Equivalent & Substitute Parts for 24C02C-I/ST

Part Overview

The 24C02C-I/ST is a 2Kbit EEPROM memory IC with I2C interface manufactured by Microchip Technology. This non-volatile memory device operates at 400 kHz clock frequency with 900 ns access time and is housed in an 8-TSSOP surface mount package. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement in circuit applications. Substitution necessity arises from inventory availability, supply chain optimization, or design flexibility requirements while maintaining functional compatibility.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Write Cycle Time	1ms

Substitute Part Grouping Explanation

Substitution compatibility for the 24C02C-I/ST is determined by the following critical parameters:

Memory Capacity: 2Kbit with 256 x 8 organization (non-negotiable)
Interface Protocol: I2C serial communication (non-negotiable)
Package Type: 8-TSSOP surface mount form factor (non-negotiable)
Operating Temperature Range: -40°C ~ 85°C (non-negotiable)
Clock Frequency: 400 kHz minimum (higher frequencies are compatible)
Supply Voltage: Minimum 4.5V required for 24C02C-I/ST operation
Access Time: 900 ns or faster (lower values are compatible)
Write Cycle Time: 1ms or faster (lower values are compatible)

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents: Parts with identical or superior electrical specifications that operate within the 24C02C-I/ST voltage range (4.5V ~ 5.5V) and maintain all functional parameters.

Category B - Extended Voltage Range Substitutes: Parts with wider supply voltage ranges (1.7V ~ 5.5V or 2.5V ~ 5.5V) that provide additional design flexibility while maintaining all other critical parameters. These parts are electrically compatible when operated within the 4.5V ~ 5.5V window.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time (ns)	Voltage Supply	Write Cycle Time	Package	Product Status
24C02C-I/ST	Microchip Technology	2Kbit	400 kHz	900	4.5V ~ 5.5V	1ms	8-TSSOP	Active
24AA02-I/ST	Microchip Technology	2Kbit	400 kHz	900	1.7V ~ 5.5V	5ms	8-TSSOP	Active
24AA024-I/ST	Microchip Technology	2Kbit	400 kHz	900	1.7V ~ 5.5V	5ms	8-TSSOP	Active
24LC024-I/ST	Microchip Technology	2Kbit	400 kHz	900	2.5V ~ 5.5V	5ms	8-TSSOP	Active
24LC024H-I/ST	Microchip Technology	2Kbit	1 MHz	400	2.5V ~ 5.5V	5ms	8-TSSOP	Active
24LC025-I/ST	Microchip Technology	2Kbit	400 kHz	900	2.5V ~ 5.5V	5ms	8-TSSOP	Active
24LC02B-I/ST	Microchip Technology	2Kbit	400 kHz	900	2.5V ~ 5.5V	5ms	8-TSSOP	Active
AT24CS02-XHM-T	Microchip Technology	2Kbit	1 MHz	550	1.7V ~ 5.5V	5ms	8-TSSOP	Active
AT24HC02C-XHM-B	Microchip Technology	2Kbit	1 MHz	550	1.7V ~ 5.5V	5ms	8-TSSOP	Active
BR24G02FVT-3AGE2	Rohm Semiconductor	2Kbit	1 MHz	Not specified	1.6V ~ 5.5V	5ms	8-TSSOP-B	Active
BR24G02FVT-3GE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	5ms	8-TSSOP-B	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compliance consistency with the 24C02C-I/ST.

Microchip Technology 24LC Series (24LC024-I/ST, 24LC025-I/ST, 24LC02B-I/ST): These parts provide direct functional substitution with extended voltage range (2.5V ~ 5.5V) and verified programmability status for 24LC024-I/ST and 24LC02B-I/ST. Higher inventory availability (2947 to 7600 units) supports supply chain flexibility.

Microchip Technology 24AA Series (24AA02-I/ST, 24AA024-I/ST): These parts offer the widest voltage range (1.7V ~ 5.5V) with identical electrical performance at 400 kHz operation. Extended voltage capability provides design margin for low-power applications.

Microchip Technology High-Speed Options (24LC024H-I/ST, AT24CS02-XHM-T, AT24HC02C-XHM-B): These parts operate at 1 MHz clock frequency with improved access times (400-550 ns), providing performance enhancement while maintaining 2Kbit capacity and I2C interface. AT24CS02-XHM-T offers highest inventory (15684 units) with 1.7V ~ 5.5V voltage range.

Rohm Semiconductor BR24G02 Series (BR24G02FVT-3AGE2, BR24G02FVT-3GE2): These parts provide alternative manufacturer sourcing with 1 MHz (3AGE2) and 400 kHz (3GE2) options. Extended voltage range (1.6V ~ 5.5V) and 8-TSSOP-B package variant support design flexibility and supply diversification.

Frequently Asked Questions (FAQ)

Q: Can 24AA02-I/ST replace 24C02C-I/ST in existing designs?

A: Yes. The 24AA02-I/ST maintains identical memory capacity (2Kbit), I2C interface, 400 kHz clock frequency, and 8-TSSOP package. The extended voltage range (1.7V ~ 5.5V) is compatible when the circuit operates within the 24C02C-I/ST specification window of 4.5V ~ 5.5V. Write cycle time increases from 1ms to 5ms, which is acceptable for most applications.

Q: What is the difference between 24LC024-I/ST and 24LC025-I/ST?

A: Both parts are functionally identical with 2Kbit capacity, 400 kHz I2C operation, and 8-TSSOP packaging. The primary difference is inventory availability: 24LC025-I/ST has significantly higher stock (47800 units) compared to 24LC024-I/ST (2947 units). Electrical specifications and performance are equivalent.

Q: Are high-speed variants (24LC024H-I/ST, AT24CS02-XHM-T) backward compatible?

A: Yes. High-speed variants operate at 1 MHz clock frequency with faster access times (400-550 ns versus 900 ns), but maintain full I2C protocol compatibility and 2Kbit memory organization. Circuits designed for 400 kHz operation function correctly with these parts at reduced clock speeds. No design changes are required.

Q: Can Rohm BR24G02 parts substitute for Microchip parts?

A: Yes. BR24G02FVT-3GE2 (400 kHz) and BR24G02FVT-3AGE2 (1 MHz) maintain 2Kbit capacity, I2C interface, and 8-TSSOP package form factor. The 8-TSSOP-B variant is mechanically compatible with standard 8-TSSOP footprints. Extended voltage range (1.6V ~ 5.5V) provides additional design flexibility.

Q: What is the impact of write cycle time differences?

A: The 24C02C-I/ST specifies 1ms write cycle time, while most substitutes specify 5ms. This affects sequential write operations: applications requiring rapid page writes must account for the longer cycle time. For typical applications with infrequent writes, this difference is not operationally significant.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification identical to the 24C02C-I/ST, ensuring regulatory consistency for end-product applications.

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