All Alternatives

Alternatives to Microchip Technology AT45DB081B-RU

Microchip Technology AT45DB081B-RU and its qualified second sources, compared on form, fit and function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

Equivalent and substitute parts for Microchip Technology AT45DB081B-RU

AT45DB081B-RU compared against its qualified second sources
AT45DB081B-RUMicrochip TechnologyAT45DB081E-MHN-TRenesas Electronics CorporationAT45DB081E-SSHN-TRenesas Electronics Corporation+1more
FFF CompatibilityThe alternative uses a leadless UDFN-8 package, which is completely pin- and footprint-incompatible with the legacy 28-pin SOIC.Transitions from a gull-wing leaded SOIC-28 to a tiny leadless 8-pad UDFN package, requiring major design modifications.Shares the same silicon design and DataFlash architecture, ensuring 100% command-level and firmware compatibility.The queried part is in a 28-pin SOIC (0.330" wide) package, while the alternative is in an 8-pin narrow SOIC (150-mil) package. Footprint redesign is mandatory.The alternative has a different physical package body size, pin count (8 pins vs 28 pins), and mounting land pattern.Fully backwards-compatible with the original AT45DB081B DataFlash command set, dual-buffer architecture, and page structure. It also offers significantly enhanced clock frequency and a wider operating voltage range.
AI Summary

AT45DB081B-RU by Microchip Technology: NOR Flash.

This variant is ideal if you are redesigning the board anyway and wish to save significant space. It packages the same high-performance 8Mbit DataFlash core into a modern, ultra-compact 8-pad UDFN footprint.

  • Very compact, low-profile 8-pad UDFN (5 x 6 mm) package for space-constrained designs
  • Saves significant board area compared to both 28-pin and 8-pin SOIC packages
  • Maintains full DataFlash architecture, dual buffers, and command compatibility
  • Requires a complete board redesign and transition to a leadless UDFN-8 package
  • More complex assembly and optical inspection due to leadless package pads

This is the direct modern successor in the DataFlash line. It retains the dual-buffer architecture and 264-byte page structure necessary to avoid rewriting software, but requires a PCB redesign to transition from the obsolete 28-pin SOIC to a modern 8-pin SOIC package.

  • Preserves the proprietary DataFlash command set and architecture
  • Supports dual SRAM data buffers for seamless read/write operations
  • Configurable page size supporting both legacy 264-byte and binary 256-byte modes
  • Requires a complete layout redesign to accommodate the 8-pin narrow SOIC footprint
  • Does not support 5V-tolerant inputs, which the original AT45DB081B did (limited to VCC + 0.6V)
Lifecycle StatusObsoleteActiveActive
Market AvailabilityDiscontinuedIn stockIn stock
REACHUnknownREACHREACH
RoHSUnknownRoHSRoHS
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