CAT28F010GI90 Equivalent & Substitute Parts

Part Overview

The CAT28F010GI90 is a 1Mbit parallel FLASH memory IC manufactured by onsemi, housed in a 32-PLCC package with 90 ns access time. This device is classified as obsolete, making equivalent substitute parts necessary for ongoing system support and new design implementations. The part operates within the 4.5V to 5.5V supply range and supports industrial temperature specifications from -40°C to 85°C.

Substiute Parts

CAT28F010GI90

onsemiIn Stock: 1095CAT28F010GI90 Datasheet

Current PartRFQ

SST39SF010A-55-4I-NHE

Microchip TechnologyIn Stock: 1634SST39SF010A-55-4I-NHE Datasheet

SimilarRFQ

SST39SF010A-70-4I-NHE

Microchip TechnologyIn Stock: 1788SST39SF010A-70-4I-NHE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the CAT28F010GI90 is based on strict equivalence across the following parameters:

• Memory capacity: 1Mbit
• Memory organization: 128K x 8
• Memory format: FLASH (non-volatile)
• Memory interface: Parallel
• Package type: 32-PLCC (11.43x13.97)
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Mounting type: Surface Mount

The substitute parts identified are from the Microchip Technology SST39 MPF™ series. Both SST39SF010A variants meet all mechanical and electrical compatibility requirements. Access time specifications for substitute parts (55 ns and 70 ns) are equal to or faster than the original 90 ns specification, ensuring functional compatibility in timing-critical applications.

Parameter Comparison

Engineering Selection Recommendations

Both SST39SF010A variants from Microchip Technology are active products with full availability, addressing the obsolescence status of the CAT28F010GI90. Selection between the two substitute options depends on access time requirements:

SST39SF010A-70-4I-NHE provides 70 ns access time, closest to the original 90 ns specification, and carries DiGi-Electronics Programmable verification status. This variant is recommended for applications where timing margins are critical or where existing firmware has been validated against this speed grade.

SST39SF010A-55-4I-NHE offers 55 ns access time, providing improved performance headroom. This variant is suitable for applications where faster memory access enhances overall system performance without timing constraints.

Both parts maintain identical supply voltage ranges, operating temperature specifications, package dimensions, and MSL ratings. Both are RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SST39SF010A parts directly replace the CAT28F010GI90 in existing designs?

A: Yes. Both SST39SF010A variants are pin-compatible and functionally equivalent. They share identical package dimensions (32-PLCC, 11.43x13.97), memory capacity (1Mbit), organization (128K x 8), supply voltage range (4.5V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). No PCB modifications are required.

Q: What is the difference between the two SST39SF010A substitute options?

A: The primary difference is access time. SST39SF010A-55-4I-NHE operates at 55 ns, while SST39SF010A-70-4I-NHE operates at 70 ns. Both are faster than the original 90 ns specification. The 70 ns variant has verified programmable status and closer timing alignment to the original part.

Q: Are there any compliance or regulatory differences between the original and substitute parts?

A: No. All parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS codes (8542.32.0071). The substitute parts are RoHS3 compliant, meeting current regulatory standards.

Q: What is the moisture sensitivity level, and does it affect handling?

A: All parts carry MSL 3 rating (168 Hours). This indicates standard moisture sensitivity requiring controlled storage and handling conditions. No differences exist between the original and substitute parts in this regard.

Q: Why is the original CAT28F010GI90 classified as obsolete?

A: Obsolescence reflects onsemi's discontinuation of this product line. The SST39 MPF™ series from Microchip Technology represents the active equivalent technology, ensuring long-term availability and supply chain continuity.