Equivalent & Substitute Parts for 25AA080AT-I/ST

Part Overview

The 25AA080AT-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 device is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility exist, enabling design flexibility and supply chain continuity for applications requiring 8Kbit SPI EEPROM functionality.

Key Parameters

Parameter	Value
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	SPI
Clock Frequency	10 MHz
Voltage Supply Range	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Write Cycle Time	5ms
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 25AA080AT-I/ST is determined by the following critical parameters:

Primary Substitution Criteria:

Memory capacity: 8Kbit
Memory organization: 1K x 8
Interface protocol: SPI
Package type: 8-TSSOP with 0.173" width and 4.40mm width specification
Mounting type: Surface Mount

Secondary Compatibility Factors:

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

Parts are grouped into two categories: direct equivalents (matching all primary criteria at 10 MHz operation) and higher-speed alternatives (20 MHz operation with compatible electrical and thermal specifications).

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temp	Write Cycle Time	Package	RoHS Status
25AA080AT-I/ST	Microchip Technology	8Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	ROHS3
25AA080CT-I/ST	Microchip Technology	8Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	ROHS3
AT25080B-XHL-T	Microchip Technology	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	ROHS3
BR25H080FVT-2CE2	Rohm Semiconductor	8Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	4ms	8-TSSOP	ROHS3
CAT25080YI-GT3	onsemi	8Kbit	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	ROHS3
CAV25080YE-GT3	onsemi	8Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	5ms	8-TSSOP	ROHS3
M95080-DFDW6TP	STMicroelectronics	8Kbit	20 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	ROHS3
M95080-DRDW3TP/K	STMicroelectronics	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	4ms	8-TSSOP	ROHS3
M95080-DRDW8TP/K	STMicroelectronics	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 105°C	4ms	8-TSSOP	ROHS3
M95080-RDW6TP	STMicroelectronics	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	ROHS3
M95080-WDW6TP	STMicroelectronics	8Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	ROHS3

Engineering Selection Recommendations

Direct Equivalent (Pin-Compatible, Same Speed): The 25AA080CT-I/ST from Microchip Technology is a direct equivalent to the 25AA080AT-I/ST, matching all electrical and mechanical specifications. Both devices operate at 10 MHz with identical voltage supply range, temperature range, and write cycle time. Selection between these two parts depends on packaging format availability (Tape & Reel vs. alternative packaging).

Higher-Speed Alternatives (20 MHz Operation): Parts operating at 20 MHz (AT25080B-XHL-T, CAV25080YE-GT3, M95080 series variants, and M95080-DFDW6TP) are electrically compatible substitutes when the application can tolerate increased clock frequency. These parts maintain 8Kbit capacity, SPI interface, and 8-TSSOP packaging. Voltage supply ranges and operating temperature specifications vary by manufacturer and part variant; verify compatibility with system requirements before selection.

Automotive-Grade Alternatives: BR25H080FVT-2CE2, CAV25080YE-GT3, M95080-DRDW3TP/K, and M95080-DRDW8TP/K carry AEC-Q100 automotive qualification. These parts are suitable for applications requiring automotive-grade components and extended temperature operation (-40°C to 125°C or -40°C to 105°C).

Supply Voltage Considerations: The 25AA080AT-I/ST operates across 1.8V to 5.5V. Substitutes with narrower voltage ranges (2.5V minimum) require verification that system supply voltages remain within specified limits. M95080-DFDW6TP supports 1.7V minimum, providing extended low-voltage operation.

All substitute parts listed maintain ROHS3 compliance and are classified as Active product status.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 25AA080AT-I/ST with a 20 MHz variant like the M95080-RDW6TP?

A: Yes. The M95080-RDW6TP is electrically compatible. It maintains 8Kbit capacity, SPI interface, 8-TSSOP packaging, and operates across 1.8V to 5.5V. The 20 MHz clock frequency is backward compatible with 10 MHz applications. Verify that your system design does not impose maximum frequency constraints.

Q: What is the difference between 25AA080AT-I/ST and 25AA080CT-I/ST?

A: Both parts are manufactured by Microchip Technology with identical electrical specifications: 8Kbit SPI EEPROM, 10 MHz operation, 1.8V to 5.5V supply, -40°C to 85°C operating range, and 8-TSSOP packaging. The difference lies in packaging format: AT-I/ST is supplied in Tape & Reel, while CT-I/ST is supplied in Cut Tape & Digi-Reel format.

Q: Are automotive-grade parts (AEC-Q100) required for my application?

A: Automotive qualification is necessary only if your application operates in automotive environments or requires automotive-grade component certification. Standard industrial-grade parts (25AA080AT-I/ST, AT25080B-XHL-T, M95080-RDW6TP) are suitable for non-automotive applications. Automotive variants include BR25H080FVT-2CE2, CAV25080YE-GT3, M95080-DRDW3TP/K, and M95080-DRDW8TP/K.

Q: Can I use a substitute part with a lower minimum supply voltage?

A: The 25AA080AT-I/ST operates from 1.8V minimum. Substitutes with 2.5V minimum supply voltage (BR25H080FVT-2CE2, CAV25080YE-GT3, M95080-WDW6TP) require system supply voltages of 2.5V or higher. If your system operates below 2.5V, select alternatives with 1.8V or lower minimum ratings (25AA080CT-I/ST, AT25080B-XHL-T, M95080-DFDW6TP, M95080-DRDW3TP/K, M95080-DRDW8TP/K, M95080-RDW6TP).

Q: What is the significance of write cycle time differences (4ms vs. 5ms)?

A: Write cycle time specifies the duration required to complete a single page write operation. The 25AA080AT-I/ST requires 5ms per write cycle. Substitutes with 4ms write cycle time (BR25H080FVT-2CE2, M95080-DRDW3TP/K, M95080-DRDW8TP/K) complete write operations faster, reducing overall programming time. Both specifications are compatible; faster write cycles do not create incompatibility.

Q: Is the 8-TSSOP package pinout identical across all substitute parts?

A: All listed substitute parts use 8-TSSOP packaging with 0.173" width and 4.40mm width specification. While package dimensions are standardized, pinout compatibility must be verified against individual device datasheets. SPI interface parts typically share common pinout conventions (CS, MOSI, MISO, CLK, VCC, GND), but manufacturer-specific variations may exist.

Q: Can I mix different manufacturers' parts in the same design?

A: Yes. All listed parts maintain identical memory capacity (8Kbit), organization (1K x 8), interface (SPI), and package type (8-TSSOP). Electrical specifications overlap sufficiently for interchangeability in most applications. Verify supply voltage ranges and operating temperature requirements match your system design before mixing manufacturers.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message