AT88SC25616C-PU Equivalent & Substitute Parts

Part Overview

The AT88SC25616C-PU is a Secure Memory IC manufactured by Microchip Technology in the CryptoMemory® series. This 8-DIP through-hole component provides 256Kbit secure memory functionality for embedded and smart card applications. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility while offering current product availability and support.

Substiute Parts

AT88SC25616C-PU

Microchip TechnologyIn Stock: 780AT88SC25616C-PU Datasheet

Current PartRFQ

24AA256-E/P

Microchip TechnologyIn Stock: 121424AA256-E/P Datasheet

MFR RecommendedRFQ

24AA256-I/P

Microchip TechnologyIn Stock: 2011724AA256-I/P Datasheet

MFR RecommendedRFQ

24AA256UID-I/P

Microchip TechnologyIn Stock: 127224AA256UID-I/P Datasheet

MFR RecommendedRFQ

24FC256-I/P

Microchip TechnologyIn Stock: 449924FC256-I/P Datasheet

MFR RecommendedRFQ

24LC256-E/P

Microchip TechnologyIn Stock: 269224LC256-E/P Datasheet

MFR RecommendedRFQ

24LC256-I/P

Microchip TechnologyIn Stock: 448724LC256-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT88SC25616C-PU is determined by the following critical parameters:

Memory Capacity: All substitute parts maintain 256Kbit capacity with 32K x 8 organization, ensuring data storage equivalence.

Package Compatibility: All substitutes use 8-DIP (0.300", 7.62mm) through-hole packaging, enabling direct PCB footprint compatibility without layout modifications.

Interface Standard: Substitute parts utilize I2C serial interface, providing functional communication compatibility with existing system designs.

Electrical Specifications: Supply voltage ranges and operating temperature specifications determine application suitability across different operating environments.

Product Status: Active substitute parts ensure ongoing availability, manufacturing support, and compliance with current regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes for Extended Temperature Range (-40°C to 125°C):

24AA256-E/P and 24LC256-E/P are suitable for applications requiring the full extended temperature operating range. Both parts maintain ROHS3 compliance and unlimited MSL rating. The 24AA256-E/P offers wider supply voltage tolerance (1.7V ~ 5.5V), while 24LC256-E/P operates from 2.5V ~ 5.5V.

Primary Substitutes for Standard Temperature Range (-40°C to 85°C):

24AA256-I/P, 24AA256UID-I/P, 24FC256-I/P, and 24LC256-I/P are active products with standard industrial temperature specifications. The 24AA256-I/P offers the highest inventory availability (20100 Pcs) with verified programmability status. The 24FC256-I/P provides enhanced clock frequency (1 MHz) and faster access time (400 ns) compared to 400 kHz alternatives.

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, matching the original part's regulatory profile. All parts carry MSL rating 1 (unlimited moisture sensitivity).

Frequently Asked Questions (FAQ)

Q: Can the AT88SC25616C-PU be directly replaced with any of the listed substitutes?

A: Direct replacement depends on application requirements. All substitutes share identical 8-DIP package footprint and 256Kbit memory capacity. However, the original AT88SC25616C-PU is a secure memory device, while substitutes are standard EEPROM devices. Functional compatibility requires that the application does not depend on security-specific features of the CryptoMemory® architecture.

Q: What is the primary difference between 24AA256 and 24LC256 series?

A: The 24LC256 series specifies a minimum supply voltage of 2.5V, while 24AA256 series operates from 1.7V. The 24AA256 series provides broader voltage compatibility for low-power applications. Both series maintain identical memory capacity, I2C interface, and package specifications.

Q: Why does 24FC256-I/P have different electrical characteristics?

A: The 24FC256-I/P operates at 1 MHz clock frequency with 400 ns access time, compared to 400 kHz and 900 ns for standard variants. This higher-speed variant is suitable for applications requiring faster data access, while maintaining identical memory capacity and package form factor.

Q: Are there inventory considerations for part selection?

A: Yes. The 24AA256-I/P has the highest inventory availability at 20100 Pcs. The 24FC256-I/P provides 4400 Pcs, while 24LC256-I/P also offers 4400 Pcs. Lower-inventory alternatives include 24AA256-E/P (1155 Pcs), 24AA256UID-I/P (1168 Pcs), and 24LC256-E/P (2624 Pcs).

Q: What temperature range should I select for my application?

A: Applications operating across the full -40°C to 125°C range require 24AA256-E/P or 24LC256-E/P. Standard industrial applications operating within -40°C to 85°C can utilize 24AA256-I/P, 24AA256UID-I/P, 24FC256-I/P, or 24LC256-I/P.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL rating 1 (unlimited), matching the original AT88SC25616C-PU specifications.