MAX6373KA Equivalent & Substitute Parts

Part Overview

The MAX6373KA is a supervisor integrated circuit from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) component. This device functions as a watchdog circuit with open drain or open collector output, designed to monitor a single voltage channel with adjustable threshold settings. The MAX6373KA is currently listed as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and component procurement.

Substiute Parts

MAX6373KA

Analog Devices Inc./Maxim IntegratedIn Stock: 1393MAX6373KA Datasheet

Current PartRFQ

MAX6373KA+

Analog Devices Inc./Maxim IntegratedIn Stock: 3463MAX6373KA+ Datasheet

DirectRFQ

MAX6369KA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2275MAX6369KA+ Datasheet

Parametric EquivalentRFQ

MAX6371KA

Analog Devices Inc./Maxim IntegratedIn Stock: 2109MAX6371KA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX6373KA is determined by strict equivalence across the following parameters: watchdog circuit functionality, single-channel voltage monitoring capability, adjustable/selectable voltage threshold, open drain or open collector output configuration, active low reset operation, adjustable/selectable reset timeout, operating temperature range of -40°C to 125°C, surface mount technology, SOT-23-8 package, and identical ECCN and HTSUS classifications.

The substitute parts identified—MAX6373KA+, MAX6369KA+, and MAX6371KA—maintain functional and electrical equivalence across these core parameters. All substitute parts operate within the same temperature range, utilize the same package form factor, and provide identical watchdog circuit functionality with adjustable thresholds and timeouts.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete MAX6373KA, the MAX6373KA+ is the primary direct substitute. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance, providing improved regulatory alignment and supply chain continuity.

The MAX6369KA+ and MAX6371KA are parametric equivalents that satisfy all core functional requirements. Both parts are active products with full watchdog circuit capability, adjustable voltage thresholds, and adjustable reset timeouts. The MAX6369KA+ offers ROHS3 compliance and unlimited moisture sensitivity rating. The MAX6371KA maintains RoHS non-compliance status consistent with the original MAX6373KA but carries a moisture sensitivity level of 3 (168 hours), requiring controlled storage conditions.

Selection between these three active alternatives should be based on regulatory compliance requirements, supply availability, and moisture handling capabilities specific to the application environment.

Frequently Asked Questions (FAQ)

Q: Can MAX6373KA+ be used as a direct replacement for MAX6373KA?

A: Yes. The MAX6373KA+ maintains identical electrical specifications, functional characteristics, and SOT-23-8 package form factor. The primary difference is product status (active versus obsolete) and improved RoHS3 compliance.

Q: What are the key differences between MAX6369KA+ and MAX6371KA?

A: Both parts function as watchdog circuits with single-channel voltage monitoring and adjustable thresholds. The MAX6369KA+ carries ROHS3 compliance and MSL 1 (unlimited moisture sensitivity), while MAX6371KA maintains RoHS non-compliance and MSL 3 (168-hour moisture sensitivity). Both operate within the same temperature range and use the SOT-23-8 package.

Q: Are all substitute parts pin-compatible with MAX6373KA?

A: All substitute parts utilize the SOT-23-8 package form factor. Pin compatibility must be verified against specific application schematics and the functional requirements of each watchdog circuit variant.

Q: What is the significance of MSL ratings for these parts?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to moisture before soldering. MAX6373KA, MAX6373KA+, and MAX6369KA+ carry MSL 1 (unlimited exposure). MAX6371KA carries MSL 3, requiring storage in controlled humidity conditions and limiting exposure to 168 hours before reflow soldering.

Q: Why is MAX6373KA listed as obsolete?

A: The MAX6373KA has been discontinued by the manufacturer. Active alternatives (MAX6373KA+, MAX6369KA+, MAX6371KA) are available to support ongoing design and procurement requirements.