Alternatives to Microchip Technology AT45DB081B-RU
Microchip Technology AT45DB081B-RU and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
| AT45DB081B-RUMicrochip Technology |  AT45DB081E-SSHN-TRenesas Electronics |  AT45DB081E-SHN-TRenesas Electronics | +2more | |
|---|---|---|---|---|
| FFF Compatibility | The alternative is housed in an 8-lead narrow SOIC package (150 mil width) compared to the 28-lead SOIC package (330 mil width) of the original AT45DB081B-RU. This requires an external adapter board or a PCB layout redesign.The physical footprint and package size are much smaller (4.9mm x 3.9mm for SOIC-8 vs 18.0mm x 8.4mm for SOIC-28).It acts as a functional drop-in replacement, offering the same 8 Mbit storage density and dual SRAM buffer architecture with full software/protocol compatibility. | The alternative is housed in an 8-lead wide SOIC package (208 mil width) compared to the 28-lead SOIC package (330 mil width) of the original AT45DB081B-RU. This requires an external adapter board or a PCB layout redesign.The physical footprint and package size are much smaller (5.3mm x 5.3mm for SOIC-8 wide vs 18.0mm x 8.4mm for SOIC-28).It acts as a functional drop-in replacement, offering the same 8 Mbit storage density and dual SRAM buffer architecture with full software/protocol compatibility. | ||
 AI Summary | AT45DB081B-RU by Microchip Technology: NOR Flash. | The AT45DB081E-SSHN-T is the direct, active-lifecycle successor to the obsolete AT45DB081B-RU. It maintains full firmware and command protocol compatibility, but requires a board redesign due to the migration from the old 28-pin SOIC to a modern 8-pin SOIC package.
| The AT45DB081E-SHN-T is functionally equivalent to the SSHN variant but uses a wider SOIC-8 package. It is a direct generational successor from the same DataFlash family, ensuring maximum code and command compatibility, although it also requires physical footprint modifications.
| |
| Lifecycle Status | Obsolete | Unknown | Unknown | |
| Market Availability | Discontinued | Unknown | Unknown | |
| REACH | Unknown | Unknown | Unknown | |
| RoHS | Unknown | Unknown | Unknown | |
| Description | NOR Flash | The AT45DB081E-SSHN-T is the direct, active-lifecycle successor to the obsolete AT45DB081B-RU. It maintains full firmware and command protoc | The AT45DB081E-SHN-T is functionally equivalent to the SSHN variant but uses a wider SOIC-8 package. It is a direct generational successor f | |
| Manufacturer | Microchip Technology | Renesas Electronics | Renesas Electronics | |
| Type | NOR Flash | Component | Component | |
| Datasheet | Open | N/A | N/A | |
| Lead Time | Unknown | Unknown | Unknown | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542320071 | - | - | |
| Moisture Sensitivity Level | - | - | - |
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 AT45DB321D-SU-2.5Microchip Technology | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Microchip Technology AT45DB081B-RU is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Microchip Technology AT45DB081B-RU are the AT45DB081E-SSHN-T (Renesas Electronics) and the AT45DB081E-SHN-T (Renesas Electronics), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the AT45DB081B-RU are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The AT45DB081B-RU (Microchip Technology) is a part in the NOR Flash category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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