Equivalent & Substitute Parts for 25LC080BT-I/ST

Part Overview

The 25LC080BT-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 2.5V to 5.5V supply voltage range and maintains functionality from -40°C to 85°C. The part is currently in active production status and ROHS3 compliant. Equivalent and substitute parts are identified to address inventory availability, extended operating temperature requirements, higher clock frequency specifications, or automotive-grade qualification needs.

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	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-TSSOP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution compatibility for the 25LC080BT-I/ST is determined by the following critical parameters: 8Kbit memory capacity, 1K x 8 organization, SPI interface protocol, 8-TSSOP package footprint, and surface mount technology. Parts are grouped into three categories based on allowed parameter variations:

Category 1: Direct Equivalents (Identical Specifications) Parts maintaining 10 MHz clock frequency, 2.5V to 5.5V supply voltage, and -40°C to 85°C operating temperature range with standard MSL-1 moisture sensitivity.

Category 2: Enhanced Performance Substitutes (Higher Clock Frequency) Parts operating at 20 MHz clock frequency while maintaining 8Kbit capacity, SPI interface, and 8-TSSOP packaging. These parts support the 25LC080BT-I/ST application while enabling higher data transfer rates.

Category 3: Automotive-Grade Substitutes (Extended Temperature and Qualification) Parts qualified to AEC-Q100 automotive standards with extended operating temperature ranges (-40°C to 125°C) and automotive-grade certification, maintaining 8Kbit capacity and SPI interface in 8-TSSOP packaging.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temperature	Write Cycle Time	Grade	Packaging
25LC080BT-I/ST	Microchip Technology	8Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	5ms	Standard	Tape & Reel
25AA080CT-I/ST	Microchip Technology	8Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	Standard	Tape & Reel
AT25080B-XHL-T	Microchip Technology	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	Standard	Cut Tape & Digi-Reel
BR25H080FVT-2CE2	Rohm Semiconductor	8Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	4ms	Automotive	Tape & Reel
CAT25080YI-GT3	onsemi	8Kbit	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	Standard	Tape & Reel
CAV25080YE-GT3	onsemi	8Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	5ms	Automotive	Tape & Reel
M95080-DFDW6TP	STMicroelectronics	8Kbit	20 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	5ms	Standard	Tape & Reel
M95080-DRDW3TP/K	STMicroelectronics	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	4ms	Automotive	Tape & Reel
M95080-DRDW8TP/K	STMicroelectronics	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 105°C	4ms	Automotive	Tape & Reel
M95080-RDW6TP	STMicroelectronics	8Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	Standard	Tape & Reel

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Conditions) The 25AA080CT-I/ST from Microchip Technology serves as the primary direct equivalent, maintaining 10 MHz clock frequency and -40°C to 85°C operating range. This part offers extended lower voltage operation (1.8V minimum) compared to the original specification, providing additional design flexibility. Both parts maintain ROHS3 compliance and standard MSL-1 moisture sensitivity.

For Higher Data Transfer Rate Applications When 20 MHz clock frequency operation is required, AT25080B-XHL-T, CAV25080YE-GT3, M95080-DFDW6TP, M95080-DRDW3TP/K, M95080-DRDW8TP/K, and M95080-RDW6TP are suitable substitutes. These parts maintain 8Kbit capacity and SPI interface compatibility while doubling the clock frequency. All are ROHS3 compliant and maintain the 8-TSSOP package footprint.

For Automotive and Extended Temperature Applications BR25H080FVT-2CE2, CAV25080YE-GT3, M95080-DRDW3TP/K, and M95080-DRDW8TP/K are AEC-Q100 qualified automotive-grade parts with extended operating temperature ranges. BR25H080FVT-2CE2 maintains the original 10 MHz specification with -40°C to 125°C operation. CAV25080YE-GT3 and STMicroelectronics M95080 variants provide both 20 MHz operation and automotive qualification. All automotive-grade parts maintain ROHS3 compliance and MSL-1 moisture sensitivity.

For Low Voltage Applications M95080-DFDW6TP, M95080-DRDW3TP/K, M95080-DRDW8TP/K, and M95080-RDW6TP support minimum supply voltage of 1.7V to 1.8V, enabling operation in low-power system designs while maintaining 8Kbit capacity and SPI interface.

Frequently Asked Questions (FAQ)

Q: Can the 25AA080CT-I/ST replace the 25LC080BT-I/ST in all applications? A: Yes, the 25AA080CT-I/ST is a direct functional equivalent. Both parts maintain 8Kbit capacity, 1K x 8 organization, SPI interface, 10 MHz clock frequency, and -40°C to 85°C operating temperature. The 25AA080CT-I/ST extends the lower voltage limit to 1.8V, making it compatible with the original 2.5V to 5.5V specification. Both are ROHS3 compliant with MSL-1 moisture sensitivity.

Q: What is the difference between 10 MHz and 20 MHz clock frequency parts? A: Clock frequency determines the maximum SPI data transfer rate. 10 MHz parts (25LC080BT-I/ST, 25AA080CT-I/ST, BR25H080FVT-2CE2) support data rates up to 10 Mbps. 20 MHz parts (AT25080B-XHL-T, CAV25080YE-GT3, M95080 series) support data rates up to 20 Mbps. Both maintain identical 8Kbit capacity and write cycle times. Selection depends on system bandwidth requirements.

Q: Are automotive-grade parts backward compatible with standard applications? A: Yes. Automotive-grade parts (BR25H080FVT-2CE2, CAV25080YE-GT3, M95080-DRDW3TP/K, M95080-DRDW8TP/K) maintain full compatibility with standard applications. AEC-Q100 qualification and extended temperature ranges represent additional capabilities. These parts are suitable for both automotive and industrial applications requiring enhanced reliability.

Q: What packaging options are available? A: All substitute parts maintain the 8-TSSOP surface mount package footprint (0.173", 4.40mm width). Packaging formats vary: Tape & Reel (TR) is standard for most parts, while AT25080B-XHL-T is available in Cut Tape (CT) & Digi-Reel format. Selection depends on procurement and assembly requirements.

Q: Can I use a part with lower minimum voltage specification? A: Yes, if your system design operates within the lower voltage range. Parts specifying 1.8V minimum (25AA080CT-I/ST, AT25080B-XHL-T, M95080 series) are compatible with systems designed for 2.5V to 5.5V operation. The lower minimum voltage provides additional design margin and is not a limitation for standard 2.5V to 5.5V applications.

Q: What is the significance of write cycle time differences? A: Write cycle time indicates the duration required to complete a single word or page write operation. The 25LC080BT-I/ST specifies 5ms write cycle time. Some automotive-grade substitutes (BR25H080FVT-2CE2, M95080-DRDW3TP/K, M95080-DRDW8TP/K) specify 4ms, representing faster write performance. Both values are acceptable for standard EEPROM applications; faster write times provide marginal performance improvement in write-intensive operations.

Q: Are all substitute parts ROHS3 compliant? A: Yes, all listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the environmental compliance of the original 25LC080BT-I/ST.

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