Equivalent & Substitute Parts for 25AA080D-I/ST

Part Overview

The 25AA080D-I/ST is an 8Kbit EEPROM memory IC manufactured by Microchip Technology, featuring SPI interface operation at 10 MHz with 8-TSSOP surface mount packaging. This non-volatile memory device operates across a supply voltage range of 1.8V to 5.5V and supports industrial temperature ranges from -40°C to 85°C. The part is ROHS3 compliant and currently in active production status. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package form factor, and electrical operating parameters to ensure functional interchangeability in circuit applications.

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 / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 25AA080D-I/ST is determined by the following critical parameters:

Primary Matching Criteria:

Memory capacity: 8Kbit
Memory organization: 1K x 8 bit structure
Interface protocol: SPI serial communication
Package form factor: 8-TSSOP surface mount
Supply voltage compatibility: Minimum 1.8V operation

Secondary Compatibility Factors:

Clock frequency: 10 MHz or higher (higher frequency parts are backward compatible)
Write cycle time: 5ms or faster
Operating temperature range: Must support -40°C minimum and 85°C maximum
Voltage supply range: Must encompass 1.8V to 5.5V or be compatible within application requirements

Substitute parts meeting these criteria can be directly replaced in circuit designs without modification to PCB layout or firmware, provided that higher clock frequencies do not introduce timing conflicts in the application.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Write Cycle Time	Voltage Supply	Operating Temperature	Package	Grade
25AA080D-I/ST	Microchip Technology	8Kbit	10 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Industrial
25AA080C-I/ST	Microchip Technology	8Kbit	10 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Industrial
AT25080B-XHL-B	Microchip Technology	8Kbit	20 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Industrial
AT25080B-XHL-T	Microchip Technology	8Kbit	20 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Industrial
BR25H080FVT-2CE2	Rohm Semiconductor	8Kbit	10 MHz	4ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP-B	Automotive AEC-Q100
CAV25080YE-GT3	onsemi	8Kbit	20 MHz	5ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Automotive AEC-Q100
M95080-DFDW6TP	STMicroelectronics	8Kbit	20 MHz	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Industrial
M95080-DRDW3TP/K	STMicroelectronics	8Kbit	20 MHz	4ms	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Automotive AEC-Q100
M95080-DRDW8TP/K	STMicroelectronics	8Kbit	20 MHz	4ms	1.8V ~ 5.5V	-40°C ~ 105°C	8-TSSOP	Automotive AEC-Q100
M95080-RDW6TP	STMicroelectronics	8Kbit	20 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Industrial
M95080-WDW6TP	STMicroelectronics	8Kbit	20 MHz	5ms	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Industrial

Engineering Selection Recommendations

Direct Industrial Replacement: The 25AA080C-I/ST from Microchip Technology provides identical electrical and thermal specifications to the 25AA080D-I/ST, differing only in internal revision level. Both parts maintain ROHS3 compliance and industrial temperature operation, making this the primary equivalent choice.

Higher Performance Industrial Alternatives: The AT25080B-XHL-B and AT25080B-XHL-T variants operate at 20 MHz clock frequency while maintaining identical supply voltage and temperature ranges. These parts are suitable for applications requiring faster SPI communication without thermal or voltage constraint changes. Both are ROHS3 compliant industrial grade devices.

STMicroelectronics Industrial Options: The M95080-RDW6TP and M95080-DFDW6TP from STMicroelectronics provide 20 MHz operation with industrial temperature specifications matching the original part's -40°C to 85°C range. The M95080-RDW6TP offers the highest inventory availability at 33,400 units. Both maintain ROHS3 compliance and 1.8V minimum supply voltage operation.

Automotive Grade Alternatives: For applications requiring automotive qualification, the BR25H080FVT-2CE2 (Rohm Semiconductor), CAV25080YE-GT3 (onsemi), M95080-DRDW3TP/K, and M95080-DRDW8TP/K (STMicroelectronics) provide AEC-Q100 certification with extended temperature operation to 125°C. These parts are suitable for automotive and industrial applications with enhanced reliability requirements. Note that BR25H080FVT-2CE2 specifies minimum 2.5V supply voltage, which may require circuit evaluation for 1.8V applications.

Voltage Supply Considerations: Parts specifying 2.5V minimum supply voltage (BR25H080FVT-2CE2, CAV25080YE-GT3, M95080-WDW6TP) are not suitable for applications requiring 1.8V operation. Verify application supply voltage requirements before selection.

Frequently Asked Questions (FAQ)

Q: Can I use a 20 MHz part as a substitute for the 10 MHz 25AA080D-I/ST? A: Yes. Higher clock frequency parts are backward compatible. The 20 MHz variants (AT25080B-XHL series, M95080 series) operate correctly in applications designed for 10 MHz operation. Firmware or timing-critical code does not require modification.

Q: What is the difference between 25AA080D-I/ST and 25AA080C-I/ST? A: Both parts are functionally identical with matching electrical specifications, memory capacity, interface, and temperature range. The difference is internal revision level. The 25AA080C-I/ST is the current production variant with higher inventory availability (3,205 units vs. 1,000 units).

Q: Are automotive-grade parts (AEC-Q100) suitable for industrial applications? A: Yes. Automotive-qualified parts meet or exceed industrial reliability standards. The extended temperature range to 125°C and enhanced qualification testing make them suitable for demanding industrial environments. Verify that the lower operating temperature limit (-40°C) meets application requirements.

Q: Can I substitute BR25H080FVT-2CE2 in a 1.8V supply application? A: No. The BR25H080FVT-2CE2 specifies a minimum supply voltage of 2.5V and is not rated for 1.8V operation. Select alternatives with 1.8V minimum specification: 25AA080C-I/ST, AT25080B-XHL series, M95080-DFDW6TP, M95080-DRDW3TP/K, M95080-DRDW8TP/K, or M95080-RDW6TP.

Q: What packaging differences exist among substitute parts? A: Most parts use standard 8-TSSOP packaging. The BR25H080FVT-2CE2 specifies 8-TSSOP-B variant. Both are mechanically compatible in standard 8-TSSOP footprints. Verify PCB footprint compatibility with component supplier documentation if using 8-TSSOP-B variant.

Q: Which substitute part has the fastest write cycle time? A: The BR25H080FVT-2CE2, M95080-DRDW3TP/K, and M95080-DRDW8TP/K all specify 4ms write cycle time, compared to 5ms for the original part. This faster performance is transparent to applications and requires no firmware changes.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the environmental compliance of the 25AA080D-I/ST.

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