Equivalent & Substitute Parts for 25AA080BT-I/MS

Part Overview

The 25AA080BT-I/MS is an 8Kbit SPI EEPROM memory IC manufactured by Microchip Technology, packaged in 8-MSOP with a 10 MHz clock frequency. This non-volatile memory device operates across a 1.8V to 5.5V supply range and is rated for -40°C to 85°C operating temperatures. The part is currently active and ROHS3 compliant. Equivalent and substitute parts are identified when electrical parameters, memory organization, interface protocol, and physical packaging allow direct functional replacement in circuit designs.

Key Parameters

Parameter	Value
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	SPI
Clock Frequency	10 MHz
Write Cycle Time	5ms
Voltage Supply Range	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Criteria:

Memory size: 8Kbit
Memory organization: 1K x 8
Interface protocol: SPI
Mounting type: Surface Mount
RoHS compliance: ROHS3 Compliant

Secondary Compatibility Criteria:

Clock frequency: 10 MHz or higher (backward compatible)
Supply voltage range: Must encompass or overlap with 1.8V ~ 5.5V
Operating temperature: Must support -40°C ~ 85°C minimum
Write cycle time: 5ms or faster

Package Considerations:

8-MSOP (0.118", 3.00mm Width) and 8-TSSOP (0.173", 4.40mm Width) packages are mechanically and electrically compatible for PCB layout purposes
Packaging format (Tape & Reel, Cut Tape, Tube) does not affect electrical substitution

Substitute parts are grouped by clock frequency capability and voltage supply specifications, as these parameters determine operational compatibility in specific circuit applications.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temp	Package	Write Cycle Time
25AA080BT-I/MS	Microchip Technology	8Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	5ms
25AA080AT-I/MS	Microchip Technology	8Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	5ms
25AA080CT-I/MS	Microchip Technology	8Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	5ms
AT25080B-XHL-B	Microchip Technology	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms
AT25080B-XHL-T	Microchip Technology	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms
BR25H080FVM-2CTR	Rohm Semiconductor	8Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	4ms
CAT25080YI-GT3	onsemi	8Kbit	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms
CAV25080YE-GT3	onsemi	8Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	5ms
M95080-DFDW6TP	STMicroelectronics	8Kbit	20 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms
M95080-RDW6TP	STMicroelectronics	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms
M95080-WDW6TP	STMicroelectronics	8Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical and Package Specifications):

The 25AA080AT-I/MS and 25AA080CT-I/MS are direct substitutes for the 25AA080BT-I/MS. All three parts share identical memory capacity, clock frequency, voltage supply range, operating temperature, and package specifications. The difference lies in packaging format (Tape & Reel versus Cut Tape), which does not affect electrical performance. Both substitute parts are manufactured by Microchip Technology and maintain ROHS3 compliance.

Higher Clock Frequency Substitutes (20 MHz):

The AT25080B-XHL-B, AT25080B-XHL-T, M95080-DFDW6TP, M95080-RDW6TP, and M95080-WDW6TP operate at 20 MHz, providing double the clock frequency of the primary part. These substitutes maintain 8Kbit capacity, 1K x 8 organization, and SPI interface. All support the -40°C to 85°C operating temperature range. The AT25080B variants use 8-TSSOP packaging, while the M95080 variants also use 8-TSSOP. These parts are suitable for applications requiring higher data transfer rates while maintaining backward compatibility with 10 MHz SPI protocols.

Automotive-Grade Substitutes:

The BR25H080FVM-2CTR (Rohm Semiconductor) and CAV25080YE-GT3 (onsemi) are automotive-qualified parts with AEC-Q100 certification. The BR25H080FVM-2CTR operates at 10 MHz with 8-MSOP packaging and supports -40°C to 125°C temperature range. The CAV25080YE-GT3 operates at 20 MHz with 8-TSSOP packaging and also supports -40°C to 125°C. Both parts have restricted voltage supply ranges (2.5V ~ 5.5V) compared to the primary part. These substitutes are appropriate for automotive and extended temperature applications.

onsemi Alternatives:

The CAT25080YI-GT3 (onsemi) provides an 8Kbit SPI EEPROM in 8-TSSOP packaging with 1.8V ~ 5.5V supply range and -40°C to 85°C operating temperature. Clock frequency is not specified in the provided data. This part is suitable for applications where onsemi device qualification is required.

Product Status and Compliance:

All substitute parts listed maintain Active product status and ROHS3 compliance. The 25AA080AT-I/MS is MFR Recommended and DiGi-Electronics Programmable Verified. The M95080-WDW6TP is also DiGi-Electronics Programmable Verified. Selection should prioritize verified parts when programmability confirmation is required for manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 25AA080BT-I/MS with a 20 MHz clock frequency part in my existing design?

A: Yes. Parts operating at 20 MHz (AT25080B-XHL-B, AT25080B-XHL-T, M95080-DFDW6TP, M95080-RDW6TP, M95080-WDW6TP) are backward compatible with 10 MHz SPI protocols. The higher clock frequency does not prevent operation in circuits designed for 10 MHz. Verify that your PCB layout and signal integrity support the faster clock if you intend to operate at 20 MHz.

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

A: Both packages are 8-pin surface mount packages suitable for PCB assembly. The 8-MSOP has a width of 0.118" (3.00mm), while the 8-TSSOP has a width of 0.173" (4.40mm). Pin pitch and footprint differ between the two packages. PCB layout and component placement must accommodate the specific package type. Electrical performance is equivalent between the two package styles.

Q: Are automotive-grade parts (BR25H080FVM-2CTR, CAV25080YE-GT3) required for non-automotive applications?

A: No. Automotive-grade parts with AEC-Q100 qualification are not required for standard commercial applications. These parts are specified when designs require extended temperature operation (-40°C to 125°C) or automotive industry compliance. For standard -40°C to 85°C applications, non-automotive alternatives are appropriate.

Q: What is the impact of voltage supply range differences between substitute parts?

A: The primary part 25AA080BT-I/MS supports 1.8V ~ 5.5V. Some substitutes (BR25H080FVM-2CTR, CAV25080YE-GT3, M95080-WDW6TP) have a minimum supply voltage of 2.5V. If your circuit operates below 2.5V, these parts are not suitable. Verify your power supply specifications against the substitute part's voltage range before selection.

Q: Can I use M95080-DFDW6TP if my circuit operates at 1.7V?

A: Yes. The M95080-DFDW6TP supports 1.7V ~ 5.5V supply range, which encompasses lower voltage operation compared to the primary part (1.8V minimum). This part is suitable for low-voltage applications.

Q: What does "DiGi-Electronics Programmable Verified" mean?

A: This designation indicates that the part has been verified for programmability through DiGi-Electronics' testing and validation process. Parts with this verification (25AA080AT-I/MS, M95080-WDW6TP) are confirmed compatible with standard programming equipment and procedures. Parts marked "Not Verified" have not undergone this specific validation but remain functionally equivalent.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this reference maintain ROHS3 compliance and REACH Unaffected status, meeting environmental and regulatory requirements for commercial electronics manufacturing.

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