Equivalent & Substitute Parts for 24LC025-E/ST

Part Overview

The 24LC025-E/ST is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time. This non-volatile memory device operates across a supply voltage range of 2.5V to 5.5V and temperature range of -40°C to 125°C. The part is housed in an 8-TSSOP surface mount package and maintains active product status with ROHS3 compliance. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters to ensure functional interchangeability in circuit applications.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 24LC025-E/ST are qualified based on the following critical parameters:

Core Compatibility Criteria:

Memory capacity: 2Kbit (256 x 8 organization)
Interface protocol: I2C
Package type: 8-TSSOP surface mount
Supply voltage range: Must encompass or overlap with 2.5V ~ 5.5V
Operating temperature range: Must support -40°C minimum and 125°C maximum, or provide adequate coverage for intended application
Clock frequency: 400 kHz minimum
Access time: 900 ns or faster
Write cycle time: 5ms or faster

Substitute parts are grouped into two categories based on electrical parameter alignment:

Category A - Direct Electrical Match (2.5V ~ 5.5V supply, 400 kHz, 900 ns access):

CAV24C02YE-GT3 (onsemi)
M24C02-FDW6TP (STMicroelectronics)

Category B - Enhanced Performance (1.6V ~ 1.8V minimum supply, 1 MHz clock, 450 ns access):

BR24G02FVT-3GE2 (Rohm Semiconductor)
BR24L02FVT-WE2 (Rohm Semiconductor)
BR34E02FVT-3E2 (Rohm Semiconductor)
M24C02-DRDW3TP/K (STMicroelectronics)
M24C02-DRDW8TP/K (STMicroelectronics)
R1EX24002ATAS0I#U0 (Renesas Electronics Corporation)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Write Cycle Time	Voltage Supply	Operating Temperature	Package	RoHS Status
24LC025-E/ST	Microchip Technology	2Kbit	400 kHz	900 ns	5ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	ROHS3
BR24G02FVT-3GE2	Rohm Semiconductor	2Kbit	400 kHz	—	5ms	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	ROHS3
BR24L02FVT-WE2	Rohm Semiconductor	2Kbit	400 kHz	—	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	ROHS3
BR34E02FVT-3E2	Rohm Semiconductor	2Kbit	400 kHz	—	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	ROHS3
CAV24C02YE-GT3	onsemi	2Kbit	400 kHz	900 ns	5ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	ROHS3
M24C02-DRDW3TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	4ms	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	ROHS3
M24C02-DRDW8TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	4ms	1.8V ~ 5.5V	-40°C ~ 105°C	8-TSSOP	ROHS3
M24C02-FDW6TP	STMicroelectronics	2Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	ROHS3
R1EX24002ATAS0I#U0	Renesas Electronics Corporation	2Kbit	400 kHz	900 ns	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Specifications):

CAV24C02YE-GT3 from onsemi provides the closest electrical match to the 24LC025-E/ST, maintaining identical supply voltage range (2.5V ~ 5.5V), clock frequency (400 kHz), access time (900 ns), and operating temperature range (-40°C ~ 125°C). This part carries AEC-Q100 automotive qualification, providing additional reliability assurance. The 8-TSSOP package is mechanically compatible.

For Enhanced Performance Applications:

M24C02-DRDW3TP/K and M24C02-DRDW8TP/K from STMicroelectronics offer superior performance with 1 MHz clock frequency and 450 ns access time, enabling faster I2C communication. Both parts maintain the full -40°C to 125°C operating range and carry AEC-Q100 automotive qualification. The M24C02-DRDW3TP/K supports -40°C ~ 125°C, while M24C02-DRDW8TP/K supports -40°C ~ 105°C. These parts require minimum supply voltage of 1.8V.

For Low-Voltage Applications:

BR24G02FVT-3GE2 from Rohm Semiconductor extends the lower supply voltage limit to 1.6V, enabling operation in battery-powered or low-voltage systems. This part maintains 400 kHz I2C operation and 5ms write cycle time. Operating temperature range is -40°C ~ 85°C.

For Cost-Optimized Selection:

M24C02-FDW6TP from STMicroelectronics and R1EX24002ATAS0I#U0 from Renesas Electronics Corporation both provide 400 kHz I2C operation with 900 ns access time at lower minimum supply voltages (1.7V and 1.8V respectively). Both maintain ROHS3 compliance and support -40°C minimum operating temperature.

All substitute parts listed maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage practices.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower minimum supply voltage than the original 24LC025-E/ST?

A: Yes. The 24LC025-E/ST specifies 2.5V minimum supply voltage. Substitute parts with lower minimum voltages (1.6V, 1.7V, or 1.8V) are backward compatible and will operate correctly in circuits designed for 2.5V ~ 5.5V supply range. The lower minimum voltage specification provides additional design flexibility for low-voltage applications.

Q: What is the difference between 8-TSSOP and 8-TSSOP-B packages?

A: Both packages are mechanically and electrically compatible 8-pin surface mount packages with identical 0.173" width and 4.40mm pitch. The "-B" designation indicates a variant from Rohm Semiconductor. Pin assignments and footprints are identical, allowing direct PCB substitution.

Q: Can I substitute a 1 MHz I2C part for the 400 kHz 24LC025-E/ST?

A: Yes. The M24C02-DRDW3TP/K and M24C02-DRDW8TP/K operate at 1 MHz I2C clock frequency, which is backward compatible with 400 kHz I2C bus systems. The I2C protocol allows faster devices to operate on slower buses. These parts also offer faster access time (450 ns vs. 900 ns) and shorter write cycle time (4ms vs. 5ms).

Q: Are all substitute parts automotive qualified?

A: CAV24C02YE-GT3, M24C02-DRDW3TP/K, and M24C02-DRDW8TP/K carry AEC-Q100 automotive qualification. Other substitute parts (BR24G02FVT-3GE2, BR24L02FVT-WE2, BR34E02FVT-3E2, M24C02-FDW6TP, R1EX24002ATAS0I#U0) are listed as active products with ROHS3 compliance but do not specify AEC-Q100 qualification in the provided data.

Q: What is the maximum operating temperature for substitute parts?

A: The 24LC025-E/ST supports -40°C ~ 125°C. CAV24C02YE-GT3, M24C02-DRDW3TP/K, and M24C02-DRDW8TP/K maintain this full range. Rohm Semiconductor parts (BR24G02FVT-3GE2, BR24L02FVT-WE2, BR34E02FVT-3E2) and M24C02-FDW6TP support -40°C ~ 85°C. R1EX24002ATAS0I#U0 supports -40°C ~ 85°C. Selection depends on application temperature requirements.

Q: Is the 24LC025-E/ST still in active production?

A: Yes. The 24LC025-E/ST maintains active product status with 1012 units in current inventory. All listed substitute parts also maintain active product status, ensuring availability for new designs and production orders.

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