25AA080-I/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 25AA080-I/SN is an 8Kbit Serial Peripheral Interface (SPI) EEPROM memory IC manufactured by Microchip Technology, packaged in 8-SOIC surface mount configuration. This non-volatile memory device operates at 1 MHz clock frequency with a supply voltage range of 1.8V to 5.5V and temperature range of -40°C to 85°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the primary part becomes unavailable, when higher clock frequency operation is required, or when alternative packaging or temperature specifications better suit application requirements.

Key Parameters

Parameter	25AA080-I/SN
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	SPI
Clock Frequency	1 MHz
Write Cycle Time	5ms
Voltage Supply Range	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 25AA080-I/SN is determined by the following critical parameters:

Core Compatibility Requirements:

Memory Size: 8Kbit (mandatory match)
Memory Organization: 1K x 8 (mandatory match)
Memory Interface: SPI (mandatory match)
Package / Case: 8-SOIC with 0.154" width (mandatory match for direct PCB compatibility)
Mounting Type: Surface Mount (mandatory match)

Allowable Variations:

Clock Frequency: May be equal to or greater than 1 MHz (higher frequency parts are backward compatible)
Write Cycle Time: May be equal to or less than 5ms (faster write times are acceptable)
Voltage Supply Range: Must encompass or match 1.8V ~ 5.5V minimum requirement
Operating Temperature: May extend beyond -40°C ~ 85°C range
Manufacturer: Different manufacturers acceptable if electrical and mechanical parameters align
RoHS Status: ROHS3 compliance required
Moisture Sensitivity Level: MSL 1 or MSL 3 acceptable for standard applications

Substitute parts are grouped by manufacturer and clock frequency capability while maintaining identical memory specifications and package dimensions.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Write Cycle Time	Voltage Supply	Operating Temperature	Package	RoHS Status
25AA080-I/SN	Microchip Technology	8Kbit	1 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	ROHS3
25AA080A-I/SN	Microchip Technology	8Kbit	10 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	ROHS3
25AA080C-I/SN	Microchip Technology	8Kbit	10 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	ROHS3
25AA080D-I/SN	Microchip Technology	8Kbit	10 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	ROHS3
AT25080B-SSHL-B	Microchip Technology	8Kbit	20 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	ROHS3
BR25H080F-2CE2	Rohm Semiconductor	8Kbit	10 MHz	4ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC (0.173")	ROHS3
BR25H080F-2LBH2	Rohm Semiconductor	8Kbit	10 MHz	4ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC (0.173")	ROHS3
CAT25080VI-GT3	onsemi	8Kbit	Not Specified	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	ROHS3
M95080-DRMN3TP/K	STMicroelectronics	8Kbit	20 MHz	4ms	1.8V ~ 5.5V	-40°C ~ 125°C	8-SOIC (0.154")	ROHS3
M95080-DRMN8TP/K	STMicroelectronics	8Kbit	20 MHz	4ms	1.8V ~ 5.5V	-40°C ~ 105°C	8-SOIC (0.154")	ROHS3
M95080-RMN6TP	STMicroelectronics	8Kbit	20 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (0.154")	ROHS3

Engineering Selection Recommendations

Direct Pin-Compatible Substitutes (Identical 8-SOIC 0.154" Package):

Microchip Technology 25AA080 series variants (25AA080A-I/SN, 25AA080C-I/SN, 25AA080D-I/SN) provide direct substitution with increased clock frequency capability (10 MHz) while maintaining identical package dimensions, voltage range, and temperature specifications. AT25080B-SSHL-B extends clock frequency to 20 MHz with verified programmability status.

STMicroelectronics M95080 series (M95080-DRMN3TP/K, M95080-DRMN8TP/K, M95080-RMN6TP) offers 20 MHz operation with extended temperature range to 125°C and AEC-Q100 automotive qualification on select variants. These maintain the 8-SOIC 0.154" package footprint.

onsemi CAT25080VI-GT3 provides direct package compatibility with identical voltage and temperature specifications.

Package Variant Consideration:

Rohm Semiconductor BR25H080F series (BR25H080F-2CE2, BR25H080F-2LBH2) uses 8-SOIC 0.173" package width, which differs from the 0.154" standard. These parts are not recommended for direct PCB substitution without layout verification due to package dimension variance. However, they offer extended temperature range (-40°C to 125°C) and faster write cycle time (4ms).

Compliance Status:

All listed substitutes maintain ROHS3 compliance and unlimited or extended moisture sensitivity levels. Parts with AEC-Q100 qualification (BR25H080F-2CE2, M95080-DRMN3TP/K) are suitable for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can I use a 10 MHz or 20 MHz part as a direct replacement for the 1 MHz 25AA080-I/SN?

A: Yes. Higher clock frequency EEPROM parts are backward compatible with lower frequency applications. The 25AA080A-I/SN, 25AA080C-I/SN, 25AA080D-I/SN, AT25080B-SSHL-B, and all M95080 variants operate at equal or higher frequencies and maintain identical memory organization, SPI interface, voltage range, and 8-SOIC 0.154" package dimensions.

Q: What is the difference between Microchip 25AA080, 25AA080A, 25AA080C, and 25AA080D variants?

A: These variants differ primarily in clock frequency specification. The base 25AA080-I/SN operates at 1 MHz, while 25AA080A-I/SN, 25AA080C-I/SN, and 25AA080D-I/SN operate at 10 MHz. All other electrical and mechanical parameters remain identical. Selection depends on application timing requirements.

Q: Are Rohm BR25H080F parts suitable replacements?

A: BR25H080F-2CE2 and BR25H080F-2LBH2 provide equivalent memory functionality with improved specifications (10 MHz operation, 4ms write cycle, -40°C to 125°C temperature range). However, the 8-SOIC 0.173" package width differs from the standard 0.154" width of the 25AA080-I/SN. PCB layout verification is required before substitution to confirm pad spacing compatibility.

Q: Which substitute offers the highest clock frequency?

A: AT25080B-SSHL-B, M95080-DRMN3TP/K, M95080-DRMN8TP/K, and M95080-RMN6TP all operate at 20 MHz, providing the highest clock frequency among available substitutes while maintaining 8-SOIC 0.154" package compatibility.

Q: Do all substitutes support the full 1.8V to 5.5V supply voltage range?

A: Microchip 25AA080 series, AT25080B-SSHL-B, onsemi CAT25080VI-GT3, and STMicroelectronics M95080 series all support 1.8V to 5.5V operation. Rohm BR25H080F variants operate at 2.5V to 5.5V, which does not support the lower 1.8V minimum of the original part.

Q: What is the significance of AEC-Q100 qualification on M95080 variants?

A: AEC-Q100 qualification indicates the part meets automotive industry reliability standards. M95080-DRMN3TP/K and M95080-DRMN8TP/K carry this qualification, making them suitable for automotive applications requiring enhanced reliability testing and documentation.

Q: Can I substitute based on write cycle time alone?

A: No. Write cycle time is one parameter among many. Substitution requires matching memory size (8Kbit), organization (1K x 8), interface (SPI), package type (8-SOIC), and package dimensions (0.154" width). Clock frequency may be equal or higher. Voltage and temperature ranges must meet or exceed application requirements.

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