Equivalent & Substitute Parts for 24LC025/SN

Part Overview

The 24LC025/SN is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time in an 8-SOIC surface mount package. This device is classified as Active product status and is ROHS3 compliant. Substitute parts are necessary when the primary part becomes unavailable, when extended temperature range operation is required, when higher clock frequency performance is needed, or when alternative supply chain sources are preferred while maintaining functional and electrical compatibility.

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 / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC025/SN is determined by the following critical parameters:

Core Compatibility Requirements:

Memory Size: 2Kbit (256 x 8 organization)
Memory Interface: I2C protocol
Package / Case: 8-SOIC form factor
Mounting Type: Surface Mount
Write Cycle Time: 5ms

Performance Parameters (Backward Compatible):

Clock Frequency: 400 kHz or higher
Access Time: 900 ns or faster
Voltage Supply Range: Must encompass or exceed 2.5V ~ 5.5V
Operating Temperature: Must encompass or exceed 0°C ~ 70°C

Substitute parts meeting these criteria maintain functional equivalence and can be directly substituted in circuit designs without modification. Parts with extended temperature ranges, higher clock frequencies, or wider voltage ranges provide enhanced performance margins and are considered direct substitutes.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	Product Status
24LC025/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	Active
24AA02-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24AA024-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24AA02H-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24LC024-E/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active
24LC024-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24LC024H-E/SN	Microchip Technology	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active
24LC024H-I/SN	Microchip Technology	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24LC025-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24LC02B-E/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active
24LC02B-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring continued availability and regulatory conformance. Selection among equivalent parts should be based on the following criteria:

Standard Operating Conditions (0°C ~ 70°C): 24LC025-I/SN and 24LC02B-I/SN provide direct functional equivalence with identical electrical performance and extended temperature capability beyond the original specification.

Extended Temperature Range Requirements (-40°C ~ 85°C or -40°C ~ 125°C): 24AA02-I/SN, 24AA024-I/SN, 24AA02H-I/SN, 24LC024-I/SN, 24LC024-E/SN, 24LC02B-E/SN, and 24LC02B-I/SN support expanded operating ranges. The 24AA series offers the widest voltage supply range (1.7V ~ 5.5V).

High-Speed I2C Applications (1 MHz): 24LC024H-E/SN and 24LC024H-I/SN provide 1 MHz clock frequency operation with 400 ns access time, suitable for applications requiring faster I2C bus speeds while maintaining 2Kbit memory capacity.

Verified Programmability: 24AA02-I/SN, 24AA024-I/SN, 24LC024-I/SN, 24LC02B-E/SN, and 24LC02B-I/SN carry verified programmability status, confirming compatibility with standard programming equipment and procedures.

Frequently Asked Questions (FAQ)

Q: Can 24LC024H-E/SN or 24LC024H-I/SN be used as direct substitutes for 24LC025/SN?

A: Yes. Both parts maintain 2Kbit memory capacity, I2C interface, 8-SOIC package, and 5ms write cycle time. The 1 MHz clock frequency and 400 ns access time represent performance enhancements over the 400 kHz / 900 ns specification. Operating temperature range extends to -40°C ~ 125°C (24LC024H-E/SN) or -40°C ~ 85°C (24LC024H-I/SN), exceeding the original 0°C ~ 70°C range.

Q: What is the difference between 24AA02-I/SN and 24LC025/SN?

A: Both are 2Kbit I2C EEPROM devices in 8-SOIC packages with identical clock frequency (400 kHz), access time (900 ns), and write cycle time (5ms). The 24AA02-I/SN offers wider voltage supply range (1.7V ~ 5.5V versus 2.5V ~ 5.5V) and extended operating temperature (-40°C ~ 85°C versus 0°C ~ 70°C), making it suitable for low-voltage and wide-temperature applications.

Q: Are all substitute parts compatible with the same PCB layout?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pin configuration and spacing, enabling direct PCB footprint compatibility without layout modifications.

Q: Which substitute part offers the best low-voltage performance?

A: The 24AA02-I/SN, 24AA024-I/SN, and 24AA02H-I/SN support operation down to 1.7V supply voltage, compared to 2.5V minimum for other substitutes. These parts are optimal for battery-powered or low-voltage system applications.

Q: Can I use a substitute part with higher clock frequency in a 400 kHz I2C bus?

A: Yes. The 24LC024H-E/SN and 24LC024H-I/SN rated for 1 MHz operation are backward compatible with 400 kHz I2C buses. Devices rated for higher frequencies operate correctly at lower bus speeds.

Q: What is the significance of the temperature grade suffix (E versus I)?

A: The suffix indicates operating temperature range. The "E" grade supports -40°C ~ 125°C (extended industrial range), while the "I" grade supports -40°C ~ 85°C (standard industrial range). Select based on application thermal requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message