24LC024T/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC024T/ST is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology, packaged in 8-TSSOP surface mount configuration. This 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 0°C to 70°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent memory capacity, interface protocol, package type, and electrical specifications align within acceptable operational parameters.

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	0°C ~ 70°C
Package Type	8-TSSOP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Core Compatibility Requirements:

Memory Size: 2Kbit (256 x 8 organization)
Memory Interface: I2C protocol
Package Type: 8-TSSOP surface mount
Memory Format: EEPROM non-volatile technology

Electrical Parameter Compatibility:

I2C Clock Frequency: 400 kHz minimum (higher frequencies are backward compatible)
Access Time: 900 ns or faster
Write Cycle Time: 5ms or faster
Voltage Supply Range: Must encompass or exceed 2.5V ~ 5.5V minimum requirement

Operational Constraints:

Operating Temperature: Minimum -40°C to maximum 85°C or higher (original part operates 0°C ~ 70°C, which falls within extended range specifications)
Product Status: Active
RoHS Compliance: ROHS3 Compliant

Substitute parts meeting all core compatibility requirements and electrical parameters are classified as direct functional equivalents. Parts with extended temperature ranges or higher clock frequencies provide enhanced performance margins while maintaining full backward compatibility.

Parameter Comparison

Part Number	Manufacturer	Memory Size	I2C Frequency	Access Time	Voltage Supply	Operating Temp	Package	Status
24LC024T/ST	Microchip	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-TSSOP	Active
24AA024T-I/ST	Microchip	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24AA02T-I/ST	Microchip	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24LC024T-I/ST	Microchip	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24LC025T-I/ST	Microchip	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
24LC02BT-I/ST	Microchip	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
34AA02T-E/ST	Microchip	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
AT24CS02-XHM-T	Microchip	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
AT24HC02C-XHM-T	Microchip	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
AT34C02D-XHM-T	Microchip	2Kbit	1 MHz	N/A	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24G02FVT-3AGE2	Rohm Semiconductor	2Kbit	1 MHz	N/A	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active

Engineering Selection Recommendations

Tier 1 Direct Substitutes (Identical Specifications): 24LC024T-I/ST, 24LC025T-I/ST, and 24LC02BT-I/ST maintain the original 2.5V ~ 5.5V supply voltage specification with extended operating temperature range (-40°C ~ 85°C). These parts are fully interchangeable for applications requiring the specified voltage floor of 2.5V.

Tier 2 Enhanced Substitutes (Extended Voltage Range): 24AA024T-I/ST, 24AA02T-I/ST, and 34AA02T-E/ST support lower supply voltage (1.7V minimum) while maintaining 400 kHz I2C operation and 900 ns access time. The 34AA02T-E/ST extends operating temperature to -40°C ~ 125°C. These are suitable for low-power applications and wider temperature environments.

Tier 3 High-Speed Substitutes (Enhanced Performance): AT24CS02-XHM-T, AT24HC02C-XHM-T, and AT34C02D-XHM-T operate at 1 MHz I2C frequency with 550 ns access time, providing faster data transfer while maintaining 2Kbit capacity and 8-TSSOP packaging. These support 1.7V minimum supply voltage. Backward compatibility with 400 kHz I2C systems is maintained.

Cross-Manufacturer Substitute: BR24G02FVT-3AGE2 (Rohm Semiconductor) provides equivalent 2Kbit I2C EEPROM functionality in 8-TSSOP package with 1 MHz operation and 1.6V minimum supply voltage. All parts maintain ROHS3 compliance and Active product status.

Frequently Asked Questions (FAQ)

Q: Can 24AA024T-I/ST replace 24LC024T/ST in all applications? A: Yes, with consideration for supply voltage. The 24AA024T-I/ST supports 1.7V ~ 5.5V, which encompasses the original 2.5V ~ 5.5V requirement. Operating temperature extends to -40°C ~ 85°C. Electrical and functional specifications are identical at 400 kHz I2C operation.

Q: What is the difference between 24LC and 24AA series? A: The 24LC series specifies 2.5V minimum supply voltage, while 24AA series supports 1.7V minimum. Both maintain identical I2C protocol, 2Kbit capacity, and 8-TSSOP packaging. The 24AA series is suitable for lower-voltage applications.

Q: Are AT24CS02 and AT24HC02 compatible with 24LC024T/ST? A: Yes. Both operate at 1 MHz I2C frequency (backward compatible with 400 kHz systems) with faster 550 ns access time. They maintain 2Kbit capacity and 8-TSSOP packaging. Supply voltage is 1.7V ~ 5.5V. These provide performance enhancement while maintaining functional compatibility.

Q: Can I use BR24G02FVT-3AGE2 (Rohm) as a substitute? A: Yes. The BR24G02FVT-3AGE2 provides equivalent 2Kbit I2C EEPROM in 8-TSSOP package with 1 MHz operation. It supports 1.6V ~ 5.5V supply voltage and -40°C ~ 85°C operating temperature. Cross-manufacturer substitution is valid when electrical specifications align.

Q: What determines if a part is a valid substitute? A: Valid substitutes must match: 2Kbit memory capacity, 256 x 8 organization, I2C interface, 8-TSSOP package, and surface mount mounting type. Supply voltage range must support the original 2.5V minimum requirement. I2C frequency of 400 kHz or higher is acceptable. All substitutes must be Active status and ROHS3 compliant.

Q: Does operating temperature range affect substitution? A: Extended operating temperature ranges (such as -40°C ~ 85°C versus 0°C ~ 70°C) do not prevent substitution. The original part's operating range falls within the extended range. However, applications requiring the original 0°C ~ 70°C specification should verify that substitute parts meet this narrower requirement if thermal constraints exist.

Q: Are there packaging differences between substitutes? A: All listed substitutes use 8-TSSOP surface mount package with 0.173" width (4.40mm). Packaging variants include Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® options, which are supply format differences, not functional differences. PCB footprint compatibility is maintained across all substitutes.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message