PT7M7452STA6EX Equivalent & Substitute Parts

Part Overview

The PT7M7452STA6EX is a single-channel supervisor IC manufactured by Diodes Incorporated, designed for power management and reset circuit applications. This device features an open drain output, active low reset, and a 2.93V threshold voltage. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage monitoring, output configuration, and reset timing parameters while meeting current product availability and compliance standards.

Substiute Parts

PT7M7452STA6EX

Diodes IncorporatedIn Stock: 1126PT7M7452STA6EX Datasheet

Current PartRFQ

MAX6324BUT29+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3679MAX6324BUT29+T Datasheet

MFR RecommendedRFQ

MAX6343SUT+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1325MAX6343SUT+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PT7M7452STA6EX is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Single-channel voltage monitoring capability
• 2.93V threshold voltage
• Open drain or open collector output configuration
• Active low reset polarity
• SOT-23-6 package footprint compatibility
• Surface mount technology
• ROHS3 compliance and MSL 1 rating

Both substitute parts (MAX6324BUT29+T and MAX6343SUT+T) satisfy these core requirements. The MAX6324BUT29+T functions as a watchdog circuit variant, while the MAX6343SUT+T maintains the simple reset/power-on reset topology matching the original design. Both substitutes are manufactured by Analog Devices Inc./Maxim Integrated and carry active product status with expanded operating temperature ranges (-40°C ~ 125°C).

Parameter Comparison

Engineering Selection Recommendations

Both MAX6324BUT29+T and MAX6343SUT+T are qualified substitutes for the obsolete PT7M7452STA6EX. Selection between these two options depends on circuit topology requirements:

MAX6324BUT29+T is suitable for applications requiring watchdog circuit functionality with active product status and extended temperature range (-40°C ~ 125°C). This part is available in Cut Tape and Digi-Reel packaging formats.

MAX6343SUT+T maintains the simple reset/power-on reset architecture of the original PT7M7452STA6EX while providing active product status and extended temperature range. This part is supplied in Tape & Reel packaging.

Both substitutes exceed the original operating temperature specification and provide superior long-term availability through active manufacturing status. All three parts maintain identical voltage threshold (2.93V), output configuration (open drain), reset polarity (active low), and package footprint (SOT-23-6). Reset timeout specifications differ slightly (100ms minimum for substitutes versus 140ms minimum for the original), which is acceptable for most power management applications where the original 140ms specification was not a critical design constraint.

Frequently Asked Questions (FAQ)

Q: Can MAX6324BUT29+T and MAX6343SUT+T be used interchangeably with PT7M7452STA6EX?

A: Both parts are electrically compatible substitutes. The primary difference is functional topology: MAX6324BUT29+T implements watchdog circuit functionality, while MAX6343SUT+T maintains simple reset/power-on reset operation matching the original design. Select based on your circuit's reset control requirements.

Q: What is the impact of the reset timeout difference (140ms vs. 100ms)?

A: The substitute parts specify 100ms minimum reset timeout compared to the original 140ms minimum. This shorter timeout is acceptable in applications where the original specification was not a critical design parameter. If your circuit requires the extended 140ms timeout, verify that the substitute's 100ms minimum does not violate system reset sequencing requirements.

Q: Are the substitute parts pin-compatible with PT7M7452STA6EX?

A: Yes. All three parts use the SOT-23-6 package with identical pinout configuration for single-channel voltage monitoring, open drain output, and active low reset functionality.

Q: What is the advantage of the extended operating temperature range in the substitute parts?

A: The substitute parts operate across -40°C ~ 125°C compared to the original -40°C ~ 85°C range. This extended specification provides greater design margin for applications in elevated ambient temperature environments and improves long-term reliability in thermal stress conditions.

Q: Are there packaging format differences between the substitute options?

A: MAX6324BUT29+T is available in Cut Tape (CT) and Digi-Reel packaging. MAX6343SUT+T is supplied in Tape & Reel (TR) format. Select based on your procurement and assembly process requirements.

Q: Do all parts meet the same compliance standards?

A: Yes. PT7M7452STA6EX, MAX6324BUT29+T, and MAX6343SUT+T are all ROHS3 compliant with MSL 1 (Unlimited) rating and REACH unaffected status. ECCN and HTSUS classifications are identical across all three parts.