AT45DB011D-SSH-B Equivalent & Substitute Parts

Part Overview

The AT45DB011D-SSH-B is a 1Mbit FLASH memory IC with SPI interface operating at 66 MHz, manufactured by Renesas Electronics Corporation in an 8-SOIC surface mount package. This device is classified as obsolete, making substitute parts necessary for new designs and production continuity. The part operates across a supply voltage range of 2.7V to 3.6V and supports industrial temperature ranges from -40°C to 85°C.

Substiute Parts

AT45DB011D-SSH-B

Renesas Electronics CorporationIn Stock: 1161AT45DB011D-SSH-B Datasheet

Current PartRFQ

AT45DB021E-SSHN-B

Renesas Electronics CorporationIn Stock: 1285AT45DB021E-SSHN-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT45DB021E-SSHN-B qualifies as a substitute for the AT45DB011D-SSH-B based on the following critical parameters:

Compatible Parameters:

• Memory Interface: Both use SPI protocol
• Package Type: Both use 8-SOIC (0.154", 3.90mm Width) surface mount package
• Operating Temperature Range: Both support -40°C ~ 85°C
• Mounting Type: Both are surface mount devices
• Manufacturer: Both manufactured by Renesas Electronics Corporation

Enhanced Specifications: The AT45DB021E-SSHN-B provides increased memory capacity (2Mbit versus 1Mbit) and improved clock frequency (70 MHz versus 66 MHz). The substitute maintains backward compatibility through identical package geometry and SPI interface protocol, enabling direct PCB replacement without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

The AT45DB021E-SSHN-B is the designated substitute for the obsolete AT45DB011D-SSH-B. The substitute part maintains full electrical and mechanical compatibility through identical SPI interface protocol and 8-SOIC package geometry. The AT45DB021E-SSHN-B carries Active product status, ensuring long-term availability and supply chain continuity.

The substitute provides enhanced performance characteristics including increased memory capacity (2Mbit), faster clock frequency (70 MHz), and improved write cycle time (3ms). The extended voltage supply range (1.65V ~ 3.6V) of the substitute accommodates broader system voltage requirements while maintaining compatibility with the original 2.7V ~ 3.6V specification.

The AT45DB021E-SSHN-B is RoHS3 compliant and carries REACH Unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q: Can the AT45DB021E-SSHN-B directly replace the AT45DB011D-SSH-B on existing PCBs?

A: Yes. Both parts use identical 8-SOIC package geometry (0.154", 3.90mm Width) and SPI interface protocol. No PCB layout modifications are required for physical or electrical substitution.

Q: What are the key differences between these parts?

A: The AT45DB021E-SSHN-B provides doubled memory capacity (2Mbit versus 1Mbit), faster clock frequency (70 MHz versus 66 MHz), and faster page write cycle time (3ms versus 4ms). The substitute also supports a lower minimum supply voltage (1.65V versus 2.7V).

Q: Is the AT45DB021E-SSHN-B compatible with existing firmware designed for the AT45DB011D-SSH-B?

A: Both parts implement the same SPI interface protocol and maintain identical page organization structure (264 Bytes per page). Firmware compatibility depends on application-specific memory addressing and capacity requirements.

Q: What is the product status difference between these parts?

A: The AT45DB011D-SSH-B is classified as Obsolete, indicating discontinued manufacturing. The AT45DB021E-SSHN-B maintains Active status, ensuring ongoing availability and manufacturing support.

Q: Are there any voltage supply considerations when substituting?

A: The AT45DB021E-SSHN-B supports a wider voltage range (1.65V ~ 3.6V) compared to the original part (2.7V ~ 3.6V). Systems operating within the original 2.7V ~ 3.6V range experience no voltage-related compatibility issues.