SST25PF080B-80-4C-S2AE-T Equivalent & Substitute Parts

Part Overview

The SST25PF080B-80-4C-S2AE-T is an 8Mbit SPI FLASH memory IC manufactured by Microchip Technology, designed for non-volatile data storage applications requiring high-speed serial interface access. This part operates at 80 MHz clock frequency with a supply voltage range of 2.3V to 3.6V and is housed in an 8-SOIC surface mount package.

The SST25PF080B-80-4C-S2AE-T is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems or new designs requiring compatible memory solutions.

Key Parameters

Parameter	Value
Memory Size	8Mbit
Memory Organization	1M x 8
Memory Interface	SPI
Clock Frequency	80 MHz
Write Cycle Time	10µs
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	0°C ~ 70°C
Package Type	8-SOIC (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SST25PF080B-80-4C-S2AE-T is determined by the following critical parameters:

Memory Capacity & Organization: The substitute part must maintain 8Mbit capacity with 1M x 8 organization to ensure data storage compatibility and address mapping equivalence.

Serial Interface Protocol: The SPI interface is mandatory for communication compatibility with existing host controllers and firmware implementations.

Package & Pinout: The 8-SOIC package with 0.209" width and 5.30mm dimensions ensures mechanical and electrical compatibility with PCB layouts and socket designs.

Voltage Supply Range: The substitute must operate within or encompass the original supply voltage specification to ensure reliable operation across the intended power distribution network.

Write Cycle Time: The 10µs write cycle time specification must be maintained to preserve timing-critical operations in memory programming sequences.

The SST25VF080B-50-4C-S2AF-T qualifies as a direct substitute based on matching memory capacity, organization, SPI interface, package type, write cycle time, and operating temperature range. The reduced clock frequency (50 MHz versus 80 MHz) and adjusted voltage supply range (2.7V ~ 3.6V) represent functional variations that do not prevent substitution in applications where the lower performance specification is acceptable.

Parameter Comparison

Parameter	SST25PF080B-80-4C-S2AE-T (Main)	SST25VF080B-50-4C-S2AF-T (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Memory Size	8Mbit	8Mbit
Memory Organization	1M x 8	1M x 8
Memory Interface	SPI	SPI
Clock Frequency	80 MHz	50 MHz
Write Cycle Time	10µs	10µs
Voltage Supply Range	2.3V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Package Type	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The SST25VF080B-50-4C-S2AF-T is the qualified substitute for the obsolete SST25PF080B-80-4C-S2AE-T based on the following engineering criteria:

Compliance & Certification: Both parts maintain ROHS3 compliance and identical Moisture Sensitivity Level (MSL 3, 168 Hours), ensuring equivalent environmental and regulatory standing.

Product Status & Availability: The substitute part carries Active product status with verified availability (4400 Pcs in stock), providing supply chain continuity compared to the obsolete main part.

Functional Compatibility: Identical memory capacity, organization, SPI interface, write cycle time, and operating temperature range ensure direct functional substitution at the firmware and application level.

Performance Consideration: The reduced clock frequency (50 MHz versus 80 MHz) represents a performance trade-off. Selection of this substitute is appropriate for applications where the lower maximum data transfer rate does not impact system performance requirements.

Voltage Supply Range: The substitute's minimum supply voltage of 2.7V (versus 2.3V for the main part) requires verification that the system power distribution maintains this minimum threshold under all operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the SST25VF080B-50-4C-S2AF-T directly replace the SST25PF080B-80-4C-S2AE-T without PCB modifications?

A: Yes. Both parts use identical 8-SOIC packaging with matching pinout and dimensions. No PCB layout changes are required for mechanical or electrical integration.

Q: What is the impact of the reduced 50 MHz clock frequency on system performance?

A: The maximum SPI data transfer rate is reduced from 80 MHz to 50 MHz. This affects read/write operation speed. Verify that your application's timing requirements are satisfied at the lower frequency before substitution.

Q: Are there voltage supply compatibility concerns?

A: The substitute part requires a minimum supply voltage of 2.7V, compared to 2.3V for the original part. Confirm that your power supply maintains at least 2.7V under all operating conditions, including transient events and load variations.

Q: Is firmware modification required when substituting this part?

A: No firmware modification is required. The SPI interface protocol, memory organization, and command set remain compatible. The system will operate at the reduced clock frequency without software changes.

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

A: The main part (SST25PF080B-80-4C-S2AE-T) is obsolete with 853 Pcs available. The substitute (SST25VF080B-50-4C-S2AF-T) is active production with 4400 Pcs in stock, providing superior long-term supply assurance.

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