Equivalent & Substitute Parts for 24LC024/SN

Part Overview

The 24LC024/SN is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. Housed in an 8-SOIC surface mount package, this non-volatile memory device operates across a 2.5V to 5.5V supply range and supports industrial temperature applications from 0°C to 70°C. The device is ROHS3 compliant and carries unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to address inventory availability, extended temperature range requirements, or enhanced performance specifications while maintaining functional compatibility within I2C-based memory applications.

Key Parameters

Parameter	24LC024/SN
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5 ms
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
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria:

Memory Size: 2Kbit (fixed requirement)
Memory Organization: 256 x 8 (fixed requirement)
Memory Interface: I2C (fixed requirement)
Package / Case: 8-SOIC (fixed requirement)
Mounting Type: Surface Mount (fixed requirement)

Allowable Parameter Variations:

Clock Frequency: 400 kHz or higher (backward compatible)
Access Time: 900 ns or faster (backward compatible)
Voltage Supply Range: Must encompass or exceed 2.5V ~ 5.5V minimum
Operating Temperature: May extend beyond 0°C ~ 70°C range
Write Cycle Time: 5 ms (fixed requirement)

Substitute parts are grouped by their deviation from the main part specifications. Parts with identical electrical specifications but different temperature ratings or supply voltage ranges are considered direct functional equivalents. Parts with enhanced performance (higher clock frequency, faster access time) are backward compatible but offer improved operational capability.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	MSL Rating	Product Status
24LC024/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	1 (Unlimited)	Active
24AA02-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1 (Unlimited)	Active
24AA024-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1 (Unlimited)	Active
24AA02H-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1 (Unlimited)	Active
24LC024-E/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	3 (168 Hours)	Active
24LC024-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1 (Unlimited)	Active
24LC024H-E/SN	Microchip Technology	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	1 (Unlimited)	Active
24LC024H-I/SN	Microchip Technology	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1 (Unlimited)	Active
24LC025-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1 (Unlimited)	Active
24LC02B-E/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	1 (Unlimited)	Active
24LC02B-I/SN	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1 (Unlimited)	Active

Engineering Selection Recommendations

Direct Functional Equivalents (Identical Electrical Specifications):

24LC024-I/SN and 24LC02B-I/SN are direct functional equivalents to 24LC024/SN, sharing identical electrical parameters with extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). Both parts carry ROHS3 compliance and unlimited MSL rating. 24LC024-I/SN is verified for DiGi-Electronics programmability, while 24LC02B-I/SN is also verified. Selection between these parts depends on inventory availability and specific application temperature requirements.

Extended Temperature Range Alternatives:

24LC024-E/SN and 24LC02B-E/SN extend the operating temperature range to -40°C to 125°C while maintaining 2.5V to 5.5V supply voltage compatibility. 24LC024-E/SN carries MSL rating 3 (168 hours), while 24LC02B-E/SN maintains MSL rating 1 (unlimited). These parts are suitable for industrial and automotive applications requiring wider temperature operation.

Enhanced Performance Variants:

24LC024H-E/SN and 24LC024H-I/SN offer improved performance with 1 MHz clock frequency and 400 ns access time (versus 400 kHz and 900 ns). Both maintain 2.5V to 5.5V supply voltage and 8-SOIC packaging. 24LC024H-E/SN supports -40°C to 125°C operation, while 24LC024H-I/SN operates from -40°C to 85°C. These variants are backward compatible and suitable for applications requiring faster I2C communication.

Lower Supply Voltage Options:

24AA02-I/SN, 24AA024-I/SN, and 24AA02H-I/SN support extended supply voltage range of 1.7V to 5.5V, enabling operation in low-power applications. All three parts operate from -40°C to 85°C and maintain 2Kbit capacity with 8-SOIC packaging. 24AA02-I/SN and 24AA024-I/SN operate at 400 kHz with 900 ns access time, while 24AA02H-I/SN provides 1 MHz operation with 400 ns access time.

Selection Criteria Based on Product Status and Compliance:

All listed substitute parts maintain Active product status and ROHS3 compliance. Parts verified for DiGi-Electronics programmability (24LC024/SN, 24AA02-I/SN, 24LC024-I/SN, 24LC02B-E/SN, 24LC02B-I/SN) are recommended for applications requiring confirmed programmability support. Parts with Not Verified status (24AA02H-I/SN, 24LC024-E/SN, 24LC024H-E/SN, 24LC024H-I/SN, 24LC025-I/SN) remain functionally compatible but lack explicit programmability verification.

Frequently Asked Questions (FAQ)

Q: Can 24LC024H-I/SN replace 24LC024/SN in existing designs?

A: Yes. 24LC024H-I/SN is backward compatible with 24LC024/SN. Both share identical 2Kbit capacity, 256 x 8 organization, I2C interface, 2.5V to 5.5V supply voltage, and 8-SOIC packaging. The 24LC024H-I/SN offers enhanced performance with 1 MHz clock frequency and 400 ns access time. Operating temperature extends to -40°C to 85°C, exceeding the original 0°C to 70°C range.

Q: What is the difference between 24LC024-I/SN and 24LC024-E/SN?

A: Both parts share identical electrical specifications: 2Kbit capacity, 400 kHz clock frequency, 900 ns access time, and 2.5V to 5.5V supply voltage. The primary difference is operating temperature range: 24LC024-I/SN operates from -40°C to 85°C with MSL rating 1 (unlimited), while 24LC024-E/SN operates from -40°C to 125°C with MSL rating 3 (168 hours). Select 24LC024-E/SN for high-temperature industrial applications.

Q: Are 24AA02-I/SN and 24LC024/SN pin-compatible?

A: Yes. Both parts use 8-SOIC packaging with identical pinout. 24AA02-I/SN is functionally compatible with 24LC024/SN, offering extended supply voltage range (1.7V to 5.5V versus 2.5V to 5.5V) and extended operating temperature (-40°C to 85°C versus 0°C to 70°C). Electrical performance parameters are identical.

Q: Which substitute part offers the fastest I2C operation?

A: 24LC024H-E/SN and 24LC024H-I/SN both operate at 1 MHz clock frequency with 400 ns access time, compared to 400 kHz and 900 ns for the original 24LC024/SN. Both H-series variants maintain 2Kbit capacity and 8-SOIC packaging, providing 2.5x faster clock operation and improved access time.

Q: Can I use 24AA02-I/SN in a 2.5V minimum supply voltage application?

A: Yes. 24AA02-I/SN supports supply voltage range of 1.7V to 5.5V, which encompasses the 2.5V minimum requirement. The part is fully compatible with applications requiring 2.5V to 5.5V operation, offering additional headroom for lower voltage designs.

Q: What is the significance of MSL rating differences between substitute parts?

A: MSL (Moisture Sensitivity Level) rating indicates moisture exposure limits during storage and handling. MSL 1 (unlimited) parts like 24LC024/SN and 24LC02B-I/SN have no moisture exposure restrictions. MSL 3 (168 hours) parts like 24LC024-E/SN must be used within 168 hours of moisture exposure. Select MSL 1 parts for applications with extended storage or handling requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status, matching the original 24LC024/SN specification. All parts are suitable for applications requiring RoHS compliance.

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