AT17C128-10PI Equivalent & Substitute Parts

Part Overview

The AT17C128-10PI is a Serial EEPROM memory integrated circuit manufactured by Microchip Technology, featuring 128Kb storage capacity in an 8-DIP through-hole package. This device is classified as obsolete, which necessitates identification of functionally compatible alternatives for ongoing system support and new designs. The part operates within a 4.5V to 5.5V supply voltage range and supports operating temperatures from -40°C to 85°C. Due to its obsolete status and non-compliance with current RoHS standards, equivalent substitutes with active product status are required for continued component availability.

Substiute Parts

AT17C128-10PI

Microchip TechnologyIn Stock: 1905AT17C128-10PI Datasheet

Current PartRFQ

AT17LV256-10PU

Microchip TechnologyIn Stock: 1607AT17LV256-10PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT17C128-10PI is based on the following critical parameters:

• Package Compatibility: Both the main part and substitute maintain the 8-DIP (0.300", 7.62mm) through-hole form factor, ensuring mechanical and electrical pin compatibility on existing PCBs.
• Device Type: Both are Serial EEPROM devices, maintaining functional equivalence in application context.
• Operating Temperature Range: The substitute supports the identical -40°C to 85°C operating temperature specification.
• Supply Voltage Compatibility: The substitute supports the 4.5V ~ 5.5V range required by the original design, with additional support for 3V ~ 3.6V operation.
• Product Status and Compliance: The substitute is active and RoHS3 compliant, addressing the obsolescence and compliance limitations of the original part.

The AT17LV256-10PU is designated as the manufacturer-recommended substitute, offering increased memory capacity (256Kb) while maintaining full electrical and mechanical compatibility with the AT17C128-10PI pinout and package specifications.

Parameter Comparison

Engineering Selection Recommendations

The AT17LV256-10PU is the appropriate substitute for the AT17C128-10PI based on the following engineering criteria:

• Active Product Status: The AT17LV256-10PU maintains active product status with current manufacturing support, eliminating supply chain risk associated with the obsolete AT17C128-10PI.
• Regulatory Compliance: The substitute achieves ROHS3 compliance, meeting current environmental and regulatory requirements that the original part does not satisfy.
• Electrical Compatibility: The substitute supports the full 4.5V ~ 5.5V supply voltage range of the original design, with additional low-voltage operation capability (3V ~ 3.6V) for enhanced design flexibility.
• Mechanical Compatibility: Identical 8-DIP package and pinout ensure direct replacement without PCB modifications.
• Temperature Range Equivalence: Matching -40°C to 85°C operating temperature specification maintains thermal performance parity.

Frequently Asked Questions (FAQ)

Q: Can the AT17LV256-10PU be used as a direct replacement for the AT17C128-10PI?

A: Yes. Both devices share identical 8-DIP package geometry, pinout configuration, and operating temperature range. The substitute is electrically compatible with the 4.5V ~ 5.5V supply voltage requirement of the original design.

Q: What is the primary difference between these two parts?

A: The AT17LV256-10PU provides double the memory capacity (256Kb versus 128Kb) and supports dual voltage operation (3V ~ 3.6V and 4.5V ~ 5.5V). The original AT17C128-10PI operates only at 4.5V ~ 5.5V.

Q: Are there any design considerations when substituting the AT17LV256-10PU?

A: The substitute's increased memory capacity and dual-voltage capability do not introduce compatibility issues. The identical package and pinout ensure mechanical fit on existing PCBs. Firmware or software may require updates to address the increased addressable memory space if the application utilizes the full device capacity.

Q: Why is the AT17C128-10PI classified as obsolete?

A: The part has reached end-of-life status with Microchip Technology. The AT17LV256-10PU represents the current-generation equivalent with active manufacturing support.

Q: Does the substitute meet current regulatory requirements?

A: Yes. The AT17LV256-10PU is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards that the obsolete AT17C128-10PI does not satisfy.