Equivalent & Substitute Parts for 24LCS52-I/ST

Part Overview

The 24LCS52-I/ST is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time in an 8-TSSOP surface mount package. This device operates across a supply voltage range of 2.2V to 5.5V and temperature range of -40°C to 85°C, with ROHS3 compliance and unlimited moisture sensitivity level. The part is currently in active production status with 1071 units in stock. 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	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	2.2V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-TSSOP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24LCS52-I/ST is determined by the following critical parameters:

Primary Matching Criteria:

Memory capacity of 2Kbit with 256 x 8 organization
I2C serial interface protocol
8-TSSOP surface mount package (0.173", 4.40mm width)
Operating temperature range of -40°C to 85°C
ROHS3 compliance and unlimited MSL rating

Secondary Compatibility Factors:

Supply voltage range must encompass or be compatible with 2.2V ~ 5.5V
Clock frequency of 400 kHz or higher (higher frequencies are backward compatible)
Access time of 900 ns or faster
Write cycle time of 5ms or less

Substitute parts are grouped into two categories based on clock frequency performance: standard 400 kHz I2C devices and enhanced 1 MHz I2C devices. Both categories maintain full functional compatibility with the 24LCS52-I/ST in circuit applications requiring 2Kbit EEPROM storage with I2C communication.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Package	Inventory
24LCS52-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	2.2V ~ 5.5V	8-TSSOP	1071 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
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
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
BR24L02FVT-WE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.8V ~ 5.5V	8-TSSOP-B	8215 Pcs
BR34E02FVT-3E2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.7V ~ 5.5V	8-TSSOP-B	976 Pcs
CAT34C02YI-GT5A	onsemi	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	8-TSSOP	21561 Pcs
M24C02-DRDW3TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	1.8V ~ 5.5V	8-TSSOP	2628 Pcs

Engineering Selection Recommendations

Microchip Technology Substitutes (24AA02-I/ST, 24AA024-I/ST): These parts maintain identical electrical specifications to the 24LCS52-I/ST with 400 kHz I2C operation and 900 ns access time. Both are ROHS3 compliant with unlimited MSL rating and active product status. The 24AA02-I/ST offers higher inventory availability at 3200 units. These represent direct functional equivalents with extended lower voltage operation down to 1.7V.

Microchip Technology Enhanced Performance (AT24CS02-XHM-T, AT24HC02C-XHM-B): These 1 MHz I2C devices provide faster access time of 550 ns while maintaining 2Kbit capacity and 8-TSSOP packaging. Both are ROHS3 compliant with active status. The AT24CS02-XHM-T offers superior inventory availability at 15684 units and is supplied in Cut Tape & Digi-Reel packaging format.

Rohm Semiconductor Substitutes (BR24G02FVT-3AGE2, BR24G02FVT-3GE2, BR24L02FVT-WE2, BR34E02FVT-3E2): All Rohm parts maintain 2Kbit capacity with I2C interface in 8-TSSOP-B package variant. BR24G02FVT-3GE2 and BR24L02FVT-WE2 operate at 400 kHz matching the main part frequency. BR24G02FVT-3AGE2 provides 1 MHz operation. All are ROHS3 compliant with active status. BR24L02FVT-WE2 offers highest inventory at 8215 units.

onsemi Substitute (CAT34C02YI-GT5A): This part provides exact parameter matching with 400 kHz I2C, 900 ns access time, and 2Kbit capacity in standard 8-TSSOP package. ROHS3 compliant with active status and highest inventory availability at 21561 units.

STMicroelectronics Automotive Grade (M24C02-DRDW3TP/K): This 1 MHz device features AEC-Q100 automotive qualification with extended operating temperature to 125°C. It provides 450 ns access time and 4ms write cycle time. ROHS3 compliant with active status. Selection of this part is appropriate for automotive or extended temperature applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 24LCS52-I/ST with a 1 MHz I2C EEPROM device?

A: Yes. Devices operating at 1 MHz I2C frequency (AT24CS02-XHM-T, AT24HC02C-XHM-B, BR24G02FVT-3AGE2, M24C02-DRDW3TP/K) are fully compatible substitutes. Higher clock frequency operation is backward compatible with 400 kHz I2C bus systems. The 24LCS52-I/ST will operate correctly on a 1 MHz capable device.

Q: What is the difference between 8-TSSOP and 8-TSSOP-B packages?

A: Both packages are 8-pin thin shrink small outline packages with identical 0.173" width and 4.40mm dimensions. The -B designation indicates a variant from specific manufacturers (Rohm Semiconductor). Pin configuration and footprint compatibility are maintained across both variants for this product category.

Q: Does the 24LCS52-I/ST require a minimum supply voltage of 2.2V?

A: The 24LCS52-I/ST operates within 2.2V to 5.5V supply range. Substitute parts from Microchip (24AA02-I/ST, 24AA024-I/ST, AT24CS02-XHM-T, AT24HC02C-XHM-B) extend lower voltage operation to 1.7V, providing additional design flexibility for low-power applications. Rohm and onsemi substitutes operate from 1.6V to 1.7V minimum.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance matching the 24LCS52-I/ST specification. All parts also carry unlimited moisture sensitivity level (MSL 1) and REACH unaffected status.

Q: Which substitute offers the best inventory availability?

A: The CAT34C02YI-GT5A from onsemi provides the highest inventory at 21561 units with exact parameter matching to the 24LCS52-I/ST including 400 kHz I2C operation and 900 ns access time.

Q: Is the M24C02-DRDW3TP/K suitable for standard commercial applications?

A: The M24C02-DRDW3TP/K is qualified to AEC-Q100 automotive standards with extended operating temperature to 125°C. While suitable for commercial applications, this automotive-grade device is optimized for automotive and industrial temperature environments. Standard commercial applications may select non-automotive alternatives.

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