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AT88SC0104CA-SU Equivalent & Substitute Parts
Part Overview
The AT88SC0104CA-SU is a Secure Memory IC manufactured by Microchip Technology, classified as part of the CryptoMemory® series. This 8-SOIC surface-mount component provides 1Kbit secure memory functionality for embedded and smart card applications. The product is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Technology |
| Part Number | AT88SC0104CA-SU |
| Product Type | Secure Memory IC |
| Memory Size | 1Kbit |
| Memory Organization | 128 x 8 |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| HTSUS Code | 8542.32.0051 |
Substitute Part Grouping Explanation
Substitution of the AT88SC0104CA-SU is determined by the following critical parameters:
Primary Compatibility Criteria:
- Package / Case: 8-SOIC (0.154", 3.90mm Width) — mechanical and electrical footprint compatibility
- Memory Size: 1Kbit — functional capacity requirement
- Memory Organization: 128 x 8 — address and data line configuration
- Mounting Type: Surface Mount — assembly process compatibility
- RoHS Status: ROHS3 Compliant — regulatory compliance requirement
- Moisture Sensitivity Level: 1 (Unlimited) — storage and handling compatibility
- REACH Status: REACH Unaffected — environmental compliance
Secondary Compatibility Criteria:
- Memory Interface: I2C protocol support
- Voltage Supply Range: compatibility with system power requirements
- Operating Temperature Range: suitability for application environment
- Product Status: Active status preferred for long-term availability
The substitute parts listed are Microchip Technology EEPROM memory ICs that share identical package specifications, memory capacity, and organization with the AT88SC0104CA-SU. These parts maintain full compliance with RoHS3 and REACH regulations and are currently in active production status.
Parameter Comparison
| Part Number | Manufacturer | Memory Type | Memory Size | Memory Organization | Memory Interface | Clock Frequency | Package / Case | Voltage Supply | Operating Temperature | Product Status | RoHS Status | MSL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT88SC0104CA-SU | Microchip Technology | Secure Memory | 1Kbit | 128 x 8 | Proprietary | N/A | 8-SOIC (0.154", 3.90mm) | N/A | N/A | Obsolete | ROHS3 Compliant | 1 (Unlimited) |
| 24AA01-I/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 400 kHz | 8-SOIC (0.154", 3.90mm) | 1.7V ~ 5.5V | -40°C ~ 85°C | Active | ROHS3 Compliant | 1 (Unlimited) |
| 24AA014-I/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 400 kHz | 8-SOIC (0.154", 3.90mm) | 1.7V ~ 5.5V | -40°C ~ 85°C | Active | ROHS3 Compliant | 1 (Unlimited) |
| 24AA014H-I/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 400 kHz | 8-SOIC (0.154", 3.90mm) | 1.7V ~ 5.5V | -40°C ~ 85°C | Active | ROHS3 Compliant | 1 (Unlimited) |
| 24AA01H-I/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 400 kHz | 8-SOIC (0.154", 3.90mm) | 1.7V ~ 5.5V | -40°C ~ 85°C | Active | ROHS3 Compliant | 1 (Unlimited) |
| 24LC014-E/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 400 kHz | 8-SOIC (0.154", 3.90mm) | 2.5V ~ 5.5V | -40°C ~ 125°C | Active | ROHS3 Compliant | 1 (Unlimited) |
| 24LC014-I/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 400 kHz | 8-SOIC (0.154", 3.90mm) | 2.5V ~ 5.5V | -40°C ~ 85°C | Active | ROHS3 Compliant | 3 (168 Hours) |
| 24LC014H-E/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 1 MHz | 8-SOIC (0.154", 3.90mm) | 2.5V ~ 5.5V | -40°C ~ 125°C | Active | ROHS3 Compliant | 1 (Unlimited) |
| 24LC014H-I/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 1 MHz | 8-SOIC (0.154", 3.90mm) | 2.5V ~ 5.5V | -40°C ~ 85°C | Active | ROHS3 Compliant | 1 (Unlimited) |
| 24LC01B-E/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 400 kHz | 8-SOIC (0.154", 3.90mm) | 2.5V ~ 5.5V | -40°C ~ 125°C | Active | ROHS3 Compliant | 1 (Unlimited) |
| 24LC01B-I/SN | Microchip Technology | EEPROM | 1Kbit | 128 x 8 | I2C | 400 kHz | 8-SOIC (0.154", 3.90mm) | 2.5V ~ 5.5V | -40°C ~ 85°C | Active | ROHS3 Compliant | 1 (Unlimited) |
Engineering Selection Recommendations
Product Status Consideration: The AT88SC0104CA-SU is classified as obsolete. All listed substitute parts maintain active product status with Microchip Technology, ensuring long-term availability, continued manufacturing support, and access to technical documentation.
Compliance and Certification: All substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory compliance profile of the original part. This ensures compatibility with current environmental and safety standards for electronic component manufacturing and assembly.
Programmable Verification Status: The 24AA01-I/SN and 24LC014-I/SN variants are verified as programmable through DiGi-Electronics, providing documented compatibility with standard programming equipment and procedures.
Moisture Sensitivity Alignment: Most substitute parts maintain MSL 1 (Unlimited) rating, identical to the original AT88SC0104CA-SU. The 24LC014-I/SN variant specifies MSL 3 (168 Hours), which requires controlled storage conditions but remains suitable for standard manufacturing environments.
Temperature Range Selection: For applications requiring extended operating temperature ranges, the 24LC014-E/SN and 24LC01B-E/SN variants support -40°C to 125°C operation, compared to the standard -40°C to 85°C range of other alternatives.
Clock Frequency Variants: The 24LC014H-E/SN and 24LC014H-I/SN parts operate at 1 MHz clock frequency, providing faster I2C communication compared to the 400 kHz standard variants. Selection depends on system timing requirements.
Frequently Asked Questions (FAQ)
Q: Why is the AT88SC0104CA-SU obsolete, and what are the implications?
A: The AT88SC0104CA-SU has reached end-of-life status with Microchip Technology. Obsolescence means no new manufacturing occurs, existing inventory is limited, and technical support may be discontinued. Substitution with active-status parts ensures design continuity and long-term supply chain reliability.
Q: Are the substitute parts pin-compatible with the AT88SC0104CA-SU?
A: All substitute parts share the identical 8-SOIC package specification (0.154", 3.90mm Width), ensuring mechanical and electrical footprint compatibility. Pin assignments for I2C interface (SDA, SCL, VCC, GND) are standard across Microchip EEPROM memory ICs, supporting direct PCB-level substitution.
Q: What is the functional difference between the AT88SC0104CA-SU and the 24AA01-I/SN?
A: The AT88SC0104CA-SU is a secure memory device with proprietary encryption features, while the 24AA01-I/SN is a standard EEPROM with I2C interface. Both provide 1Kbit storage in identical packages. Applications requiring cryptographic functionality must evaluate whether standard EEPROM storage is functionally sufficient.
Q: Which substitute part offers the best long-term availability?
A: The 24LC01B-I/SN maintains the highest inventory level (33,300 pcs) among listed substitutes and is actively produced by Microchip Technology. This part is recommended for new designs requiring maximum supply chain assurance.
Q: Do all substitute parts support the same voltage supply range?
A: No. The 24AA01-I/SN, 24AA014-I/SN, 24AA014H-I/SN, and 24AA01H-I/SN support 1.7V to 5.5V operation. The 24LC series parts (24LC014-E/SN, 24LC014-I/SN, 24LC014H-E/SN, 24LC014H-I/SN, 24LC01B-E/SN, 24LC01B-I/SN) support 2.5V to 5.5V operation. System power supply specifications determine which variants are suitable.
Q: What is the significance of the temperature grade suffix (E vs. I)?
A: The "E" suffix indicates extended temperature range operation (-40°C to 125°C), while the "I" suffix indicates industrial temperature range (-40°C to 85°C). Selection depends on the application's operating environment. Extended-range parts are suitable for automotive and industrial applications; industrial-range parts are standard for consumer and commercial applications.
Q: Are there differences in write cycle time among the substitute parts?
A: All listed substitute parts specify a 5ms write cycle time for word and page operations. This parameter is consistent across all variants and does not differentiate substitution suitability.
Q: What does MSL 3 (168 Hours) mean for the 24LC014-I/SN?
A: MSL 3 indicates that the component can absorb moisture for up to 168 hours (7 days) at specified humidity levels before soldering. This requires controlled storage in dry-pack conditions and limits the time between package opening and assembly. MSL 1 (Unlimited) parts have no such restriction and are preferred for flexible manufacturing schedules.
Q: Can I use the 24LC014H variants for faster I2C communication?
A: Yes. The 24LC014H-E/SN and 24LC014H-I/SN operate at 1 MHz clock frequency compared to 400 kHz for standard variants. These parts support faster data transfer rates and reduced access times (400 ns vs. 900 ns). Use these variants only if the system I2C bus and firmware support 1 MHz operation.
Q: Are all substitute parts verified as programmable?
A: The 24AA01-I/SN and 24LC014-I/SN are verified as programmable through DiGi-Electronics. Other variants are not verified but are standard Microchip products with documented programming procedures. Verification status indicates tested compatibility with specific programming equipment.
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