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Equivalent & Substitute Parts for 25LC080T/SN
Part Overview
The 25LC080T/SN is an 8Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, configured for SPI serial interface operation at 2 MHz clock frequency. This device is housed in an 8-SOIC surface mount package and operates across a 2.5V to 5.5V supply voltage range with an industrial temperature range of 0°C to 70°C. The part is actively produced, RoHS3 compliant, and verified as programmable by DiGi-Electronics.
Substitute parts are necessary when the primary part number becomes unavailable, when packaging format requirements change, or when enhanced performance specifications (higher clock frequency, extended temperature range, or improved voltage tolerance) are required for system redesign or upgrade applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Memory Type | Non-Volatile EEPROM |
| Memory Size | 8Kbit |
| Memory Organization | 1K x 8 |
| Memory Interface | SPI |
| Clock Frequency | 2 MHz |
| Write Cycle Time | 5ms |
| Voltage Supply Range | 2.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 25LC080T/SN is determined by strict adherence to the following electrical and mechanical parameters:
Core Substitution Criteria:
- Memory capacity: 8Kbit (1K x 8 organization)
- Interface protocol: SPI serial interface
- Package format: 8-SOIC surface mount configuration
- Supply voltage compatibility: Minimum 2.5V operation required
- Write cycle time: 5ms maximum
- RoHS3 compliance and MSL rating
Substitution Categories:
Category 1: Direct Packaging Substitutes — Parts with identical electrical specifications but different packaging formats (Tube vs. Tape & Reel). These maintain 2 MHz clock frequency and 0°C to 70°C temperature range.
Category 2: Enhanced Performance Substitutes — Parts with upgraded clock frequency (10 MHz or 20 MHz), extended temperature ranges (-40°C to 85°C or -40°C to 125°C), or improved voltage tolerance (1.8V minimum). These provide backward compatibility while enabling higher-speed applications.
Category 3: Cross-Manufacturer Substitutes — Parts from alternative manufacturers (Rohm Semiconductor, STMicroelectronics, Atmel) meeting identical memory capacity, SPI interface, and 8-SOIC package specifications.
Clock frequency, operating temperature range, and voltage supply specifications determine whether a substitute part is suitable for direct replacement or represents an upgrade path.
Parameter Comparison
| Part Number | Manufacturer | Memory Size | Clock Frequency | Voltage Supply | Operating Temperature | Package | Packaging Format |
|---|---|---|---|---|---|---|---|
| 25LC080T/SN | Microchip Technology | 8Kbit | 2 MHz | 2.5V ~ 5.5V | 0°C ~ 70°C | 8-SOIC | Tape & Reel |
| 25LC080/SN | Microchip Technology | 8Kbit | 2 MHz | 2.5V ~ 5.5V | 0°C ~ 70°C | 8-SOIC | Tube |
| 25AA080AT-I/SN | Microchip Technology | 8Kbit | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Tape & Reel |
| 25LC080AT-I/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Tape & Reel |
| 25LC080BT-I/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Tape & Reel |
| 25LC080CT-E/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 8-SOIC | Tape & Reel |
| 25LC080CT-I/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Tape & Reel |
| 25LC080DT-E/SN | Microchip Technology | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 8-SOIC | Cut Tape & Digi-Reel |
| AT25080B-SSHL-B | Microchip Technology | 8Kbit | 20 MHz | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Tube |
| AT25080B-SSHL-T | Microchip Technology | 8Kbit | 20 MHz | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-SOIC | Cut Tape & Digi-Reel |
| BR25H080F-2CE2 | Rohm Semiconductor | 8Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 8-SOP | Tape & Reel |
Engineering Selection Recommendations
Direct Replacement (Identical Specifications):
The 25LC080/SN represents a direct functional equivalent to the 25LC080T/SN, differing only in packaging format (Tube versus Tape & Reel). Both parts maintain 2 MHz clock frequency, 2.5V to 5.5V supply voltage, and 0°C to 70°C operating temperature specifications. Selection between these two depends solely on assembly process requirements and packaging handling procedures.
Upgrade Path (Enhanced Performance):
The 25LC080AT-I/SN, 25LC080BT-I/SN, 25LC080CT-I/SN, and 25LC080CT-E/SN provide increased clock frequency (10 MHz) while maintaining the 2.5V to 5.5V supply voltage range. These parts extend the operating temperature range to -40°C to 85°C (or -40°C to 125°C for the CT-E variant), enabling deployment in industrial and automotive environments. These substitutes are backward compatible with 25LC080T/SN applications operating at reduced clock speeds.
Extended Voltage Range Upgrade:
The 25AA080AT-I/SN extends the minimum supply voltage to 1.8V while providing 10 MHz clock frequency and -40°C to 85°C temperature range. This part is suitable for low-power applications and battery-operated systems.
High-Speed Upgrade:
The AT25080B-SSHL-B and AT25080B-SSHL-T variants operate at 20 MHz clock frequency with 1.8V to 5.5V supply voltage range and -40°C to 85°C temperature specifications. These parts provide the highest performance within the 8Kbit SPI EEPROM category.
Cross-Manufacturer Alternative:
The BR25H080F-2CE2 from Rohm Semiconductor meets 8Kbit capacity, SPI interface, and 8-SOIC package requirements with 10 MHz clock frequency and -40°C to 125°C temperature range. This part carries AEC-Q100 automotive qualification and is suitable for automotive-grade applications.
All substitute parts maintain RoHS3 compliance and MSL ratings compatible with standard surface mount assembly processes.
Frequently Asked Questions (FAQ)
Q: Can the 25LC080/SN (Tube packaging) be used as a direct replacement for the 25LC080T/SN (Tape & Reel)?
A: Yes. Both parts are electrically and functionally identical, with 2 MHz clock frequency, 2.5V to 5.5V supply voltage, and 0°C to 70°C operating temperature. The difference is packaging format only. Selection depends on assembly equipment compatibility and handling procedures.
Q: What is the primary advantage of upgrading to 25LC080AT-I/SN or 25LC080CT-I/SN?
A: These parts provide 10 MHz clock frequency (5x faster than the original 2 MHz) and extend the operating temperature range to -40°C to 85°C. They maintain the 2.5V to 5.5V supply voltage specification and are backward compatible with existing 25LC080T/SN designs operating at reduced speeds.
Q: Is the AT25080B-SSHL-T suitable for direct replacement of the 25LC080T/SN?
A: The AT25080B-SSHL-T is functionally compatible but represents a performance upgrade. It operates at 20 MHz (versus 2 MHz), extends the voltage range to 1.8V minimum, and covers -40°C to 85°C temperature range. Applications designed for 2 MHz operation will function correctly with this part, but the higher clock frequency and extended specifications enable new application possibilities.
Q: What is the difference between 25LC080CT-E/SN and 25LC080CT-I/SN?
A: Both parts operate at 10 MHz with 2.5V to 5.5V supply voltage. The primary difference is operating temperature range: the CT-E variant covers -40°C to 125°C (extended industrial/automotive range), while the CT-I variant covers -40°C to 85°C (standard industrial range).
Q: Can the BR25H080F-2CE2 from Rohm Semiconductor replace the 25LC080T/SN?
A: The BR25H080F-2CE2 is functionally compatible with 8Kbit capacity, SPI interface, and 8-SOIC package format. It provides 10 MHz clock frequency and -40°C to 125°C temperature range. The package designation differs slightly (8-SOP versus 8-SOIC), but both are 0.154" to 0.173" width variants of the same physical form factor. This part is qualified for automotive applications per AEC-Q100.
Q: What does MSL (Moisture Sensitivity Level) rating mean for substitution?
A: MSL rating indicates moisture sensitivity during storage and handling. The 25LC080T/SN has MSL 1 (Unlimited shelf life). Most substitutes also carry MSL 1, except AT25080B-SSHL-B which has MSL 3 (168 hours). MSL 3 parts require controlled storage conditions and baking procedures before assembly. This affects supply chain handling but not electrical compatibility.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed carry RoHS3 compliance certification, matching the original 25LC080T/SN specification. All parts are also REACH Unaffected and carry EAR99 export classification.
Q: Which substitute part provides the lowest minimum supply voltage?
A: The 25AA080AT-I/SN and AT25080B-SSHL-B/T variants operate at 1.8V minimum supply voltage, compared to 2.5V for the original 25LC080T/SN. These parts enable operation in low-power and battery-powered applications.
Q: Can I use a higher clock frequency part in a design specified for 2 MHz operation?
A: Yes. Higher clock frequency parts (10 MHz or 20 MHz variants) are backward compatible with 2 MHz designs. The SPI interface will operate at the lower clock speed specified by the host controller. No design changes are required, and the higher-speed part will function identically to the original specification.
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