CAT809SSDI-T3 Equivalent & Substitute Parts

Part Overview

The CAT809SSDI-T3 is a Power Management Integrated Circuit (PMIC) functioning as a microprocessor unit supervisor with push-pull output configuration. Manufactured by onsemi in SC-70 surface mount packaging, this device monitors a single voltage threshold at 2.93V and provides active-low reset functionality with a 140ms minimum timeout. The product is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

CAT809SSDI-T3

onsemiIn Stock: 998CAT809SSDI-T3 Datasheet

Current PartRFQ

MIC809SYC3-TR

Microchip TechnologyIn Stock: 890MIC809SYC3-TR Datasheet

SimilarRFQ

MIC809-5SYC3-TR

Microchip TechnologyIn Stock: 3790MIC809-5SYC3-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAT809SSDI-T3 is determined by strict equivalence across the following critical parameters:

• Voltage Threshold: 2.93V (single voltage monitoring)
• Output Type: Push-Pull, Totem Pole configuration
• Reset Logic: Active Low
• Reset Timeout: 140ms Minimum
• Operating Temperature: -40°C ~ 85°C (TA)
• Package: SC-70, SOT-323 (SC-70-3)
• Mounting: Surface Mount

Substitute parts must match all parameters listed above to ensure functional and mechanical compatibility. The identified substitutes are Microchip Technology MIC809SYC3-TR and MIC809-5SYC3-TR, both of which maintain identical electrical specifications and packaging requirements.

Parameter Comparison

Engineering Selection Recommendations

Both MIC809SYC3-TR and MIC809-5SYC3-TR are direct functional equivalents to the obsolete CAT809SSDI-T3. Selection between these two Microchip Technology alternatives should be based on the following factors:

Product Status: Both substitute parts carry Active product status, ensuring long-term availability and manufacturing support compared to the obsolete CAT809SSDI-T3.

Compliance: Both MIC809SYC3-TR and MIC809-5SYC3-TR are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic component procurement.

Inventory Availability: MIC809-5SYC3-TR maintains higher stock levels (3770 Pcs) compared to MIC809SYC3-TR (831 Pcs), providing supply chain advantages for volume production.

Packaging: Both parts are supplied in Tape & Reel (TR) format, suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can MIC809SYC3-TR and MIC809-5SYC3-TR be used interchangeably with CAT809SSDI-T3?

A: Yes. Both Microchip Technology parts maintain identical electrical specifications including 2.93V threshold voltage, push-pull totem pole output, active-low reset logic, 140ms minimum reset timeout, and -40°C to 85°C operating temperature range. Package and pinout are identical (SC-70, SOT-323).

Q: What is the difference between MIC809SYC3-TR and MIC809-5SYC3-TR?

A: Both parts are functionally equivalent with identical electrical and mechanical parameters. The primary difference is inventory availability, with MIC809-5SYC3-TR maintaining significantly higher stock levels.

Q: Are there any compliance differences between the substitute parts and the original CAT809SSDI-T3?

A: The substitute parts (MIC809SYC3-TR and MIC809-5SYC3-TR) are ROHS3 Compliant, providing enhanced regulatory compliance compared to the original part. Both maintain REACH Unaffected status.

Q: Is the SC-70 package compatible with existing PCB designs for CAT809SSDI-T3?

A: Yes. All three parts use identical SC-70, SOT-323 packaging with SC-70-3 supplier device package designation, ensuring direct mechanical and electrical compatibility on existing circuit boards.

Q: What is the moisture sensitivity level for these supervisor ICs?

A: All three parts (CAT809SSDI-T3, MIC809SYC3-TR, and MIC809-5SYC3-TR) have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage and handling.