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AT25080N-10SC-2.7 EEPROM Memory IC Equivalent & Substitute Parts
Part Overview
The AT25080N-10SC-2.7 is an 8Kbit SPI EEPROM memory IC manufactured by Microchip Technology, operating at 3 MHz with a supply voltage range of 2.7V to 5.5V. This device is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and production continuity. The part is housed in an 8-SOIC surface mount package with 1K x 8 memory organization and a 5ms write cycle time.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Memory Size | 8Kbit |
| Memory Organization | 1K x 8 |
| Memory Interface | SPI |
| Clock Frequency | 3 MHz |
| Voltage Supply Range | 2.7V ~ 5.5V |
| Write Cycle Time | 5ms |
| Operating Temperature | 0°C ~ 70°C |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | Non-compliant |
Substitute Part Grouping Explanation
Substitution of the AT25080N-10SC-2.7 is determined by the following critical parameters: memory size (8Kbit), memory organization (1K x 8), SPI interface, package type (8-SOIC), and supply voltage compatibility. The clock frequency and operating temperature range define performance tiers within the 8Kbit SPI EEPROM category.
Substitute parts are grouped into three categories based on clock frequency and voltage supply range:
Category 1: Lower Clock Frequency (1 MHz)
- 25AA080/SN: Operates at 1 MHz with extended supply voltage range (1.8V ~ 5.5V). Active product status with RoHS3 compliance.
Category 2: Matched Clock Frequency (3 MHz)
- 25C080/SN and 25C080T/SN: Direct frequency match at 3 MHz. Supply voltage limited to 4.5V ~ 5.5V. Both active with RoHS3 compliance. Differ only in packaging (Tube vs. Tape & Reel).
Category 3: Higher Clock Frequency (5-10 MHz)
- 25LC080C-E/SN, 25LC080C-H/SN, 25LC080C-I/SN: Operate at 5-10 MHz with supply voltage 2.5V ~ 5.5V. Extended operating temperature ranges (-40°C to 85°C, 125°C, or 150°C). Active products with RoHS3 compliance.
- 25LC080CT-E/SN, 25LC080CT-H/SN, 25LC080CT-I/SN: Tape & Reel packaged variants of the 25LC080C series with identical electrical specifications.
- 25LC080D-E/SN: 10 MHz operation with supply voltage 2.5V ~ 5.5V and extended temperature range (-40°C ~ 125°C). Active product with RoHS3 compliance.
Parameter Comparison
| Part Number | Manufacturer | Memory Size | Clock Frequency | Supply Voltage | Operating Temperature | Write Cycle Time | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| AT25080N-10SC-2.7 | Microchip Technology | 8Kbit | 3 MHz | 2.7V ~ 5.5V | 0°C ~ 70°C | 5ms | 8-SOIC | Obsolete | Non-compliant |
| 25AA080/SN | Microchip Technology | 8Kbit | 1 MHz | 1.8V ~ 5.5V | 0°C ~ 70°C | 5ms | 8-SOIC | Active | RoHS3 Compliant |
| 25C080/SN | Microchip Technology | 8Kbit | 3 MHz | 4.5V ~ 5.5V | 0°C ~ 70°C | 5ms | 8-SOIC | Active | RoHS3 Compliant |
| 25C080T/SN | Microchip Technology | 8Kbit | 3 MHz | 4.5V ~ 5.5V | 0°C ~ 70°C | 5ms | 8-SOIC | Active | RoHS3 Compliant |
| 25LC080C-E/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 5ms | 8-SOIC | Active | RoHS3 Compliant |
| 25LC080C-H/SN | Microchip Technology | 8Kbit | 5 MHz | 2.5V ~ 5.5V | -40°C ~ 150°C | 6ms | 8-SOIC | Active | RoHS3 Compliant |
| 25LC080C-I/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 85°C | 5ms | 8-SOIC | Active | RoHS3 Compliant |
| 25LC080CT-E/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 5ms | 8-SOIC | Active | RoHS3 Compliant |
| 25LC080CT-H/SN | Microchip Technology | 8Kbit | 5 MHz | 2.5V ~ 5.5V | -40°C ~ 150°C | 6ms | 8-SOIC | Active | RoHS3 Compliant |
| 25LC080CT-I/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 85°C | 5ms | 8-SOIC | Active | RoHS3 Compliant |
| 25LC080D-E/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 5ms | 8-SOIC | Active | RoHS3 Compliant |
Engineering Selection Recommendations
Primary Recommendation: 25C080/SN or 25C080T/SN
For applications requiring direct frequency equivalence at 3 MHz with the original AT25080N-10SC-2.7, the 25C080/SN (Tube packaging) or 25C080T/SN (Tape & Reel packaging) are the preferred substitutes. Both parts maintain identical clock frequency, write cycle time, and operating temperature range. The supply voltage range is narrower (4.5V ~ 5.5V vs. 2.7V ~ 5.5V), requiring verification that system supply voltages remain within this specification. Both parts are active products with RoHS3 compliance, addressing regulatory requirements absent in the obsolete original part.
Secondary Recommendation: 25LC080C-I/SN or 25LC080CT-I/SN
For applications tolerating higher clock frequency (10 MHz) with extended low-temperature operation (-40°C), these parts provide superior performance headroom. The 25LC080C-I/SN (Tube) and 25LC080CT-I/SN (Tape & Reel) maintain the same operating temperature upper limit (85°C) as the original part. Supply voltage range extends to 2.5V, providing greater flexibility for low-voltage applications. Both are active products with RoHS3 compliance.
Alternative for Extended Temperature Range: 25LC080C-H/SN or 25LC080CT-H/SN
Applications requiring operation to 150°C should consider the 25LC080C-H/SN (Tube) or 25LC080CT-H/SN (Tape & Reel). These parts operate at 5 MHz with a 6ms write cycle time and support the widest operating temperature range (-40°C ~ 150°C). Supply voltage range is 2.5V ~ 5.5V. Both are active products with RoHS3 compliance.
Lower Frequency Alternative: 25AA080/SN
For applications where 1 MHz operation is acceptable, the 25AA080/SN provides the widest supply voltage range (1.8V ~ 5.5V), enabling operation in ultra-low-voltage systems. This part is active with RoHS3 compliance and maintains the same operating temperature range as the original part (0°C ~ 70°C).
Frequently Asked Questions (FAQ)
Q: Can 25C080/SN directly replace AT25080N-10SC-2.7 in existing designs?
A: The 25C080/SN is electrically compatible at the same 3 MHz clock frequency and 8-SOIC package. However, the supply voltage range is narrower (4.5V ~ 5.5V vs. 2.7V ~ 5.5V). Verify that your system supply voltage remains above 4.5V. If your design operates below 4.5V, select an alternative from the 25LC080 series.
Q: What is the difference between 25C080/SN and 25C080T/SN?
A: Both parts are electrically identical at 3 MHz operation. The difference is packaging: 25C080/SN is supplied in Tube packaging, while 25C080T/SN is supplied in Tape & Reel (TR) format. Select based on your assembly process requirements.
Q: Why do 25LC080 parts have different temperature ranges?
A: The 25LC080 family includes variants optimized for different temperature requirements. The 25LC080C-E/SN and 25LC080CT-E/SN support -40°C ~ 125°C, the 25LC080C-H/SN and 25LC080CT-H/SN support -40°C ~ 150°C, and the 25LC080C-I/SN and 25LC080CT-I/SN support -40°C ~ 85°C. Select the variant matching your application's temperature requirements.
Q: Is the AT25080N-10SC-2.7 truly obsolete?
A: Yes, the AT25080N-10SC-2.7 is classified as obsolete. All recommended substitutes are active products with current manufacturing and availability. Transition to an active part is necessary for long-term supply chain security.
Q: Do all substitute parts have RoHS3 compliance?
A: All recommended substitute parts are RoHS3 compliant. The original AT25080N-10SC-2.7 is RoHS non-compliant. If your application requires RoHS compliance, any of the recommended substitutes satisfy this requirement.
Q: Can I use a 10 MHz part (25LC080C-I/SN) in place of the 3 MHz original?
A: Yes. The 25LC080C-I/SN operates at 10 MHz, which is backward compatible with designs expecting 3 MHz operation. The higher clock frequency provides performance headroom without affecting functionality. Verify that the narrower supply voltage range (2.5V ~ 5.5V) and different operating temperature upper limit (85°C vs. 70°C) are acceptable for your application.
Q: What is the difference between Tube and Tape & Reel packaging?
A: Tube packaging is used for manual assembly or small-volume production. Tape & Reel (TR) packaging is used for automated pick-and-place assembly. Both contain identical parts; the choice depends on your manufacturing process. Tube parts are typically designated without a suffix (e.g., 25C080/SN), while Tape & Reel parts include a "T" suffix (e.g., 25C080T/SN).
Q: Which substitute should I choose for a new design?
A: For new designs, select 25LC080CT-I/SN (Tape & Reel, 10 MHz, -40°C ~ 85°C) or 25LC080CT-E/SN (Tape & Reel, 10 MHz, -40°C ~ 125°C). Both are active products with RoHS3 compliance, Tape & Reel packaging for automated assembly, and higher clock frequency providing performance margin. The choice between them depends on your required operating temperature range.
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