24LC024-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC024-E/ST is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology, packaged in 8-TSSOP surface mount configuration. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and supports supply voltages from 2.5V to 5.5V across an operating temperature range of -40°C to 125°C. The device is ROHS3 compliant and currently in active product status with verified programmability. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters to ensure direct functional replacement 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 24LC024-E/ST are qualified based on the following critical parameters that determine functional compatibility:

Core Substitution 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
Memory type: Non-volatile EEPROM
Write cycle time: 5ms or faster
Access time: 900 ns or faster

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

Category A - Full Parameter Match: Parts with identical or superior electrical specifications including supply voltage range (2.5V ~ 5.5V), operating temperature range (-40°C ~ 125°C), and access time (900 ns).

Category B - Compatible with Parameter Variance: Parts with compatible core specifications but with narrower supply voltage ranges or reduced maximum operating temperature, suitable for applications not requiring the full -40°C to 125°C range.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Write Cycle Time	Voltage Supply	Operating Temperature	Package	Product Status
24LC024-E/ST	Microchip Technology	2Kbit	400 kHz	900 ns	5ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
BR24G02FVT-3GE2	Rohm Semiconductor	2Kbit	400 kHz	N/A	5ms	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	Active
BR34E02FVT-3E2	Rohm Semiconductor	2Kbit	400 kHz	N/A	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	Active
CAV24C02YE-GT3	onsemi	2Kbit	400 kHz	900 ns	5ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
M24C02-DRDW3TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	4ms	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
M24C02-DRDW8TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	4ms	1.8V ~ 5.5V	-40°C ~ 105°C	8-TSSOP	Active
M24C02-FDW6TP	STMicroelectronics	2Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
M34E02-FDW6TP	STMicroelectronics	2Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
R1EX24002ATAS0I#U0	Renesas Electronics Corporation	2Kbit	400 kHz	900 ns	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active

Engineering Selection Recommendations

Direct Equivalent (Full Specification Match):

CAV24C02YE-GT3 from onsemi provides complete electrical and thermal specification alignment with the 24LC024-E/ST. This part maintains identical supply voltage range (2.5V ~ 5.5V), operating temperature range (-40°C ~ 125°C), clock frequency (400 kHz), access time (900 ns), and write cycle time (5ms). The device carries AEC-Q100 automotive qualification and ROHS3 compliance. This part is suitable for direct substitution in applications requiring the full temperature and voltage operating range.

Compatible Substitutes with Reduced Temperature Range:

M24C02-FDW6TP and M34E02-FDW6TP from STMicroelectronics are compatible substitutes for applications operating within -40°C to 85°C temperature range. Both devices maintain 400 kHz I2C clock frequency, 900 ns access time, and 5ms write cycle time. M34E02-FDW6TP carries verified programmability status. Supply voltage range is 1.7V ~ 5.5V, which encompasses the 2.5V minimum requirement of the original part.

Enhanced Performance Alternatives:

M24C02-DRDW3TP/K and M24C02-DRDW8TP/K from STMicroelectronics offer enhanced I2C clock frequency (1 MHz) and faster access time (450 ns) with reduced write cycle time (4ms). These parts support the full -40°C to 125°C operating range (M24C02-DRDW3TP/K) or -40°C to 105°C (M24C02-DRDW8TP/K). Supply voltage range is 1.8V ~ 5.5V. Both carry AEC-Q100 automotive qualification. These parts are suitable for applications requiring faster I2C communication speeds.

Lower Voltage Supply Alternatives:

BR24G02FVT-3GE2 and BR34E02FVT-3E2 from Rohm Semiconductor support extended lower voltage operation (1.6V and 1.7V respectively) while maintaining 2Kbit capacity and 400 kHz I2C operation. Operating temperature range is -40°C to 85°C. These parts are suitable for battery-powered or low-voltage applications where the reduced temperature range is acceptable.

All substitute parts listed maintain ROHS3 compliance and non-volatile EEPROM memory technology. Product status is active for all alternatives.

Frequently Asked Questions (FAQ)

Q: Can I use CAV24C02YE-GT3 as a direct replacement for 24LC024-E/ST?

A: Yes. CAV24C02YE-GT3 matches all critical electrical and thermal specifications including 2Kbit capacity, I2C interface, 400 kHz clock frequency, 900 ns access time, 2.5V ~ 5.5V supply voltage range, and -40°C ~ 125°C operating temperature range. Both are packaged in 8-TSSOP surface mount configuration.

Q: What is the difference between M24C02-FDW6TP and M24C02-DRDW3TP/K?

A: M24C02-FDW6TP operates at 400 kHz I2C clock frequency with 900 ns access time and supports -40°C to 85°C temperature range. M24C02-DRDW3TP/K operates at 1 MHz I2C clock frequency with 450 ns access time and supports -40°C to 125°C temperature range. Both maintain 2Kbit capacity and 8-TSSOP package. The DRDW3TP variant offers faster communication speed and extended temperature range.

Q: Are the Rohm Semiconductor parts (BR24G02FVT-3GE2 and BR34E02FVT-3E2) compatible with 24LC024-E/ST?

A: These parts are compatible for applications operating within -40°C to 85°C temperature range. Both maintain 2Kbit capacity, I2C interface, 400 kHz clock frequency, and 8-TSSOP package. However, the maximum operating temperature is reduced from 125°C to 85°C compared to the original part. Supply voltage ranges are 1.6V ~ 5.5V and 1.7V ~ 5.5V respectively, which encompass the 2.5V minimum requirement.

Q: What does "verified programmability" mean for 24LC024-E/ST and M34E02-FDW6TP?

A: Verified programmability indicates that the part has been tested and confirmed to support programming operations through the I2C interface. This status is provided by the component supplier based on validation testing.

Q: Can I use M24C02-DRDW8TP/K in place of 24LC024-E/ST?

A: M24C02-DRDW8TP/K is compatible for applications operating within -40°C to 105°C temperature range. It provides enhanced I2C clock frequency (1 MHz) and faster access time (450 ns). The maximum operating temperature is 105°C, which is lower than the original part's 125°C specification. This part is suitable if your application does not require operation above 105°C.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference carry ROHS3 compliance status, matching the environmental compliance of the 24LC024-E/ST.

Q: What is the significance of the 8-TSSOP-B package designation for Rohm parts?

A: The 8-TSSOP-B designation indicates a variant of the 8-TSSOP package. Both 8-TSSOP and 8-TSSOP-B maintain the same physical dimensions (0.173", 4.40mm width) and are compatible for surface mount PCB assembly. The "-B" suffix indicates a manufacturer-specific package variant.

Q: Which substitute part has the fastest I2C communication speed?

A: M24C02-DRDW3TP/K and M24C02-DRDW8TP/K both operate at 1 MHz I2C clock frequency, which is 2.5 times faster than the 400 kHz specification of the original 24LC024-E/ST and other 400 kHz alternatives.

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