CAT810SSDI-GT3 Equivalent & Substitute Parts

Part Overview

The CAT810SSDI-GT3 is a single-channel power supply supervisor IC manufactured by onsemi, designed for power-on reset and simple reset applications. This component operates as a push-pull, totem pole output supervisor with a 2.93V threshold voltage and 140ms minimum reset timeout. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

CAT810SSDI-GT3

onsemiIn Stock: 858CAT810SSDI-GT3 Datasheet

Current PartRFQ

MAX6327XR29+T

Analog Devices Inc./Maxim IntegratedIn Stock: 15666MAX6327XR29+T Datasheet

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MAX810SEXR+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2003MAX810SEXR+T Datasheet

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MIC810SYC3-TR

Microchip TechnologyIn Stock: 1065MIC810SYC3-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CAT810SSDI-GT3 are qualified based on the following electrical and mechanical parameters:

• Single-channel voltage monitoring with identical 2.93V threshold voltage
• Push-pull, totem pole output configuration for direct functional replacement
• Active high reset signal with minimum 140ms reset timeout
• SC-70 / SOT-323 surface mount package for PCB compatibility
• Single voltage monitored (1 channel)
• Moisture Sensitivity Level 1 (unlimited shelf life)
• REACH Unaffected and EAR99 classification for regulatory consistency

The three qualified substitutes—MAX6327XR29+T, MAX810SEXR+T, and MIC810SYC3-TR—meet all core electrical and mechanical requirements. Differences in product status, operating temperature range, and reset timeout specifications are noted in the parameter comparison.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with current manufacturing status, providing long-term availability compared to the obsolete CAT810SSDI-GT3. Selection should be based on the following criteria:

MAX810SEXR+T offers the widest operating temperature range (-40°C ~ 125°C), making it suitable for applications requiring extended thermal performance beyond the standard -40°C ~ 85°C range.

MAX6327XR29+T and MIC810SYC3-TR maintain the standard operating temperature range (-40°C ~ 85°C) matching the original part. Both are ROHS3 compliant and carry active product status.

Reset Timeout Consideration: MAX6327XR29+T specifies a 100ms minimum reset timeout, which is shorter than the original 140ms specification. Applications with timing-critical reset sequencing should verify compatibility with this parameter.

All substitute parts maintain identical voltage threshold (2.93V), output configuration (push-pull, totem pole), reset polarity (active high), and package form factor (SC-70, SOT-323), ensuring direct functional replacement at the circuit level.

Frequently Asked Questions (FAQ)

Q: Can MAX6327XR29+T be used as a direct replacement for CAT810SSDI-GT3?

A: MAX6327XR29+T meets all core electrical and mechanical requirements: identical 2.93V threshold, push-pull totem pole output, active high reset, SC-70 package, and single-channel monitoring. The 100ms reset timeout is shorter than the original 140ms specification; verify this does not conflict with system reset sequencing requirements.

Q: What is the difference between MAX810SEXR+T and MIC810SYC3-TR?

A: Both parts share identical electrical specifications (2.93V threshold, 140ms reset timeout, active high reset, push-pull output) and package form factor. MAX810SEXR+T is manufactured by Analog Devices Inc./Maxim Integrated with an extended operating temperature range (-40°C ~ 125°C). MIC810SYC3-TR is manufactured by Microchip Technology with standard operating temperature range (-40°C ~ 85°C). Selection depends on thermal requirements and preferred supplier.

Q: Are all substitute parts RoHS compliant?

A: Yes. MAX6327XR29+T, MAX810SEXR+T, and MIC810SYC3-TR are all ROHS3 compliant. The original CAT810SSDI-GT3 RoHS status was not specified in available documentation.

Q: Will the substitute parts fit the same PCB footprint?

A: Yes. All substitute parts use the SC-70 / SOT-323 surface mount package, identical to the original CAT810SSDI-GT3. PCB layout and footprint modifications are not required.

Q: Why is the CAT810SSDI-GT3 listed as obsolete?

A: The original part is no longer manufactured by onsemi. The three active substitute parts provide equivalent functionality and ensure design continuity for new production and field replacements.