AT45DB081E-SHNHC-T Equivalent & Substitute Parts

Part Overview

The AT45DB081E-SHNHC-T is a 8Mbit Serial Peripheral Interface (SPI) FLASH memory IC manufactured by Renesas Electronics Corporation. This non-volatile memory device operates at 85 MHz and is housed in an 8-SOIC surface mount package. The part is currently in active production status with 1626 units available in new original stock. Finding equivalent substitute parts is necessary to ensure supply chain continuity, manage inventory optimization, and maintain design flexibility across manufacturing batches.

Substiute Parts

AT45DB081E-SHNHC-T

Renesas Electronics CorporationIn Stock: 1693AT45DB081E-SHNHC-T Datasheet

Current PartRFQ

AT45DB081E-SHN2B-T

Renesas Electronics CorporationIn Stock: 1950AT45DB081E-SHN2B-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT45DB081E-SHN2B-T qualifies as a direct substitute for the AT45DB081E-SHNHC-T based on the following critical parameters:

• Memory Capacity & Interface: Both parts provide 8Mbit FLASH memory with SPI interface
• Clock Frequency: Both operate at 85 MHz
• Write Performance: Both maintain 8µs word write and 4ms page write cycle times
• Supply Voltage: Both support 1.7V ~ 3.6V operating range
• Temperature Range: Both rated for -40°C ~ 85°C operation
• Package & Mounting: Both use 8-SOIC surface mount package with identical physical dimensions (0.209", 5.30mm Width)
• Compliance: Both are ROHS3 compliant with MSL 1 rating
• Manufacturer: Both manufactured by Renesas Electronics Corporation under the AT45DB081 base product line

The only documented difference is memory organization: AT45DB081E-SHNHC-T uses 264 Bytes x 4096 pages, while AT45DB081E-SHN2B-T uses 256 Bytes x 4096 pages. This organizational difference does not affect functional substitution for applications requiring standard 8Mbit SPI FLASH memory.

Parameter Comparison

Engineering Selection Recommendations

Both the AT45DB081E-SHNHC-T and AT45DB081E-SHN2B-T are active production parts manufactured by Renesas Electronics Corporation. Selection between these parts should be based on:

• Supply Availability: AT45DB081E-SHN2B-T currently has 1896 units in stock versus 1626 units for AT45DB081E-SHNHC-T
• Compliance Requirements: Both parts meet ROHS3 compliance and REACH unaffected status, suitable for regulated applications
• Memory Organization Requirement: Applications requiring the specific 264-byte page organization must use AT45DB081E-SHNHC-T; applications compatible with 256-byte pages may use either part
• Packaging & Handling: Both parts carry MSL 1 rating, requiring no special moisture control during storage and handling

Frequently Asked Questions (FAQ)

Q: Can AT45DB081E-SHN2B-T be used as a direct replacement for AT45DB081E-SHNHC-T in existing designs?

A: Yes, for applications where the 256-byte page organization is compatible with firmware and software implementations. The difference in memory organization (264 vs 256 bytes per page) is the only technical distinction. Verify that your application firmware supports 256-byte page operations before substitution.

Q: Are the physical packages identical?

A: Yes. Both parts use the 8-SOIC package with 0.209" width and 5.30mm dimensions. PCB footprints and reflow profiles are identical.

Q: What is the difference between the part numbers AT45DB081E-SHNHC-T and AT45DB081E-SHN2B-T?

A: The suffix difference (-SHNHC vs -SHN2B) indicates different manufacturing batches or internal revisions by Renesas Electronics. The functional specifications, electrical characteristics, and package type remain equivalent.

Q: Do both parts have the same compliance certifications?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 moisture sensitivity rating. Both are suitable for applications requiring regulatory compliance in electronics manufacturing.

Q: What is the significance of the memory organization difference?

A: Memory organization refers to how data is physically arranged in the device. AT45DB081E-SHNHC-T organizes data as 264 bytes per page across 4096 pages, while AT45DB081E-SHN2B-T uses 256 bytes per page. This affects how firmware addresses and manages data blocks. Substitution requires firmware compatibility verification.

Q: Can these parts be used interchangeably in production?

A: Interchangeability depends on firmware implementation. If your design firmware is written to support both 264-byte and 256-byte page organizations, or if it can be updated to support 256-byte pages, then yes. Otherwise, parts must be matched to their respective firmware versions.