24LC02BH-I/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC02BH-I/ST is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology in 8-TSSOP surface mount packaging. 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 the -40°C to 85°C operating temperature range. The part is RoHS3 compliant with MSL Level 1 rating and maintains active product status. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters to ensure functional interchangeability in circuit applications.

Key Parameters

Parameter	24LC02BH-I/ST
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 ~ 85°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 24LC02BH-I/ST are categorized based on the following critical parameters that determine functional interchangeability:

Primary Substitution Criteria:

Memory Size: 2Kbit (256 x 8 organization)
Memory Interface: I2C protocol
Package Type: 8-TSSOP surface mount
Operating Temperature Range: -40°C ~ 85°C
Write Cycle Time: 5ms

Secondary Compatibility Parameters:

Clock Frequency: 400 kHz (standard) or 1 MHz (enhanced)
Access Time: 900 ns (standard) or faster
Supply Voltage Range: Minimum 2.5V to 5.5V (or wider range 1.7V to 5.5V)

Parts are grouped into three categories: MFR Recommended substitutes (manufacturer-approved alternatives), Parametric Equivalents (identical electrical specifications), and cross-manufacturer options (Rohm Semiconductor). All substitute parts maintain RoHS3 compliance, MSL Level 1 rating, and active product status.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Package	Inventory
24LC02BH-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-TSSOP	693 Pcs
24AA02-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	8-TSSOP	3200 Pcs
24AA024-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	8-TSSOP	1342 Pcs
24LC024H-I/ST	Microchip Technology	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	8-TSSOP	1582 Pcs
AT24CS02-XHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-TSSOP	15684 Pcs
AT24HC02C-XHM-B	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-TSSOP	2062 Pcs
24LC024-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-TSSOP	2947 Pcs
24LC025-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-TSSOP	47800 Pcs
24LC02B-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-TSSOP	7600 Pcs
BR24G02FVT-3AGE2	Rohm Semiconductor	2Kbit	1 MHz	Not specified	1.6V ~ 5.5V	8-TSSOP-B	2665 Pcs
BR24G02FVT-3GE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	8-TSSOP-B	3225 Pcs

Engineering Selection Recommendations

Direct Parametric Equivalents (Identical Specifications): 24LC024-I/ST, 24LC025-I/ST, and 24LC02B-I/ST are parametric equivalents with identical memory size, clock frequency, access time, and supply voltage range. These parts are verified for compatibility and maintain the same 8-TSSOP package footprint.

Extended Supply Voltage Range Substitutes: 24AA02-I/ST and 24AA024-I/ST provide identical electrical performance with extended lower supply voltage support (1.7V minimum vs. 2.5V). These are suitable for applications requiring operation at lower voltage levels while maintaining all other specifications.

Enhanced Performance Substitutes: 24LC024H-I/ST, AT24CS02-XHM-T, and AT24HC02C-XHM-B operate at 1 MHz clock frequency with faster access times (400 ns or 550 ns vs. 900 ns). These parts support higher I2C bus speeds and reduced access latency while maintaining 2Kbit capacity and 8-TSSOP packaging. AT24CS02-XHM-T and AT24HC02C-XHM-B also provide extended supply voltage range (1.7V minimum).

Cross-Manufacturer Alternatives: BR24G02FVT-3AGE2 (1 MHz) and BR24G02FVT-3GE2 (400 kHz) from Rohm Semiconductor provide equivalent 2Kbit I2C EEPROM functionality in 8-TSSOP-B packaging with extended supply voltage range (1.6V minimum). All substitute parts maintain RoHS3 compliance and MSL Level 1 rating.

Frequently Asked Questions (FAQ)

Q: Can 24LC025-I/ST directly replace 24LC02BH-I/ST? A: Yes. 24LC025-I/ST is a parametric equivalent with identical memory capacity (2Kbit), I2C interface, clock frequency (400 kHz), access time (900 ns), supply voltage range (2.5V ~ 5.5V), and 8-TSSOP package. No circuit modifications are required.

Q: What is the difference between 400 kHz and 1 MHz clock frequency options? A: Clock frequency determines the maximum I2C bus speed. 400 kHz parts (24LC02BH-I/ST, 24LC024-I/ST, 24LC025-I/ST, 24LC02B-I/ST) operate at standard I2C speed. 1 MHz parts (24LC024H-I/ST, AT24CS02-XHM-T, AT24HC02C-XHM-B, BR24G02FVT-3AGE2) support faster bus communication. Both are compatible with standard 400 kHz I2C systems; 1 MHz parts simply offer higher speed capability.

Q: Are Rohm BR24G02 parts compatible with Microchip 24LC02BH-I/ST? A: BR24G02FVT-3GE2 is compatible with 24LC02BH-I/ST, matching 2Kbit capacity, 400 kHz I2C frequency, and 8-TSSOP package. BR24G02FVT-3AGE2 operates at 1 MHz and provides enhanced performance. Both Rohm parts use 8-TSSOP-B package variant with identical footprint and pinout.

Q: What does extended supply voltage range (1.7V vs. 2.5V) mean for circuit design? A: Parts with 1.7V minimum supply voltage (24AA02-I/ST, 24AA024-I/ST, AT24CS02-XHM-T, AT24HC02C-XHM-B, BR24G02 series) operate across a wider voltage range and are suitable for low-power applications. Parts with 2.5V minimum (24LC02BH-I/ST and parametric equivalents) require higher minimum supply voltage. Selection depends on system power supply specifications.

Q: Does access time affect circuit functionality? A: Access time (900 ns vs. 400 ns vs. 550 ns) specifies the delay from I2C address/command to data availability. Faster access times reduce latency in read operations. All specified parts meet standard I2C timing requirements; selection depends on application timing constraints.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain RoHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original 24LC02BH-I/ST specifications.

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