AT88SC0808CA-SH Equivalent & Substitute Parts

Part Overview

The AT88SC0808CA-SH is a Secure Memory IC manufactured by Microchip Technology, classified as CryptoMemory® technology in the 8-SOIC package. This component is designed for embedded and smart card applications requiring secure memory functionality. The part is currently Active in product status with 2214 units in stock.

Substitute parts are necessary when the original AT88SC0808CA-SH is unavailable, when alternative supply chain options are required, or when design flexibility permits the use of functionally equivalent EEPROM memory devices that share identical electrical and mechanical specifications.

Key Parameters

Parameter	AT88SC0808CA-SH
Manufacturer	Microchip Technology
Product Type	Secure Memory
Memory Size	8 Kbit
Memory Organization	1K x 8
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the AT88SC0808CA-SH is based on the following critical parameters that must align across all candidate parts:

Mandatory Matching Parameters:

Memory Size: 8 Kbit
Memory Organization: 1K x 8
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

Interface and Protocol:

Memory Interface: I2C (for EEPROM substitutes)
Memory Format: EEPROM (non-volatile memory)

Environmental Compliance:

Moisture Sensitivity Level: 1 (Unlimited) preferred for maximum reliability
Operating Temperature Range: -40°C to 85°C minimum

The AT88SC0808CA-SH is a secure memory device. Direct functional equivalents include EEPROM memory ICs from Microchip Technology, STMicroelectronics, Rohm Semiconductor, Catalyst Semiconductor, and onsemi that share identical package geometry, memory capacity, and I2C interface specifications.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Memory Format	Interface	Clock Frequency	Package	Voltage Supply	Operating Temp	MSL	RoHS	Product Status
AT88SC0808CA-SH	Microchip	8 Kbit	Secure Memory	Proprietary	N/A	8-SOIC	N/A	N/A	1	ROHS3	Active
AT24C08D-SSHM-B	Microchip	8 Kbit	EEPROM	I2C	1 MHz	8-SOIC	1.7V ~ 3.6V	-40°C ~ 85°C	3	ROHS3	Active
AT24CS08-SSHM-T	Microchip	8 Kbit	EEPROM	I2C	1 MHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	1	ROHS3	Active
BR24G08FJ-3GTE2	Rohm	8 Kbit	EEPROM	I2C	400 kHz	8-SOIC	1.6V ~ 5.5V	-40°C ~ 85°C	1	ROHS3	Active
BR24L08FJ-WE2	Rohm	8 Kbit	EEPROM	I2C	400 kHz	8-SOIC	1.8V ~ 5.5V	-40°C ~ 85°C	1	ROHS3	Active
BR24T08FJ-WE2	Rohm	8 Kbit	EEPROM	I2C	400 kHz	8-SOIC	1.6V ~ 5.5V	-40°C ~ 85°C	1	ROHS3	Active
CAT24C08WI-G	Catalyst	8 Kbit	EEPROM	I2C	400 kHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	3	ROHS3	Active
CAV24C08WE-GT3	onsemi	8 Kbit	EEPROM	I2C	400 kHz	8-SOIC	2.5V ~ 5.5V	-40°C ~ 125°C	1	ROHS3	Active
M24C08-DRMN3TP/K	STMicroelectronics	8 Kbit	EEPROM	I2C	1 MHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 125°C	1	ROHS3	Active
M24C08-DRMN8TP/K	STMicroelectronics	8 Kbit	EEPROM	I2C	1 MHz	8-SOIC	1.8V ~ 5.5V	-40°C ~ 105°C	1	ROHS3	Active
M24C08-FMN6TP	STMicroelectronics	8 Kbit	EEPROM	I2C	400 kHz	8-SOIC	1.7V ~ 5.5V	-40°C ~ 85°C	1	ROHS3	Active

Engineering Selection Recommendations

Primary Substitutes (Microchip Technology):

AT24CS08-SSHM-T is the preferred substitute from Microchip Technology. This part maintains identical memory capacity (8 Kbit, 1K x 8 organization), package geometry (8-SOIC), and compliance certifications (ROHS3, REACH Unaffected). The AT24CS08-SSHM-T offers superior voltage supply range (1.7V ~ 5.5V) and Moisture Sensitivity Level 1 (Unlimited), matching the original part's MSL rating. Product status is Active with 4100 units in stock.

AT24C08D-SSHM-B is an alternative Microchip option with identical package and memory specifications. This part operates at 1 MHz clock frequency with 4.5 µs access time. Moisture Sensitivity Level is rated at 3 (168 Hours), which represents a lower reliability margin compared to the original part. Voltage supply range is restricted to 1.7V ~ 3.6V. Product status is Active with 1880 units in stock.

Secondary Substitutes (STMicroelectronics M24C08 Series):

M24C08-DRMN8TP/K provides 1 MHz clock frequency operation with 450 ns access time. This part carries AEC-Q100 automotive qualification and operates across -40°C to 105°C. Moisture Sensitivity Level is 1 (Unlimited). Voltage supply range is 1.8V ~ 5.5V. Product status is Active with 3823 units in stock.

M24C08-DRMN3TP/K operates at 1 MHz with 450 ns access time and AEC-Q100 automotive qualification. Operating temperature extends to 125°C. Moisture Sensitivity Level is 1 (Unlimited). Voltage supply range is 1.7V ~ 5.5V. Product status is Active with 3639 units in stock.

M24C08-FMN6TP operates at 400 kHz with 900 ns access time. This part is DiGi-Electronics Programmable Verified. Moisture Sensitivity Level is 1 (Unlimited). Voltage supply range is 1.7V ~ 5.5V. Product status is Active with 35300 units in stock.

Tertiary Substitutes (Rohm Semiconductor BR24 Series):

BR24L08FJ-WE2 operates at 400 kHz with Moisture Sensitivity Level 1 (Unlimited). This part is DiGi-Electronics Programmable Verified. Voltage supply range is 1.8V ~ 5.5V. Product status is Active with 4701 units in stock.

BR24T08FJ-WE2 operates at 400 kHz with Moisture Sensitivity Level 1 (Unlimited). Voltage supply range is 1.6V ~ 5.5V. Product status is Active with 7700 units in stock.

BR24G08FJ-3GTE2 operates at 400 kHz with Moisture Sensitivity Level 1 (Unlimited). Voltage supply range is 1.6V ~ 5.5V. Product status is Active with 260275 units in stock.

Quaternary Substitutes (Other Manufacturers):

CAV24C08WE-GT3 (onsemi) carries AEC-Q100 automotive qualification with extended operating temperature range (-40°C to 125°C). Moisture Sensitivity Level is 1 (Unlimited). Voltage supply range is 2.5V ~ 5.5V. Product status is Active with 17200 units in stock.

CAT24C08WI-G (Catalyst Semiconductor) operates at 400 kHz with 900 ns access time. Moisture Sensitivity Level is 3 (168 Hours). Voltage supply range is 1.7V ~ 5.5V. Product status is Active with 4415 units in stock.

Frequently Asked Questions (FAQ)

Q: Can AT24CS08-SSHM-T directly replace AT88SC0808CA-SH?

A: Both parts share identical 8-SOIC package geometry, 8 Kbit memory capacity, and 1K x 8 organization. Both are ROHS3 compliant and REACH Unaffected. The AT24CS08-SSHM-T is an EEPROM device with I2C interface, while the AT88SC0808CA-SH is a Secure Memory device. Functional compatibility depends on application-specific security requirements and protocol implementation.

Q: What is the difference between 400 kHz and 1 MHz clock frequency options?

A: Clock frequency determines I2C bus speed. 1 MHz parts (AT24C08D-SSHM-B, AT24CS08-SSHM-T, M24C08-DRMN series) support faster data transfer rates. 400 kHz parts (BR24 series, CAT24C08WI-G, M24C08-FMN6TP) operate at standard I2C speed. Selection depends on system bus configuration and timing requirements.

Q: Why do some parts have Moisture Sensitivity Level 3 instead of 1?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to moisture before soldering. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) requires controlled storage conditions. For applications with extended inventory holding periods, MSL 1 parts are preferred.

Q: Are automotive-qualified parts (AEC-Q100) necessary for this application?

A: AEC-Q100 qualification indicates automotive-grade reliability testing. Parts such as M24C08-DRMN3TP/K, M24C08-DRMN8TP/K, and CAV24C08WE-GT3 carry this certification. Selection depends on application environment and reliability requirements.

Q: What voltage supply range should I select?

A: The original AT88SC0808CA-SH does not specify voltage supply range. Substitute selection should match system power supply specifications. Parts with wider voltage ranges (1.6V ~ 5.5V or 1.7V ~ 5.5V) offer greater design flexibility. Parts with restricted ranges (1.7V ~ 3.6V) are suitable only for low-voltage applications.

Q: Is package compatibility guaranteed across all listed substitutes?

A: All listed substitutes use 8-SOIC (0.154", 3.90mm Width) package. Physical footprint and pin configuration are identical. PCB layout compatibility is assured. However, some parts specify 8-SOP-J as supplier device package designation, which is mechanically equivalent to 8-SOIC.

Q: Which substitute has the highest inventory availability?

A: BR24G08FJ-3GTE2 has the highest inventory with 260275 units in stock. M24C08-FMN6TP has 35300 units. CAV24C08WE-GT3 has 17200 units. These parts offer immediate availability for high-volume requirements.

Q: Can I use parts with different operating temperature ranges interchangeably?

A: Operating temperature range must match application requirements. Parts rated to -40°C ~ 125°C (M24C08-DRMN3TP/K, CAV24C08WE-GT3) provide extended temperature capability. Parts rated to -40°C ~ 85°C are suitable for standard industrial applications. Selection depends on end-use environment specifications.

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