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Equivalent & Substitute Parts for 25AA080A-I/ST
Part Overview
The 25AA080A-I/ST is an 8Kbit EEPROM memory IC manufactured by Microchip Technology, featuring SPI interface operation at 10 MHz with 8-TSSOP surface mount packaging. This non-volatile memory device operates across a supply voltage range of 1.8V to 5.5V and supports industrial temperature ranges from -40°C to 85°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Equivalent and substitute parts are identified based on matching core electrical and mechanical specifications: 8Kbit memory capacity, 1K x 8 organization, SPI interface protocol, 8-TSSOP package form factor, and compatible operating voltage and temperature ranges. Substitutes may vary in clock frequency, write cycle time, and automotive qualification status while maintaining functional compatibility.
Substiute Parts
Key Parameters
| Parameter | 25AA080A-I/ST |
|---|---|
| Memory Size | 8Kbit |
| Memory Organization | 1K x 8 |
| Memory Interface | SPI |
| Clock Frequency | 10 MHz |
| Write Cycle Time | 5ms |
| Voltage Supply Range | 1.8V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility is determined by the following mandatory parameters:
- Memory capacity: 8Kbit (1K x 8 organization)
- Interface protocol: SPI
- Package type: 8-TSSOP surface mount
- Supply voltage compatibility: Minimum 1.8V support required
- Operating temperature range: Minimum -40°C to 85°C support required
Substitute parts are grouped into two categories:
Direct Equivalents maintain all electrical specifications including 10 MHz clock frequency and 5ms write cycle time, with identical voltage and temperature ranges.
Compatible Substitutes provide enhanced performance specifications (higher clock frequency, faster write cycles, or extended temperature ranges) or automotive-grade qualification (AEC-Q100) while maintaining backward compatibility with the base 8Kbit SPI EEPROM architecture.
Parameter Comparison
| Part Number | Manufacturer | Memory Size | Clock Frequency | Write Cycle Time | Voltage Supply | Operating Temperature | Package | MSL Rating | Automotive Grade |
|---|---|---|---|---|---|---|---|---|---|
| 25AA080A-I/ST | Microchip Technology | 8Kbit | 10 MHz | 5ms | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 1 | No |
| 25AA080C-I/ST | Microchip Technology | 8Kbit | 10 MHz | 5ms | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 1 | No |
| AT25080B-XHL-B | Microchip Technology | 8Kbit | 20 MHz | 5ms | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 3 | No |
| AT25080B-XHL-T | Microchip Technology | 8Kbit | 20 MHz | 5ms | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 3 | No |
| BR25H080FVT-2CE2 | Rohm Semiconductor | 8Kbit | 10 MHz | 4ms | 2.5V ~ 5.5V | -40°C ~ 125°C | 8-TSSOP-B | 1 | Yes (AEC-Q100) |
| CAT25080YI-GT3 | onsemi | 8Kbit | Not specified | 5ms | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 1 | No |
| CAV25080YE-GT3 | onsemi | 8Kbit | 20 MHz | 5ms | 2.5V ~ 5.5V | -40°C ~ 125°C | 8-TSSOP | 1 | Yes (AEC-Q100) |
| M95080-DFDW6TP | STMicroelectronics | 8Kbit | 20 MHz | 5ms | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 1 | No |
| M95080-DRDW3TP/K | STMicroelectronics | 8Kbit | 20 MHz | 4ms | 1.8V ~ 5.5V | -40°C ~ 125°C | 8-TSSOP | 1 | Yes (AEC-Q100) |
| M95080-DRDW8TP/K | STMicroelectronics | 8Kbit | 20 MHz | 4ms | 1.8V ~ 5.5V | -40°C ~ 105°C | 8-TSSOP | 1 | Yes (AEC-Q100) |
| M95080-RDW6TP | STMicroelectronics | 8Kbit | 20 MHz | 5ms | 1.8V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | 1 | No |
Engineering Selection Recommendations
Direct Equivalent Selection: The 25AA080C-I/ST from Microchip Technology provides identical electrical and thermal specifications to the 25AA080A-I/ST, maintaining 10 MHz clock frequency, 5ms write cycle time, and -40°C to 85°C operating range. Both parts carry ROHS3 compliance and MSL 1 rating. This part is recommended for direct replacement in existing designs without modification.
Performance-Enhanced Substitutes: The AT25080B-XHL-T and AT25080B-XHL-B variants from Microchip Technology offer doubled clock frequency (20 MHz) while maintaining identical voltage and temperature specifications. These parts are suitable for applications requiring faster SPI communication without thermal or voltage constraint changes. The AT25080B-XHL-T is available in Cut Tape and Digi-Reel packaging, while AT25080B-XHL-B is supplied in Tube packaging.
Automotive-Grade Alternatives: The BR25H080FVT-2CE2 (Rohm Semiconductor), CAV25080YE-GT3 (onsemi), M95080-DRDW3TP/K, M95080-DRDW8TP/K, and M95080-RDW6TP (STMicroelectronics) are AEC-Q100 qualified automotive-grade parts. These devices are suitable for automotive and industrial applications requiring extended temperature operation (-40°C to 125°C or -40°C to 105°C) and automotive qualification. The BR25H080FVT-2CE2 and CAV25080YE-GT3 maintain 10 MHz and 20 MHz operation respectively with faster 4ms write cycles.
Industrial Temperature Extended Range: The M95080-DRDW3TP/K and M95080-DRDW8TP/K from STMicroelectronics extend operating temperature to -40°C to 125°C and -40°C to 105°C respectively, with 20 MHz clock frequency and 4ms write cycle time, suitable for high-temperature industrial environments.
Standard Industrial Substitutes: The M95080-DFDW6TP and M95080-RDW6TP from STMicroelectronics provide 20 MHz operation with standard -40°C to 85°C temperature range. The M95080-DFDW6TP supports extended supply voltage down to 1.7V, offering broader voltage compatibility.
Frequently Asked Questions (FAQ)
Q: Can the 25AA080A-I/ST be directly replaced with 25AA080C-I/ST?
A: Yes. Both parts are Microchip Technology EEPROM devices with identical 8Kbit capacity, 10 MHz SPI interface, 5ms write cycle time, 1.8V to 5.5V supply voltage, and -40°C to 85°C operating temperature. Both carry ROHS3 compliance and MSL 1 rating. The 25AA080C-I/ST is a direct functional equivalent.
Q: What is the difference between 10 MHz and 20 MHz clock frequency variants?
A: Clock frequency determines the maximum SPI communication speed. The 10 MHz variants (25AA080A-I/ST, 25AA080C-I/ST, BR25H080FVT-2CE2) support SPI clock rates up to 10 MHz. The 20 MHz variants (AT25080B-XHL-T, AT25080B-XHL-B, CAV25080YE-GT3, M95080 series) support SPI clock rates up to 20 MHz. Higher clock frequency enables faster data transfer but requires compatible SPI controller support. Both are backward compatible with lower clock rates.
Q: Are automotive-grade parts (AEC-Q100) required for non-automotive applications?
A: Automotive-grade qualification is not required for standard industrial or consumer applications. AEC-Q100 qualified parts (BR25H080FVT-2CE2, CAV25080YE-GT3, M95080-DRDW3TP/K, M95080-DRDW8TP/K) are specifically qualified for automotive environments and extended temperature ranges. Standard industrial parts are suitable for non-automotive applications within their specified temperature and voltage ranges.
Q: What is the significance of MSL (Moisture Sensitivity Level) rating?
A: MSL rating indicates moisture sensitivity during storage and handling. MSL 1 (unlimited) means the component has no moisture sensitivity restrictions and can be stored indefinitely without special desiccant packaging. MSL 3 (168 hours) requires storage in controlled humidity environments and has a 168-hour floor life after opening. The 25AA080A-I/ST carries MSL 1 rating. Most substitutes also carry MSL 1, except AT25080B variants which carry MSL 3.
Q: Can parts with extended temperature ranges (-40°C to 125°C) be used in standard -40°C to 85°C applications?
A: Yes. Extended temperature range parts are backward compatible with standard temperature range applications. A part rated for -40°C to 125°C operation will function correctly in applications requiring only -40°C to 85°C. Extended temperature capability provides design flexibility for future applications without requiring component redesign.
Q: What packaging options are available for these 8Kbit SPI EEPROM parts?
A: All listed parts use 8-TSSOP surface mount package with 0.173" width and 4.40mm body width. Packaging format variations include Tube (standard reel packaging), Cut Tape (CT) & Digi-Reel, and Tape & Reel (TR). These are supply format differences only; the physical component package remains identical 8-TSSOP.
Q: Is the 25AA080A-I/ST compatible with 1.8V supply voltage applications?
A: Yes. The 25AA080A-I/ST supports supply voltage from 1.8V to 5.5V. However, verify that the specific SPI interface signals and timing requirements are met at 1.8V operation, as some controller interfaces may require higher voltage levels for reliable signal levels.
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