AT45DB081D-MU-2.5-SL383 Equivalent & Substitute Parts

Part Overview

The AT45DB081D-MU-2.5-SL383 is an 8Mbit FLASH memory IC with SPI interface, manufactured by Renesas Electronics Corporation. This device operates at 50 MHz clock frequency with a supply voltage range of 2.5V to 3.6V and is housed in an 8-VDFN package with exposed pad. The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

AT45DB081D-MU-2.5-SL383

Renesas Electronics CorporationIn Stock: 811AT45DB081D-MU-2.5-SL383 Datasheet

Current PartRFQ

AT45DB081E-MHN-T

Renesas Electronics CorporationIn Stock: 72631AT45DB081E-MHN-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT45DB081D-MU-2.5-SL383 is determined by the following critical parameters:

• Memory capacity: 8Mbit (non-negotiable)
• Memory format and technology: FLASH
• Interface protocol: SPI
• Memory organization: 264 Bytes x 4096 pages
• Operating temperature range: -40°C ~ 85°C (TC)
• Base product family: AT45DB081 series

The AT45DB081E-MHN-T qualifies as a direct substitute based on matching memory size, organization, interface type, and operating temperature range. While this substitute exhibits enhanced performance characteristics (85 MHz clock frequency versus 50 MHz) and broader supply voltage compatibility (1.7V ~ 3.6V versus 2.5V ~ 3.6V), these represent functional improvements rather than limitations. The substitute maintains full backward compatibility with the original part's core electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The AT45DB081E-MHN-T is the qualified substitute for the obsolete AT45DB081D-MU-2.5-SL383. Selection of this substitute is supported by the following factors:

• Active product status ensures long-term availability and supply chain continuity
• ROHS3 compliance and REACH unaffected status meet current regulatory requirements
• Improved moisture sensitivity level (MSL 1 versus MSL 3) reduces handling and storage constraints
• Enhanced clock frequency (85 MHz) and expanded supply voltage range (1.7V ~ 3.6V) provide operational flexibility
• Identical memory capacity, organization, interface protocol, and operating temperature range ensure functional compatibility
• Package transition from 8-VDFN to 8-UDFN requires PCB layout verification due to different footprint dimensions (6x5mm versus 5x6mm)

Frequently Asked Questions (FAQ)

Q: Can the AT45DB081E-MHN-T directly replace the AT45DB081D-MU-2.5-SL383 in existing designs?

A: Functional compatibility is confirmed based on matching memory capacity, organization, SPI interface, and operating temperature range. However, the package footprint differs (8-VDFN 6x5mm versus 8-UDFN 5x6mm), requiring PCB layout modification and re-qualification of the assembly process.

Q: What are the key differences between these two parts?

A: The substitute offers higher clock frequency (85 MHz versus 50 MHz), broader supply voltage range (1.7V ~ 3.6V versus 2.5V ~ 3.6V), improved moisture sensitivity rating (MSL 1 versus MSL 3), and active product status versus obsolete status. These represent enhancements to the original specification.

Q: Are there compliance or certification differences?

A: The substitute is ROHS3 compliant and REACH unaffected. Compliance status for the original part was not specified in available documentation.

Q: Does the package change affect electrical performance?

A: Package dimensions differ, but electrical performance parameters including memory organization, page write cycle time (4ms), and operating temperature range remain identical. The exposed pad design is maintained in both packages.

Q: What is the significance of the MSL rating difference?

A: MSL 3 (168 hours) requires controlled storage and handling conditions with moisture bake-out procedures before reflow. MSL 1 (unlimited) eliminates these constraints, reducing procurement and assembly complexity.