CAT28F010GI-90T Equivalent & Substitute Parts

Part Overview

The CAT28F010GI-90T 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, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

CAT28F010GI-90T

onsemiIn Stock: 910CAT28F010GI-90T Datasheet

Current PartRFQ

SST39SF010A-55-4I-NHE-T

Microchip TechnologyIn Stock: 2161SST39SF010A-55-4I-NHE-T Datasheet

SimilarRFQ

SST39SF010A-70-4I-NHE-T

Microchip TechnologyIn Stock: 17446SST39SF010A-70-4I-NHE-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CAT28F010GI-90T are qualified based on the following critical parameters:

• Memory Capacity & Organization: 1Mbit capacity with 128K x 8 organization
• Interface Type: Parallel interface architecture
• Package Compatibility: 32-PLCC (11.43x13.97) form factor with identical pinout
• Electrical Specifications: Supply voltage range 4.5V ~ 5.5V
• Operating Temperature Range: -40°C ~ 85°C
• Access Time: Equal to or faster than 90 ns
• Mounting Type: Surface mount configuration

The substitute parts listed below meet all these criteria and are pin-compatible replacements suitable for direct substitution in applications requiring CAT28F010GI-90T functionality.

Parameter Comparison

Engineering Selection Recommendations

Both SST39SF010A variants from Microchip Technology are active products with verified programmability and ROHS3 compliance, providing superior long-term availability compared to the obsolete CAT28F010GI-90T.

SST39SF010A-55-4I-NHE-T offers the fastest access time at 55 ns, exceeding the performance specification of the original part. This variant is suitable for applications where maximum speed is beneficial.

SST39SF010A-70-4I-NHE-T provides 70 ns access time, which meets the timing requirements of the CAT28F010GI-90T while maintaining active product status and full compliance certifications. This variant offers the highest inventory availability at 17,384 pieces.

Both substitutes maintain identical electrical specifications, package geometry, and operating parameters, ensuring direct functional compatibility in legacy system designs.

Frequently Asked Questions (FAQ)

Q: Are the SST39SF010A variants pin-compatible with the CAT28F010GI-90T?

A: Yes. Both substitute parts use the identical 32-PLCC (11.43x13.97) package with J-Lead configuration, ensuring direct pin-for-pin compatibility without PCB modifications.

Q: What is the difference between the two SST39SF010A variants?

A: The primary difference is access time: SST39SF010A-55-4I-NHE-T operates at 55 ns, while SST39SF010A-70-4I-NHE-T operates at 70 ns. Both exceed the 90 ns specification of the original part. Write cycle time is identical at 20µs for both variants.

Q: Can I use the faster 55 ns variant as a direct replacement?

A: Yes. The SST39SF010A-55-4I-NHE-T meets all electrical and mechanical requirements and provides improved performance characteristics. No design modifications are required.

Q: Are these substitutes available in the same packaging options?

A: The SST39SF010A-55-4I-NHE-T is supplied in Tape & Reel (TR) packaging. The SST39SF010A-70-4I-NHE-T is supplied in Cut Tape (CT) & Digi-Reel® packaging. Both are surface mount compatible.

Q: What compliance certifications do the substitute parts carry?

A: Both SST39SF010A variants are ROHS3 compliant and REACH unaffected, with identical ECCN (EAR99) and HTSUS (8542.32.0071) classifications to the original part.

Q: Is the operating temperature range identical across all three parts?

A: Yes. All three parts operate across the identical temperature range of -40°C to 85°C (TA), ensuring thermal compatibility in existing system designs.