CAT823SSDI-GT3 Equivalent & Substitute Parts

Part Overview

The CAT823SSDI-GT3 is a single-channel power supply supervisor IC manufactured by onsemi, designed for simple reset and power-on reset applications. This component monitors a single voltage threshold at 2.93V and provides push-pull, totem pole output with active-low reset functionality. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

CAT823SSDI-GT3

onsemiIn Stock: 1707CAT823SSDI-GT3 Datasheet

Current PartRFQ

MAX823SEXK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 8711MAX823SEXK+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAT823SSDI-GT3 is determined by strict equivalence across the following critical parameters:

• Voltage Monitoring Capability: Single channel at 2.93V threshold
• Output Type: Push-pull, totem pole configuration
• Reset Behavior: Active-low reset with 140ms minimum timeout
• Operating Temperature Range: -40°C to 85°C
• Package Format: 5-TSSOP (SC-70-5, SOT-353)
• Mounting Technology: Surface mount

The MAX823SEXK+T from Analog Devices Inc./Maxim Integrated meets all these criteria and is classified as an active product, providing direct functional equivalence with improved availability.

Parameter Comparison

Engineering Selection Recommendations

The MAX823SEXK+T is the direct functional equivalent for the obsolete CAT823SSDI-GT3. Selection of this substitute is supported by:

• Complete Parameter Equivalence: All electrical and mechanical specifications match exactly
• Active Product Status: The MAX823SEXK+T is actively manufactured and supported, ensuring long-term availability
• Enhanced Compliance: The substitute carries ROHS3 compliance certification, meeting modern regulatory requirements
• Identical Packaging: Both parts use the 5-TSSOP (SC-70-5) package, enabling direct PCB compatibility without layout modifications
• Regulatory Alignment: Both parts share identical REACH status and ECCN classification

No design modifications are required when transitioning from the CAT823SSDI-GT3 to the MAX823SEXK+T.

Frequently Asked Questions (FAQ)

Q: Can the MAX823SEXK+T be used as a direct replacement for the CAT823SSDI-GT3?

A: Yes. The MAX823SEXK+T is a direct functional equivalent. All critical parameters—voltage threshold, output configuration, reset behavior, operating temperature range, and package format—are identical. No circuit modifications are necessary.

Q: Are there any package compatibility concerns?

A: No. Both parts use the 5-TSSOP (SC-70-5, SOT-353) package. The physical footprint, pin count, and pin assignments are identical, allowing direct PCB compatibility.

Q: What is the primary advantage of using the MAX823SEXK+T?

A: The MAX823SEXK+T is an active product with established supply chains and long-term availability. The CAT823SSDI-GT3 is obsolete, making the MAX823SEXK+T the recommended choice for new designs and ongoing production support.

Q: Does the substitute meet current regulatory requirements?

A: Yes. The MAX823SEXK+T carries ROHS3 compliance certification, meeting current environmental and regulatory standards. Both parts maintain identical REACH status and ECCN classification.

Q: Are the electrical characteristics identical?

A: Yes. The voltage threshold (2.93V), reset timeout (140ms minimum), output type (push-pull, totem pole), reset logic (active low), and operating temperature range (-40°C to 85°C) are identical across both parts.

Q: What is the moisture sensitivity level for the substitute?

A: The MAX823SEXK+T has an MSL rating of 1 (Unlimited), matching the original part. This indicates no moisture sensitivity restrictions for storage or handling.