SST25VF080B-80-4C-S2AE Equivalent & Substitute Parts

Part Overview

The SST25VF080B-80-4C-S2AE is an 8Mbit SPI FLASH memory IC manufactured by Microchip Technology, housed in an 8-SOIC package. This part operates at 80 MHz clock frequency with a supply voltage range of 2.7V to 3.6V and is rated for 0°C to 70°C operating temperature. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Memory Size	8Mbit
Memory Organization	1M x 8
Memory Interface	SPI
Clock Frequency	80 MHz
Write Cycle Time	10µs
Supply Voltage	2.7V ~ 3.6V
Operating Temperature	0°C ~ 70°C
Package	8-SOIC (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SST25VF080B-80-4C-S2AE is determined by the following critical parameters: memory size (8Mbit), memory organization (1M x 8), package type (8-SOIC), supply voltage compatibility (2.7V ~ 3.6V), and SPI interface support. All substitute parts maintain these core electrical and mechanical specifications.

The substitute parts are grouped into two categories:

Category 1: Microchip SST25VF080B Series (50 MHz variants) These parts share identical memory capacity, organization, interface, package, and voltage specifications with the main part. The primary difference is reduced clock frequency (50 MHz versus 80 MHz), which represents a downgrade in performance capability but maintains full functional compatibility for SPI FLASH memory operations.

Category 2: Winbond W25Q80DVSSIG (104 MHz variant) This part maintains 8Mbit capacity, 1M x 8 organization, 8-SOIC package, and 2.7V ~ 3.6V supply voltage. The interface is SPI with Quad I/O capability, offering enhanced performance at 104 MHz. The write cycle time differs (3ms versus 10µs), reflecting different memory technology characteristics.

Parameter Comparison

Parameter	SST25VF080B-80-4C-S2AE (Main)	SST25VF080B-50-4C-S2AF	SST25VF080B-50-4I-S2AE	SST25VF080B-50-4I-S2AF	W25Q80DVSSIG
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Winbond Electronics
Memory Size	8Mbit	8Mbit	8Mbit	8Mbit	8Mbit
Memory Organization	1M x 8	1M x 8	1M x 8	1M x 8	1M x 8
Memory Interface	SPI	SPI	SPI	SPI	SPI - Quad I/O
Clock Frequency	80 MHz	50 MHz	50 MHz	50 MHz	104 MHz
Write Cycle Time	10µs	10µs	10µs	10µs	3ms
Supply Voltage	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Microchip SST25VF080B Series)

The SST25VF080B-50-4C-S2AF and SST25VF080B-50-4I-S2AF are active products from Microchip Technology with ROHS3 compliance. These parts are suitable for applications where the 50 MHz clock frequency meets system requirements. The SST25VF080B-50-4I-S2AE and SST25VF080B-50-4I-S2AF extend the operating temperature range to -40°C ~ 85°C, providing broader environmental support compared to the main part's 0°C ~ 70°C specification.

For Enhanced Performance (Winbond W25Q80DVSSIG)

The W25Q80DVSSIG offers 104 MHz operation, exceeding the main part's 80 MHz specification. This part is an active product with ROHS3 compliance and -40°C ~ 85°C operating temperature range. The SPI - Quad I/O interface provides additional data throughput capability beyond standard SPI operation. The 3ms write cycle time reflects NOR FLASH technology characteristics and should be evaluated against application timing requirements.

Frequently Asked Questions (FAQ)

Q: Can the SST25VF080B-50 series directly replace the SST25VF080B-80-4C-S2AE?

A: Yes, from a functional standpoint. Both maintain 8Mbit capacity, 1M x 8 organization, SPI interface, 8-SOIC package, and 2.7V ~ 3.6V supply voltage. The 50 MHz clock frequency is lower than the original 80 MHz specification. Applications must operate within the reduced clock frequency capability.

Q: What is the difference between the SST25VF080B-50-4C-S2AF and SST25VF080B-50-4I-S2AE variants?

A: Both parts operate at 50 MHz with identical memory specifications. The primary difference is operating temperature range: SST25VF080B-50-4C-S2AF is rated 0°C ~ 70°C, while SST25VF080B-50-4I-S2AE is rated -40°C ~ 85°C. Select based on your application's thermal environment requirements.

Q: Is the Winbond W25Q80DVSSIG compatible with SST25VF080B designs?

A: The W25Q80DVSSIG maintains 8Mbit capacity, 1M x 8 organization, 8-SOIC package, and 2.7V ~ 3.6V supply voltage. The SPI - Quad I/O interface is backward compatible with standard SPI operation. The 104 MHz clock frequency and 3ms write cycle time differ from the original part and must be evaluated for your specific application requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the main part.

Q: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC package (0.209", 5.30mm Width) is a surface-mount package with standardized pin configuration and footprint. All substitute parts use this identical package, ensuring mechanical and electrical compatibility with existing PCB designs without layout modifications.

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