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

The MAX6315US46D3+T is the qualified substitute for the obsolete ASM811LEUSF-T. Selection is based on the following engineering criteria:

Functional Equivalence: Both parts maintain identical voltage threshold (4.63V), reset logic (active-low), and reset timeout (140ms minimum) specifications. Single-channel voltage monitoring is preserved across both devices.

Package Compatibility: Both components utilize the SOT-143 surface-mount package in TO-253-4 and TO-253AA configurations, enabling direct board-level substitution without layout modifications.

Product Status and Supply Chain: The MAX6315US46D3+T maintains active production status with Analog Devices Inc./Maxim Integrated, ensuring sustained component availability and long-term supply chain reliability compared to the obsolete ASM811LEUSF-T.

Compliance and Certifications: Both parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8542.39.0001). The substitute part carries RoHS3 compliance certification.

Operating Temperature: The MAX6315US46D3+T extends the upper operating temperature limit to 125°C, providing enhanced thermal margin compared to the 105°C specification of the original part.

Frequently Asked Questions (FAQ)

Q: Can the MAX6315US46D3+T directly replace the ASM811LEUSF-T without circuit modifications?

A: Yes. Both parts share identical voltage threshold (4.63V), reset logic (active-low), reset timeout (140ms minimum), and SOT-143 package configuration. Direct substitution is supported at the board level without schematic or layout changes.

Q: What is the primary difference between these two supervisor ICs?

A: The MAX6315US46D3+T specifies an open-drain or open-collector output configuration, while the ASM811LEUSF-T output type is not specified in the provided data. Both maintain the same active-low reset logic and 140ms timeout. The substitute part also extends the operating temperature range to 125°C and maintains active production status.

Q: Are there any compliance or certification differences?

A: Both parts share REACH Unaffected status, EAR99 ECCN classification, and 8542.39.0001 HTSUS code. The MAX6315US46D3+T additionally carries RoHS3 compliance certification. Moisture sensitivity level remains identical at MSL 1 (Unlimited) for both devices.

Q: Is the SOT-143 package identical between both parts?

A: Yes. Both the ASM811LEUSF-T and MAX6315US46D3+T utilize the SOT-143 surface-mount package with TO-253-4 and TO-253AA case designations. Pin configuration and footprint are compatible for direct board-level substitution.

Q: What is the availability status of each part?

A: The ASM811LEUSF-T is classified as obsolete. The MAX6315US46D3+T maintains active production status with Analog Devices Inc./Maxim Integrated, ensuring ongoing availability for new designs and production requirements.