Microchip 25LC080AT-I/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The Microchip 25LC080AT-I/SN is an 8Kbit EEPROM memory IC with SPI interface, operating at 10 MHz clock frequency in an 8-SOIC surface mount package. This part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility are maintained across the same memory capacity, interface protocol, and package form factor.

Key Parameters

Parameter	Value
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	SPI
Clock Frequency	10 MHz
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Write Cycle Time	5ms
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Parameters:

Memory Size: 8Kbit (mandatory)
Memory Organization: 1K x 8 (mandatory)
Memory Interface: SPI (mandatory)
Package / Case: 8-SOIC with 0.154" (3.90mm) width (mandatory for direct pin compatibility)
Voltage Supply Range: Must encompass or be compatible with 2.5V ~ 5.5V
Operating Temperature: Must support -40°C ~ 85°C minimum
Write Cycle Time: 5ms or faster
RoHS Status: ROHS3 Compliant (mandatory)

Secondary Considerations:

Clock Frequency: 10 MHz or higher
Packaging format (Tape & Reel, Cut Tape, Tube)
Product Status (Active preferred)
Programmability verification status

Parts meeting all primary parameters are classified as direct substitutes. Parts with extended temperature ranges or higher clock frequencies are listed as manufacturer-recommended alternatives.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency (MHz)	Voltage Supply (V)	Operating Temp (°C)	Package	Write Cycle (ms)	Product Status
25LC080AT-I/SN	Microchip	8Kbit	10	2.5 ~ 5.5	-40 ~ 85	8-SOIC	5	Active
25LC080A-I/SN	Microchip	8Kbit	10	2.5 ~ 5.5	-40 ~ 85	8-SOIC	5	Active
25AA080AT-I/SN	Microchip	8Kbit	10	1.8 ~ 5.5	-40 ~ 85	8-SOIC	5	Active
25LC080BT-I/SN	Microchip	8Kbit	10	2.5 ~ 5.5	-40 ~ 85	8-SOIC	5	Active
25LC080CT-I/SN	Microchip	8Kbit	10	2.5 ~ 5.5	-40 ~ 85	8-SOIC	5	Active
25LC080DT-E/SN	Microchip	8Kbit	10	2.5 ~ 5.5	-40 ~ 125	8-SOIC	5	Active
AT25080B-SSHL-T	Microchip	8Kbit	20	1.8 ~ 5.5	-40 ~ 85	8-SOIC	5	Active
CAT25080VI-GT3	onsemi	8Kbit	Not specified	1.8 ~ 5.5	-40 ~ 85	8-SOIC	5	Active
BR25H080F-2CE2	Rohm Semiconductor	8Kbit	10	2.5 ~ 5.5	-40 ~ 125	8-SOIC (0.173")	4	Active
BR25H080FJ-2CE2	Rohm Semiconductor	8Kbit	10	2.5 ~ 5.5	-40 ~ 125	8-SOIC	4	Active
BR25L080F-WE2	Rohm Semiconductor	8Kbit	5	1.8 ~ 5.5	-40 ~ 85	8-SOIC (0.173")	5	Not For New Designs

Engineering Selection Recommendations

Direct Substitutes (Microchip 25LC080 Series): The parts 25LC080A-I/SN, 25LC080BT-I/SN, and 25LC080CT-I/SN are direct substitutes for 25LC080AT-I/SN. All maintain identical electrical parameters, package specifications, and Active product status. Selection among these variants depends on packaging format availability (Tube vs. Tape & Reel).

Extended Temperature Alternative: The 25LC080DT-E/SN extends the operating temperature range to -40°C ~ 125°C while maintaining all other electrical specifications. This part is suitable for applications requiring higher temperature operation.

Lower Voltage Supply Alternative: The 25AA080AT-I/SN supports a lower minimum supply voltage of 1.8V compared to the 2.5V minimum of the main part, while maintaining all other parameters. This part is suitable for low-power applications.

Higher Clock Frequency Alternative: The AT25080B-SSHL-T operates at 20 MHz clock frequency with extended voltage range (1.8V ~ 5.5V). This part provides performance headroom for timing-critical applications.

Cross-Manufacturer Alternatives: The onsemi CAT25080VI-GT3 and Rohm Semiconductor BR25H080FJ-2CE2 provide cross-manufacturer options with equivalent 8Kbit SPI EEPROM functionality in 8-SOIC packages. The Rohm parts include automotive qualification (AEC-Q100) and extended temperature ranges (-40°C ~ 125°C).

Obsolescence Consideration: The BR25L080F-WE2 is marked "Not For New Designs" and should not be selected for new applications despite meeting core electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can I substitute 25LC080AT-I/SN with 25AA080AT-I/SN? A: Yes. Both parts are 8Kbit SPI EEPROM in 8-SOIC packages with identical clock frequency (10 MHz) and write cycle time (5ms). The 25AA080AT-I/SN supports lower minimum supply voltage (1.8V vs. 2.5V), making it compatible with 25LC080AT-I/SN applications operating at 2.5V or higher.

Q: What is the difference between 25LC080AT-I/SN and 25LC080DT-E/SN? A: The primary difference is operating temperature range. The 25LC080DT-E/SN supports -40°C ~ 125°C compared to -40°C ~ 85°C for the 25LC080AT-I/SN. All other electrical and mechanical parameters are identical. Select 25LC080DT-E/SN for high-temperature applications.

Q: Can I use Rohm BR25H080FJ-2CE2 as a substitute? A: Yes. The BR25H080FJ-2CE2 is an 8Kbit SPI EEPROM in 8-SOIC package with 10 MHz operation and 2.5V ~ 5.5V supply range. It includes automotive qualification (AEC-Q100) and extended temperature range (-40°C ~ 125°C). Write cycle time is 4ms, which is faster than the 5ms specification of 25LC080AT-I/SN.

Q: What does "Not For New Designs" mean for BR25L080F-WE2? A: This designation indicates the part is in end-of-life status and should not be selected for new product designs. Use active alternatives such as 25LC080AT-I/SN or equivalent parts instead.

Q: Are there package compatibility issues between 8-SOIC variants? A: The standard 8-SOIC package is 0.154" (3.90mm) width. Some Rohm parts specify 8-SOIC (0.173", 4.40mm) width. Verify PCB footprint compatibility before substitution, as wider packages may not fit standard 0.154" footprints.

Q: Which substitute offers the best performance for timing-critical applications? A: The AT25080B-SSHL-T operates at 20 MHz clock frequency, double the 10 MHz specification of 25LC080AT-I/SN. This part provides the highest clock speed among listed substitutes.

Q: Can I use CAT25080VI-GT3 from onsemi? A: Yes. The CAT25080VI-GT3 is an 8Kbit SPI EEPROM in 8-SOIC package with 1.8V ~ 5.5V supply range and -40°C ~ 85°C operating temperature. It is compatible with 25LC080AT-I/SN applications.

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