AT17C128-10CI Equivalent & Substitute Parts

Part Overview

The AT17C128-10CI is a Serial EEPROM memory integrated circuit manufactured by Microchip Technology with 128kb storage capacity. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and production continuity. The part operates within a 4.5V to 5.5V supply voltage range and is housed in an 8-TDFN surface mount package.

Substiute Parts

AT17C128-10CI

Microchip TechnologyIn Stock: 1034AT17C128-10CI Datasheet

Current PartRFQ

AT17LV128-10CI

Microchip TechnologyIn Stock: 2557AT17LV128-10CI Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT17LV128-10CI qualifies as a direct substitute based on the following alignment of critical parameters:

• Memory Type & Capacity: Both parts are Serial EEPROM devices with identical 128kb memory size
• Package & Mounting: Both use 8-TDFN surface mount packaging with 8-LAP (6x6) supplier device package
• Operating Temperature Range: Both support -40°C to 85°C operating conditions
• Moisture Sensitivity: Both rated at MSL 3 (168 Hours)
• Regulatory Compliance: Both share identical RoHS non-compliant, REACH Unaffected, and EAR99 ECCN status

The AT17LV128-10CI extends voltage supply compatibility to include 3V to 3.6V operation in addition to the 4.5V to 5.5V range, providing broader application flexibility while maintaining full compatibility with 5V-only designs.

Parameter Comparison

Engineering Selection Recommendations

The AT17LV128-10CI is the appropriate substitute for the obsolete AT17C128-10CI. Selection is based on:

• Product Status: The AT17LV128-10CI maintains active production status, ensuring long-term availability and supply chain continuity
• Functional Equivalence: Identical memory capacity, package form factor, and thermal operating range ensure direct replacement capability
• Compliance Alignment: Both parts share identical regulatory classifications (RoHS non-compliant, REACH Unaffected, EAR99)
• Enhanced Voltage Flexibility: The substitute part supports dual voltage operation (3V and 5V domains) without compromising 5V-only circuit compatibility

For designs currently using AT17C128-10CI, transition to AT17LV128-10CI requires no circuit modifications when operating within the 4.5V to 5.5V supply range.

Frequently Asked Questions (FAQ)

Q: Can AT17LV128-10CI directly replace AT17C128-10CI in existing designs?

A: Yes. Both parts share identical memory capacity (128kb), package type (8-TDFN), pin configuration (8-LAP), and operating temperature range (-40°C to 85°C). Direct substitution is valid for circuits operating within the 4.5V to 5.5V supply voltage range.

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

A: The AT17LV128-10CI supports extended voltage operation at 3V to 3.6V in addition to the standard 4.5V to 5.5V range. This provides compatibility with low-voltage applications while maintaining full backward compatibility with 5V designs.

Q: Are there any package or pinout differences?

A: No. Both parts use identical 8-TDFN surface mount packaging with 8-LAP (6x6) supplier device package specifications. Pinout and footprint are identical.

Q: What is the significance of the obsolete status for AT17C128-10CI?

A: Obsolete status indicates that Microchip Technology has discontinued production. The AT17LV128-10CI, with active production status, ensures continued availability for new designs and production requirements.

Q: Do both parts have the same moisture sensitivity requirements?

A: Yes. Both parts are rated at Moisture Sensitivity Level 3 (168 Hours), requiring identical handling and storage protocols.

Q: Are there compliance differences between the two parts?

A: No. Both parts share identical RoHS non-compliant, REACH Unaffected, and EAR99 ECCN classifications.