Equivalent & Substitute Parts for 25LC080AT-I/ST

Part Overview

The 25LC080AT-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 are maintained across the same memory category, 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-TSSOP (0.173", 4.40mm Width)
Write Cycle Time	5ms
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the 25LC080AT-I/ST is determined by strict alignment of the following parameters: 8Kbit memory capacity, 1K x 8 organization, SPI interface protocol, 8-TSSOP package form factor, and surface mount mounting type. The clock frequency, voltage supply range, operating temperature range, and write cycle time define functional compatibility boundaries. Parts meeting these core electrical and mechanical specifications are classified as direct substitutes. Parts with enhanced specifications (higher clock frequency, extended temperature range, automotive qualification) are listed as manufacturer-recommended alternatives where backward compatibility is maintained.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency (MHz)	Voltage Supply (V)	Operating Temperature (°C)	Write Cycle Time (ms)	Package	Automotive Grade
25LC080AT-I/ST	Microchip Technology	8Kbit	10	2.5 ~ 5.5	-40 ~ 85	5	8-TSSOP	No
25LC080A-I/ST	Microchip Technology	8Kbit	10	2.5 ~ 5.5	-40 ~ 85	5	8-TSSOP	No
25AA080CT-I/ST	Microchip Technology	8Kbit	10	1.8 ~ 5.5	-40 ~ 85	5	8-TSSOP	No
AT25080B-XHL-T	Microchip Technology	8Kbit	20	1.8 ~ 5.5	-40 ~ 85	5	8-TSSOP	No
BR25H080FVT-2CE2	Rohm Semiconductor	8Kbit	10	2.5 ~ 5.5	-40 ~ 125	4	8-TSSOP-B	Yes (AEC-Q100)
CAT25080YI-GT3	onsemi	8Kbit	Not Specified	1.8 ~ 5.5	-40 ~ 85	5	8-TSSOP	No
CAV25080YE-GT3	onsemi	8Kbit	20	2.5 ~ 5.5	-40 ~ 125	5	8-TSSOP	Yes (AEC-Q100)
M95080-DFDW6TP	STMicroelectronics	8Kbit	20	1.7 ~ 5.5	-40 ~ 85	5	8-TSSOP	No
M95080-DRDW3TP/K	STMicroelectronics	8Kbit	20	1.8 ~ 5.5	-40 ~ 125	4	8-TSSOP	Yes (AEC-Q100)
M95080-DRDW8TP/K	STMicroelectronics	8Kbit	20	1.8 ~ 5.5	-40 ~ 105	4	8-TSSOP	Yes (AEC-Q100)
M95080-RDW6TP	STMicroelectronics	8Kbit	20	1.8 ~ 5.5	-40 ~ 85	5	8-TSSOP	No

Engineering Selection Recommendations

Direct substitution candidates for 25LC080AT-I/ST include 25LC080A-I/ST (Microchip Technology, identical electrical and thermal specifications, Tape & Reel packaging alternative) and 25AA080CT-I/ST (Microchip Technology, extended lower voltage support to 1.8V, Tape & Reel packaging).

Manufacturer-recommended alternatives with enhanced specifications include AT25080B-XHL-T (doubled clock frequency to 20 MHz, extended lower voltage support), BR25H080FVT-2CE2 (Rohm Semiconductor, extended operating temperature to 125°C, AEC-Q100 automotive qualification, reduced write cycle time to 4ms), CAV25080YE-GT3 (onsemi, doubled clock frequency to 20 MHz, extended operating temperature to 125°C, AEC-Q100 automotive qualification), and STMicroelectronics M95080 series variants (M95080-DFDW6TP, M95080-DRDW3TP/K, M95080-DRDW8TP/K, M95080-RDW6TP with 20 MHz operation and automotive-grade options).

All listed substitutes maintain ROHS3 compliance, 8Kbit capacity, 1K x 8 organization, SPI interface, and 8-TSSOP package compatibility. Selection between standard and automotive-grade variants depends on application temperature requirements and qualification mandates. Parts with extended voltage supply ranges (1.8V minimum) provide additional design flexibility for low-power applications.

Frequently Asked Questions (FAQ)

Q: Can 25AA080CT-I/ST replace 25LC080AT-I/ST in all applications?

A: Yes, 25AA080CT-I/ST is a direct substitute. Both devices share identical memory capacity (8Kbit), organization (1K x 8), SPI interface, clock frequency (10 MHz), write cycle time (5ms), and operating temperature range (-40°C to 85°C). The 25AA080CT-I/ST extends lower voltage support to 1.8V, making it compatible with the 2.5V ~ 5.5V requirement of the main part.

Q: What is the difference between standard and automotive-grade substitutes?

A: Automotive-grade parts (BR25H080FVT-2CE2, CAV25080YE-GT3, M95080-DRDW3TP/K, M95080-DRDW8TP/K) carry AEC-Q100 qualification and support extended operating temperatures up to 125°C, compared to 85°C for standard parts. These are required for automotive and high-reliability applications. Write cycle times are reduced to 4ms in automotive variants.

Q: Are there packaging differences between substitutes?

A: Most substitutes use standard 8-TSSOP packaging. BR25H080FVT-2CE2 uses 8-TSSOP-B variant. All maintain the same 0.173" width and 4.40mm dimensions, ensuring mechanical compatibility with 25LC080AT-I/ST footprints.

Q: Which substitute offers the highest clock frequency?

A: Multiple substitutes operate at 20 MHz: AT25080B-XHL-T, CAV25080YE-GT3, M95080-DFDW6TP, M95080-DRDW3TP/K, M95080-DRDW8TP/K, and M95080-RDW6TP. The main part operates at 10 MHz, so these represent performance enhancements while maintaining backward compatibility.

Q: What is the minimum supply voltage supported across all substitutes?

A: The lowest minimum supply voltage is 1.7V (M95080-DFDW6TP). Most alternatives support 1.8V minimum. The main part requires 2.5V minimum, so lower-voltage substitutes provide expanded operating range.

Q: Is CAT25080YI-GT3 a suitable substitute if clock frequency is not specified?

A: CAT25080YI-GT3 meets all core substitution criteria: 8Kbit capacity, 1K x 8 organization, SPI interface, 8-TSSOP package, and -40°C to 85°C operating range. The unspecified clock frequency does not disqualify it as a substitute, but design verification is necessary to confirm timing compatibility with the 10 MHz requirement of the main part.

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