AT17N256-10SC Equivalent & Substitute Parts

Part Overview

The AT17N256-10SC is a 256Kb Serial EEPROM configuration memory device manufactured by Microchip Technology, housed in a 20-SOIC surface mount package. This part operates within a 3V to 3.6V supply voltage range and supports operating temperatures from 0°C to 70°C. The device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement planning.

Substiute Parts

AT17N256-10SC

Microchip TechnologyIn Stock: 1145AT17N256-10SC Datasheet

Current PartRFQ

AT17LV256-10SU

AtmelIn Stock: 2362AT17LV256-10SU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT17N256-10SC is determined by the following critical parameters:

• Memory Capacity: 256Kb (non-negotiable for functional equivalence)
• Package Type: 20-SOIC form factor (ensures mechanical and electrical compatibility with existing PCB layouts)
• Device Type: Serial EEPROM (maintains protocol and interface compatibility)
• Supply Voltage Range: Must support the 3V to 3.6V operating window of the original design
• Pin Configuration: Identical pinout required for direct socket compatibility

The AT17LV256-10SU qualifies as a direct substitute based on matching memory capacity, package type, device classification, and pin compatibility. This part is manufactured by Atmel and maintains the same 20-SOIC package footprint.

Parameter Comparison

Engineering Selection Recommendations

The AT17LV256-10SU is a qualified substitute for the AT17N256-10SC based on the following factors:

• Functional Equivalence: Both devices provide 256Kb Serial EEPROM memory with identical package and pinout specifications
• Supply Voltage Compatibility: The substitute supports the 3V to 3.6V range required by the original design, with extended capability to 4.5V to 5.5V
• Active Product Status: The AT17LV256-10SU is currently in active production, ensuring long-term availability and supply chain stability
• Regulatory Compliance: Both parts share identical ECCN and HTSUS classifications, maintaining export and trade compliance
• Temperature Range Enhancement: The substitute offers an extended operating temperature range (-40°C to 85°C) compared to the original (0°C to 70°C), providing additional operational margin

Frequently Asked Questions (FAQ)

Q: Can the AT17LV256-10SU be used as a direct replacement for the AT17N256-10SC?

A: Yes. Both devices share identical memory capacity (256Kb), package type (20-SOIC), pinout configuration, and Serial EEPROM protocol. The substitute is pin-compatible and functionally equivalent for applications operating within the 3V to 3.6V supply voltage range.

Q: What are the key differences between these parts?

A: The primary differences are product status and operating specifications. The AT17LV256-10SU is an active product with extended supply voltage support (3V to 3.6V and 4.5V to 5.5V) and a wider operating temperature range (-40°C to 85°C versus 0°C to 70°C). The original AT17N256-10SC is obsolete.

Q: Does the extended temperature range of the substitute affect compatibility?

A: No. Extended temperature range specifications do not impact compatibility. The substitute maintains full functionality within the original design's operating temperature window (0°C to 70°C) while offering additional capability for applications requiring broader temperature operation.

Q: Are there any package or mounting differences?

A: No. Both parts use the identical 20-SOIC (0.295", 7.50mm Width) surface mount package. PCB layouts and assembly processes require no modification.

Q: What is the supply voltage consideration for substitution?

A: The substitute supports both the original 3V to 3.6V range and an extended 4.5V to 5.5V range. For designs operating at 3V to 3.6V, the substitute functions identically to the original part. Designs requiring 4.5V to 5.5V operation can utilize the extended capability of the substitute.