AT45DB011D-SSH-T Equivalent & Substitute Parts

Part Overview

The AT45DB011D-SSH-T is a 1Mbit FLASH memory IC with SPI interface operating at 66 MHz, packaged in 8-SOIC surface mount configuration. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates across a 2.7V to 3.6V supply range with industrial temperature specifications (-40°C to 85°C).

Substiute Parts

AT45DB011D-SSH-T

Renesas Electronics CorporationIn Stock: 1378AT45DB011D-SSH-T Datasheet

Current PartRFQ

AT45DB021E-SSHN-T

Renesas Electronics CorporationIn Stock: 24121AT45DB021E-SSHN-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT45DB011D-SSH-T is determined by the following critical parameters:

• Package Compatibility: Both parts must use 8-SOIC surface mount packaging with identical physical dimensions (0.154", 3.90mm Width)
• Interface Compatibility: SPI interface requirement must be maintained
• Voltage Compatibility: Supply voltage range must encompass or be compatible with the original 2.7V ~ 3.6V specification
• Temperature Range: Operating temperature must meet or exceed -40°C ~ 85°C
• Memory Organization: Page-based architecture with 264-byte pages must be preserved for protocol compatibility

The AT45DB021E-SSHN-T qualifies as a substitute based on these parameters. While it offers increased memory capacity (2Mbit vs 1Mbit) and improved performance characteristics, it maintains full compatibility across all critical electrical and mechanical interfaces.

Parameter Comparison

Engineering Selection Recommendations

The AT45DB021E-SSHN-T is the qualified substitute for AT45DB011D-SSH-T based on the following factors:

• Product Status: The substitute is Active, ensuring long-term availability and supply chain continuity, whereas the main part is Obsolete
• Compliance: The substitute is ROHS3 Compliant, meeting current regulatory requirements
• Moisture Sensitivity: The substitute has superior MSL rating (1 vs 2), providing better reliability in storage and handling
• Electrical Compatibility: The substitute maintains identical package, interface, and temperature specifications while offering extended voltage range (1.65V minimum vs 2.7V minimum)
• Performance Enhancement: The substitute provides higher clock frequency (70 MHz vs 66 MHz) and faster page write cycle (3ms vs 4ms)

Frequently Asked Questions (FAQ)

Q: Can AT45DB021E-SSHN-T be used as a direct replacement for AT45DB011D-SSH-T?

A: Yes. Both parts share identical 8-SOIC packaging, SPI interface, 264-byte page organization, and operating temperature range. The substitute is electrically and mechanically compatible.

Q: What is the primary difference between these parts?

A: The AT45DB021E-SSHN-T provides double the memory capacity (2Mbit vs 1Mbit) with 1024 pages instead of 512 pages. It also offers improved performance (70 MHz vs 66 MHz clock, 3ms vs 4ms page write time) and extended voltage range (1.65V minimum vs 2.7V minimum).

Q: Are there any design considerations when switching to the substitute?

A: No design changes are required. The identical package footprint, pin configuration, and SPI protocol ensure drop-in compatibility. Firmware or software modifications are not necessary.

Q: Why is the main part listed as Obsolete?

A: AT45DB011D-SSH-T is classified as Obsolete by the manufacturer. The AT45DB021E-SSHN-T is the active equivalent in the product line, ensuring continued availability and support.

Q: Does the substitute meet current compliance standards?

A: Yes. AT45DB021E-SSHN-T is ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic components.

Q: What is the significance of the Moisture Sensitivity Level difference?

A: The substitute has MSL 1 (Unlimited shelf life) compared to MSL 2 (1 Year shelf life) for the main part. This provides superior reliability during storage and handling without time-based degradation concerns.