AT88SC0204CA-SH-T Equivalent & Substitute Parts

Part Overview

The AT88SC0204CA-SH-T is a Secure Memory IC manufactured by Microchip Technology, classified as CryptoMemory® series secure memory for embedded and smart card applications. This 8-SOIC surface mount device provides 2Kbit secure memory storage with I2C interface capability. The part is Active status with 4400 units in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in compatible circuit designs without functional degradation.

Key Parameters

Parameter	AT88SC0204CA-SH-T
Manufacturer	Microchip Technology
Product Type	Secure Memory
Memory Size	2Kbit
Memory Organization	256 x 8
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Packaging Format	Cut Tape (CT) & Digi-Reel®
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of the following parameters:

Primary Substitution Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Memory Size: 2Kbit
Memory Organization: 256 x 8
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Product Status: Active

Secondary Compatibility Factors:

Memory Interface: I2C protocol support
Voltage Supply Range: Overlap with 1.7V ~ 5.5V
Operating Temperature: Minimum -40°C support
Write Cycle Time: 5ms specification
Manufacturer: Microchip Technology

Substitute parts listed below meet all primary criteria and maintain compatibility with the AT88SC0204CA-SH-T in equivalent circuit applications.

Parameter Comparison

Part Number	Manufacturer	Memory Type	Memory Size	Memory Interface	Clock Frequency	Package	Voltage Supply	Operating Temp	RoHS Status	MSL	Product Status
AT88SC0204CA-SH-T	Microchip Technology	Secure Memory	2Kbit	I2C	N/A	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	ROHS3	3	Active
24AA024-I/SN	Microchip Technology	EEPROM	2Kbit	I2C	400 kHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	ROHS3	1	Active
24AA024T-I/SN	Microchip Technology	EEPROM	2Kbit	I2C	400 kHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	ROHS3	3	Active
24AA025T-I/SN	Microchip Technology	EEPROM	2Kbit	I2C	400 kHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	ROHS3	1	Active
24AA02H-I/SN	Microchip Technology	EEPROM	2Kbit	I2C	400 kHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	ROHS3	1	Active
24AA02T-I/SN	Microchip Technology	EEPROM	2Kbit	I2C	400 kHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	ROHS3	1	Active
24LC024-E/SN	Microchip Technology	EEPROM	2Kbit	I2C	400 kHz	8-SOIC	2.5V ~ 5.5V	-40°C ~ 125°C	ROHS3	3	Active
24LC024H-E/SN	Microchip Technology	EEPROM	2Kbit	I2C	1 MHz	8-SOIC	2.5V ~ 5.5V	-40°C ~ 125°C	ROHS3	1	Active
24LC024H-I/SN	Microchip Technology	EEPROM	2Kbit	I2C	1 MHz	8-SOIC	2.5V ~ 5.5V	-40°C ~ 85°C	ROHS3	1	Active
24LC024HT-I/SN	Microchip Technology	EEPROM	2Kbit	I2C	1 MHz	8-SOIC	2.5V ~ 5.5V	-40°C ~ 85°C	ROHS3	1	Active
24LC024T-I/SN	Microchip Technology	EEPROM	2Kbit	I2C	400 kHz	8-SOIC	2.5V ~ 5.5V	-40°C ~ 85°C	ROHS3	3	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment with the AT88SC0204CA-SH-T.

Packaging Considerations:

Parts designated with "-I/SN" suffix in Tube packaging (24AA024-I/SN, 24AA02H-I/SN, 24LC024-E/SN, 24LC024H-E/SN, 24LC024H-I/SN) provide alternative packaging formats while maintaining identical electrical specifications.

Parts designated with "-T-I/SN" or "-T" suffix in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® packaging (24AA024T-I/SN, 24AA025T-I/SN, 24AA02T-I/SN, 24LC024HT-I/SN, 24LC024T-I/SN) support high-volume production environments.

Moisture Sensitivity Level (MSL) Alignment:

Parts with MSL 1 (Unlimited) provide superior moisture tolerance for extended storage and humid environment applications. Parts with MSL 3 (168 Hours) match the original AT88SC0204CA-SH-T specification and require standard moisture control protocols.

Voltage Supply Range:

24AA024 series (24AA024-I/SN, 24AA024T-I/SN, 24AA025T-I/SN, 24AA02H-I/SN, 24AA02T-I/SN) support 1.7V ~ 5.5V supply range, matching the original part exactly.

24LC024 series (24LC024-E/SN, 24LC024H-E/SN, 24LC024H-I/SN, 24LC024HT-I/SN, 24LC024T-I/SN) support 2.5V ~ 5.5V supply range, requiring minimum 2.5V supply voltage.

Clock Frequency Performance:

Standard 400 kHz I2C operation: 24AA024-I/SN, 24AA024T-I/SN, 24AA025T-I/SN, 24AA02H-I/SN, 24AA02T-I/SN, 24LC024-E/SN, 24LC024T-I/SN

Enhanced 1 MHz I2C operation: 24LC024H-E/SN, 24LC024H-I/SN, 24LC024HT-I/SN

Operating Temperature Range:

Extended temperature support (-40°C ~ 125°C): 24LC024-E/SN, 24LC024H-E/SN

Standard temperature support (-40°C ~ 85°C): All remaining substitute parts

Frequently Asked Questions (FAQ)

Q: Can 24AA024-I/SN directly replace AT88SC0204CA-SH-T in existing circuit designs?

A: 24AA024-I/SN meets all primary substitution criteria: 8-SOIC package, 2Kbit memory, 256 x 8 organization, I2C interface, 1.7V ~ 5.5V supply range, -40°C ~ 85°C operating temperature, and ROHS3 compliance. Electrical and mechanical compatibility is confirmed. Packaging format differs (Tube vs. Cut Tape & Digi-Reel®), requiring adjustment to procurement and assembly processes.

Q: What is the difference between 24AA024T-I/SN and 24AA024-I/SN?

A: Both parts share identical electrical specifications: 2Kbit EEPROM, I2C 400 kHz, 1.7V ~ 5.5V supply, -40°C ~ 85°C operation. The primary difference is packaging format: 24AA024-I/SN is supplied in Tube packaging, while 24AA024T-I/SN is supplied in Tape & Reel (TR) format. MSL rating differs: 24AA024-I/SN has MSL 1 (Unlimited), while 24AA024T-I/SN has MSL 3 (168 Hours).

Q: Why do 24LC024 series parts specify 2.5V minimum supply voltage instead of 1.7V?

A: 24LC024 series parts are rated for 2.5V ~ 5.5V supply range, establishing a higher minimum voltage threshold than 24AA024 series (1.7V ~ 5.5V). Circuit designs operating below 2.5V must use 24AA024 series alternatives to maintain specified performance.

Q: What is the significance of MSL (Moisture Sensitivity Level) ratings?

A: MSL 1 (Unlimited) indicates no moisture sensitivity restrictions; parts can be stored indefinitely without desiccant protection. MSL 3 (168 Hours) requires desiccant storage and limits exposure to ambient humidity to 168 hours after package opening. Selection depends on manufacturing environment and storage protocols.

Q: Are 24LC024H series parts (1 MHz clock frequency) compatible with 400 kHz I2C bus designs?

A: Yes. 24LC024H series parts support 1 MHz I2C operation but are backward compatible with 400 kHz I2C bus designs. The I2C interface operates at the lower clock frequency when connected to 400 kHz bus systems. No circuit modification is required.

Q: What packaging formats are available for high-volume production?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats support automated assembly processes. Parts with "-T" designation (24AA024T-I/SN, 24AA025T-I/SN, 24AA02T-I/SN, 24LC024HT-I/SN, 24LC024T-I/SN) are supplied in these formats. Tube packaging (24AA024-I/SN, 24AA02H-I/SN, 24LC024-E/SN, 24LC024H-E/SN, 24LC024H-I/SN) is suitable for lower-volume or manual assembly applications.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the AT88SC0204CA-SH-T regulatory status. REACH Unaffected status is consistent across all parts.

Q: What is the write cycle time specification for substitute parts?

A: All substitute parts specify 5ms write cycle time for word and page operations, matching the AT88SC0204CA-SH-T performance characteristic.

Q: Can 24LC024-E/SN operate at -40°C to 125°C temperature range?

A: Yes. 24LC024-E/SN is rated for -40°C ~ 125°C operating temperature, exceeding the standard -40°C ~ 85°C range of the original part. This extended temperature capability is available in 24LC024-E/SN and 24LC024H-E/SN variants.

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