25LC080CT-E/MS EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 25LC080CT-E/MS is an 8Kbit Serial Peripheral Interface (SPI) EEPROM memory IC manufactured by Microchip Technology. This non-volatile memory device operates at 10 MHz clock frequency with a supply voltage range of 2.5V to 5.5V and is housed in an 8-MSOP surface mount package. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the original part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when enhanced performance specifications (such as higher clock frequency or extended voltage ranges) are needed for system requirements.

Key Parameters

Parameter	Value
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	SPI
Clock Frequency	10 MHz
Write Cycle Time	5ms
Supply Voltage Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	8-MSOP (0.118", 3.00mm Width)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 25LC080CT-E/MS are classified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Memory Size: 8Kbit (mandatory match)
Memory Organization: 1K x 8 (mandatory match)
Memory Interface: SPI (mandatory match)
Package Type: 8-MSOP or 8-TSSOP (physically compatible footprints)
Supply Voltage: Minimum 2.5V support required
Operating Temperature: Minimum -40°C to 85°C support required

Substitution Categories:

Category 1 - Direct Equivalents (Same Clock Frequency, Same Package):

25LC080AT-E/MS (Microchip Technology) - Identical specifications with Tape & Reel packaging
BR25H080FVM-2CTR (Rohm Semiconductor) - Automotive-grade equivalent with AEC-Q100 qualification

Category 2 - Enhanced Performance (Higher Clock Frequency, Compatible Package):

AT25080B-XHL-B (Microchip Technology) - 20 MHz operation, 8-TSSOP package
AT25080B-XHL-T (Microchip Technology) - 20 MHz operation, 8-TSSOP package
CAV25080YE-GT3 (onsemi) - 20 MHz operation, automotive-grade, AEC-Q100 qualified
M95080-DFDW6TP (STMicroelectronics) - 20 MHz operation, 8-TSSOP package
M95080-RDW6TP (STMicroelectronics) - 20 MHz operation, 8-TSSOP package
M95080-WDW6TP (STMicroelectronics) - 20 MHz operation, 8-TSSOP package

Category 3 - Alternative Manufacturers (Same Specifications):

CAT25080YI-GT3 (onsemi) - Standard frequency operation, 8-TSSOP package

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Supply Voltage	Operating Temp	Package	Write Cycle Time	MSL Rating	Automotive Grade
25LC080CT-E/MS	Microchip Technology	8Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	5ms	1	No
25LC080AT-E/MS	Microchip Technology	8Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	5ms	1	No
AT25080B-XHL-B	Microchip Technology	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	3	No
AT25080B-XHL-T	Microchip Technology	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	3	No
BR25H080FVM-2CTR	Rohm Semiconductor	8Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	4ms	1	Yes (AEC-Q100)
CAT25080YI-GT3	onsemi	8Kbit	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1	No
CAV25080YE-GT3	onsemi	8Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	5ms	1	Yes (AEC-Q100)
M95080-DFDW6TP	STMicroelectronics	8Kbit	20 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1	No
M95080-RDW6TP	STMicroelectronics	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1	No
M95080-WDW6TP	STMicroelectronics	8Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1	No

Engineering Selection Recommendations

For Direct Replacement (Same Performance Profile): The 25LC080AT-E/MS is the primary substitute when identical electrical and thermal specifications are required. Both parts are manufactured by Microchip Technology, maintain the same 10 MHz clock frequency, support the full -40°C to 125°C operating range, and are ROHS3 compliant. The primary difference is packaging format (Tape & Reel versus cut tape).

For Automotive Applications: The BR25H080FVM-2CTR (Rohm Semiconductor) and CAV25080YE-GT3 (onsemi) are qualified to AEC-Q100 automotive standards. BR25H080FVM-2CTR maintains the 10 MHz frequency and full temperature range of the original part. CAV25080YE-GT3 provides enhanced 20 MHz operation while maintaining the extended -40°C to 125°C temperature range, making it suitable for automotive systems requiring higher data rates.

For Enhanced Performance (Higher Clock Frequency): The AT25080B-XHL series, M95080 series, and CAV25080YE-GT3 all operate at 20 MHz, doubling the data throughput. These parts are suitable when system requirements demand faster SPI communication. Note that these parts operate at reduced maximum temperature (-40°C to 85°C) compared to the original specification.

For Low-Voltage Applications: The M95080-DFDW6TP supports operation down to 1.7V supply voltage, providing the widest voltage margin for battery-powered or low-power systems.

For Packaging Compatibility: The original 25LC080CT-E/MS uses 8-MSOP packaging. Direct package equivalents are limited to 25LC080AT-E/MS and BR25H080FVM-2CTR. All other substitutes use 8-TSSOP packaging, which has a different footprint (0.173" versus 0.118" width) and requires PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can I use a 20 MHz part as a substitute for the 10 MHz 25LC080CT-E/MS?

A: Yes. Higher clock frequency parts are backward compatible with systems designed for lower frequencies. The 20 MHz parts (AT25080B-XHL series, M95080 series, CAV25080YE-GT3) will operate correctly in circuits designed for 10 MHz operation. However, verify that your PCB layout and signal integrity support the higher frequency if you plan to use the enhanced speed.

Q: What is the difference between 8-MSOP and 8-TSSOP packages?

A: Both are 8-pin surface mount packages, but with different physical dimensions. The 8-MSOP is 0.118" wide (3.00mm), while 8-TSSOP is 0.173" wide (4.40mm). These are not pin-compatible without PCB redesign. If your design uses 8-MSOP footprints, select only 25LC080AT-E/MS or BR25H080FVM-2CTR.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this reference maintain ROHS3 compliance and REACH unaffected status, meeting current environmental regulations.

Q: What does AEC-Q100 qualification mean?

A: AEC-Q100 is an automotive industry standard qualification that certifies component reliability under automotive operating conditions. BR25H080FVM-2CTR and CAV25080YE-GT3 carry this qualification, making them suitable for automotive applications where component reliability is critical.

Q: Can I substitute a part with a lower operating temperature range?

A: No. If your application requires operation at temperatures above 85°C, you must use parts with extended temperature ranges. The original 25LC080CT-E/MS, 25LC080AT-E/MS, BR25H080FVM-2CTR, and CAV25080YE-GT3 all support -40°C to 125°C operation. The AT25080B and M95080 series are limited to -40°C to 85°C.

Q: What is MSL rating and why does it matter?

A: Moisture Sensitivity Level (MSL) indicates how long a component can be exposed to moisture before soldering. MSL 1 (unlimited) parts like the original have no time restrictions. MSL 3 parts (168 hours) like AT25080B-XHL-B require soldering within 168 hours of package opening. For high-volume manufacturing with extended storage, MSL 1 parts are preferred.

Q: Which substitute offers the best overall compatibility?

A: The 25LC080AT-E/MS provides the closest match to the original 25LC080CT-E/MS, with identical electrical specifications, temperature range, and package type. The only difference is the packaging format (Tape & Reel). This part is the recommended first choice for direct replacement.

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