AT88SC0104CA-PU Equivalent & Substitute Parts

Part Overview

The AT88SC0104CA-PU is a Secure Memory IC manufactured by Microchip Technology, classified as CryptoMemory® technology in an 8-DIP through-hole package. This component is designed for embedded and smart card applications requiring secure memory functionality. The part is currently obsolete, necessitating identification of functionally compatible alternatives from Microchip's active product portfolio. Substitute parts must maintain electrical compatibility, identical packaging, and equivalent memory interface characteristics to ensure direct replacement capability in legacy designs.

Substiute Parts

AT88SC0104CA-PU

Microchip TechnologyIn Stock: 991AT88SC0104CA-PU Datasheet

Current PartRFQ

24AA01-I/P

Microchip TechnologyIn Stock: 251224AA01-I/P Datasheet

MFR RecommendedRFQ

24AA014-I/P

Microchip TechnologyIn Stock: 105724AA014-I/P Datasheet

MFR RecommendedRFQ

24AA014H-I/P

Microchip TechnologyIn Stock: 233124AA014H-I/P Datasheet

MFR RecommendedRFQ

24AA01H-I/P

Microchip TechnologyIn Stock: 105424AA01H-I/P Datasheet

MFR RecommendedRFQ

24LC014-E/P

Microchip TechnologyIn Stock: 73924LC014-E/P Datasheet

MFR RecommendedRFQ

24LC014-I/P

Microchip TechnologyIn Stock: 212424LC014-I/P Datasheet

MFR RecommendedRFQ

24LC014H-E/P

Microchip TechnologyIn Stock: 92124LC014H-E/P Datasheet

MFR RecommendedRFQ

24LC014H-I/P

Microchip TechnologyIn Stock: 87024LC014H-I/P Datasheet

MFR RecommendedRFQ

24LC01B-E/P

Microchip TechnologyIn Stock: 116324LC01B-E/P Datasheet

MFR RecommendedRFQ

24LC01B-I/P

Microchip TechnologyIn Stock: 1031124LC01B-I/P Datasheet

MFR RecommendedRFQ

24LC01BH-E/P

Microchip TechnologyIn Stock: 94924LC01BH-E/P Datasheet

MFR RecommendedRFQ

24LC01BH-I/P

Microchip TechnologyIn Stock: 100524LC01BH-I/P Datasheet

MFR RecommendedRFQ

24LC21-I/P

Microchip TechnologyIn Stock: 70024LC21-I/P Datasheet

MFR RecommendedRFQ

24LC21A-I/P

Microchip TechnologyIn Stock: 114724LC21A-I/P Datasheet

MFR RecommendedRFQ

24LCS21A-I/P

Microchip TechnologyIn Stock: 105824LCS21A-I/P Datasheet

MFR RecommendedRFQ

AT88SC0104CA-SH

Microchip TechnologyIn Stock: 67927AT88SC0104CA-SH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT88SC0104CA-PU are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Mechanical Compatibility:

• Package type: 8-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Pin count and footprint equivalence

Electrical Compatibility:

• Memory interface: I2C protocol
• Memory organization: 128 x 8 (1Kbit total)
• Supply voltage range: Minimum 1.7V to 5.5V
• Operating temperature: Minimum -40°C to 85°C
• Write cycle time: 5ms
• RoHS3 compliance and REACH unaffected status

Regulatory Compliance:

• ROHS3 Compliant
• REACH Unaffected
• ECCN and HTSUS classifications

The substitute parts listed are all Microchip Technology EEPROM memory ICs that meet or exceed these parameters. All substitutes are in active product status with verified inventory availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The 24LC01B-I/P and 24AA01-I/P represent the most direct substitutes for the AT88SC0104CA-PU. Both parts maintain identical 8-DIP packaging, I2C interface protocol, 1Kbit memory organization, and 400 kHz clock frequency. Both are in active product status with ROHS3 compliance and REACH unaffected designation. The 24LC01B-I/P offers extended operating temperature range (-40°C to 125°C) compared to the original part's -40°C to 85°C specification, providing enhanced thermal margin for industrial applications.

Secondary Substitutes (Extended Performance):

The 24LC014H-I/P and 24LC014H-E/P variants provide 1 MHz clock frequency operation with 400 ns access time, delivering superior performance characteristics while maintaining identical packaging and I2C interface. These parts support the same 1Kbit memory capacity and are suitable for applications requiring faster data access. The -E/P suffix variants extend operating temperature to -40°C to 125°C.

Compatibility Considerations:

All listed substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence. The 24AA-series parts (24AA01-I/P, 24AA014-I/P, 24AA014H-I/P, 24AA01H-I/P) support the full 1.7V to 5.5V supply voltage range matching the original part. The 24LC-series parts operate at 2.5V minimum supply voltage, which is acceptable for most applications but should be verified if sub-2.5V operation is required.

Frequently Asked Questions (FAQ)

Q: Can the 24LC01B-I/P directly replace the AT88SC0104CA-PU in existing PCB designs?

A: Yes. Both parts use identical 8-DIP through-hole packaging with the same 0.300" (7.62mm) body width and pin spacing. The I2C interface, memory organization (128 x 8), and write cycle time (5ms) are equivalent. No PCB modifications are required.

Q: What is the difference between 24AA01-I/P and 24LC01B-I/P?

A: The primary differences are supply voltage range and operating temperature. The 24AA01-I/P operates from 1.7V to 5.5V and -40°C to 85°C. The 24LC01B-I/P operates from 2.5V to 5.5V and -40°C to 85°C. Both have identical memory capacity, interface, and package. Select 24AA01-I/P if sub-2.5V operation is required.

Q: Why do some substitute parts have different access times (900 ns vs. 3500 ns)?

A: Access time represents the delay from address input to data output availability. Faster access times (400 ns, 900 ns) indicate superior performance but do not affect functional compatibility. The original AT88SC0104CA-PU does not specify access time in the provided parameters. All listed substitutes meet the 5ms write cycle time requirement.

Q: Are the 24LC014H variants suitable replacements?

A: Yes, the 24LC014H-I/P and 24LC014H-E/P are functionally compatible. These parts operate at 1 MHz clock frequency with 400 ns access time, providing enhanced performance. They maintain identical 8-DIP packaging and 1Kbit memory organization. The higher clock frequency is backward compatible with 400 kHz I2C bus operation.

Q: What does the suffix "-I/P" versus "-E/P" indicate?

A: The suffix indicates operating temperature range. "-I/P" denotes industrial temperature range (-40°C to 85°C). "-E/P" denotes extended temperature range (-40°C to 125°C). Both are functionally equivalent; select based on application temperature requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original AT88SC0104CA-PU.

Q: Can I use 24LC014-I/P instead of 24LC014H-I/P?

A: Yes. Both parts are functionally compatible with identical 8-DIP packaging and 1Kbit memory. The 24LC014-I/P operates at 400 kHz with 900 ns access time. The 24LC014H-I/P operates at 1 MHz with 400 ns access time. Select based on required clock frequency and access time performance.