AT88SC0808CA-PU Equivalent & Substitute Parts

Part Overview

The AT88SC0808CA-PU is a Secure Memory IC manufactured by Microchip Technology, part of the CryptoMemory® series. This 8-PDIP through-hole component provides 8Kbit secure memory functionality for embedded and smart card applications. The product is classified as Obsolete, necessitating identification of functionally compatible alternatives for ongoing design requirements and production continuity.

Substiute Parts

AT88SC0808CA-PU

Microchip TechnologyIn Stock: 861AT88SC0808CA-PU Datasheet

Current PartRFQ

AT24C08D-PUM

Microchip TechnologyIn Stock: 3115AT24C08D-PUM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT88SC0808CA-PU is based on the following critical parameters:

Package Compatibility: Both the main part and substitute maintain identical physical packaging—8-DIP (0.300", 7.62mm)—ensuring direct PCB footprint compatibility without layout modifications.

Mounting Technology: Through-hole mounting is preserved across all alternatives, maintaining compatibility with existing assembly processes.

Memory Capacity: The 8Kbit memory size is maintained, ensuring equivalent data storage capability.

Manufacturer Continuity: Microchip Technology remains the manufacturer for substitute parts, ensuring consistent quality standards and supply chain reliability.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements.

Moisture Sensitivity: MSL rating of 1 (Unlimited) is consistent across alternatives, indicating no special moisture handling requirements.

The AT24C08D-PUM serves as the primary substitute, offering equivalent memory capacity and identical physical form factor while maintaining active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: AT24C08D-PUM

The AT24C08D-PUM is the designated substitute for the obsolete AT88SC0808CA-PU. Selection is based on the following engineering criteria:

Product Status Transition: The AT24C08D-PUM maintains Active product status, ensuring long-term availability and continued manufacturer support. This addresses the obsolescence of the original part.

Physical Compatibility: Identical 8-DIP package dimensions and through-hole mounting eliminate PCB redesign requirements, reducing implementation risk and cost.

Regulatory Alignment: Both ROHS3 compliance and REACH Unaffected status are maintained, ensuring continued compliance with current environmental regulations.

Manufacturer Consistency: Microchip Technology manufacture ensures consistent quality standards, supply chain reliability, and technical support continuity.

Memory Specification Match: 8Kbit capacity with 1K x 8 organization provides equivalent data storage functionality.

Implementation of the AT24C08D-PUM requires verification of interface protocol compatibility with existing circuit designs, as the substitute operates via I2C interface at 1 MHz clock frequency with specified voltage and temperature operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the AT24C08D-PUM directly replace the AT88SC0808CA-PU without PCB modifications?

A: Yes. Both components utilize identical 8-DIP (0.300", 7.62mm) packaging with through-hole mounting, ensuring direct footprint compatibility. No PCB layout changes are required.

Q: What is the primary reason for substitution?

A: The AT88SC0808CA-PU is classified as Obsolete. The AT24C08D-PUM provides equivalent 8Kbit memory capacity while maintaining Active product status for continued availability.

Q: Are regulatory compliance standards maintained with the substitute?

A: Yes. The AT24C08D-PUM maintains ROHS3 compliance and REACH Unaffected status, identical to the original part.

Q: What are the operating voltage and temperature specifications for the substitute?

A: The AT24C08D-PUM operates at supply voltages from 1.7V to 3.6V across an operating temperature range of -40°C to 85°C (TC).

Q: What interface protocol does the substitute use?

A: The AT24C08D-PUM operates via I2C interface at 1 MHz clock frequency with 4.5 µs access time and 5ms write cycle time.

Q: Is moisture sensitivity handling different between the original and substitute?

A: No. Both components maintain MSL rating of 1 (Unlimited), indicating identical moisture sensitivity characteristics and handling requirements.

Q: What is the memory organization of the substitute?

A: The AT24C08D-PUM is organized as 1K x 8, providing 8Kbit total capacity equivalent to the original part.