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25LC080B-E/ST EEPROM Memory IC Equivalent & Substitute Parts
Part Overview
The 25LC080B-E/ST is an 8Kbit Serial Peripheral Interface (SPI) EEPROM memory IC manufactured by Microchip Technology. This non-volatile memory device operates at 10 MHz clock frequency with a supply voltage range of 2.5V to 5.5V and is housed in an 8-TSSOP surface mount package. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent memory capacity, interface protocol, package form factor, and operating specifications align with application requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Memory Size | 8Kbit |
| Memory Organization | 1K x 8 |
| Memory Interface | SPI |
| Clock Frequency | 10 MHz |
| Supply Voltage Range | 2.5V ~ 5.5V |
| Operating Temperature Range | -40°C ~ 125°C |
| Write Cycle Time | 5ms |
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the 25LC080B-E/ST are qualified based on the following criteria:
Core Compatibility Parameters:
- Memory capacity: 8Kbit
- Memory organization: 1K x 8
- Interface protocol: SPI
- Package form factor: 8-TSSOP with 0.173" width and 4.40mm dimensions
- Mounting type: Surface mount
Electrical Compatibility Parameters:
- Supply voltage range must encompass or be compatible with 2.5V ~ 5.5V
- Operating temperature range must support -40°C minimum and 125°C maximum, or be suitable for the intended application temperature window
- Clock frequency must be equal to or greater than 10 MHz
- Write cycle time must be equal to or less than 5ms
Compliance Parameters:
- ROHS3 compliance status
- Moisture sensitivity level (MSL 1 preferred for unlimited shelf life)
Substitutes are grouped by manufacturer and specific electrical characteristics. Parts with higher clock frequencies (20 MHz) or extended temperature ranges remain functionally compatible when voltage and package specifications align.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Memory Size | Clock Frequency (MHz) | Supply Voltage (V) | Operating Temperature (°C) | Write Cycle Time (ms) | Package | MSL |
|---|---|---|---|---|---|---|---|---|
| 25LC080B-E/ST | Microchip Technology | 8Kbit | 10 | 2.5 ~ 5.5 | -40 ~ 125 | 5 | 8-TSSOP | 1 |
| AT25080B-XHL-B | Microchip Technology | 8Kbit | 20 | 1.8 ~ 5.5 | -40 ~ 85 | 5 | 8-TSSOP | 3 |
| AT25080B-XHL-T | Microchip Technology | 8Kbit | 20 | 1.8 ~ 5.5 | -40 ~ 85 | 5 | 8-TSSOP | 3 |
| BR25H080FVT-2CE2 | Rohm Semiconductor | 8Kbit | 10 | 2.5 ~ 5.5 | -40 ~ 125 | 4 | 8-TSSOP-B | 1 |
| CAT25080YI-GT3 | onsemi | 8Kbit | Not Specified | 1.8 ~ 5.5 | -40 ~ 85 | 5 | 8-TSSOP | 1 |
| CAV25080YE-GT3 | onsemi | 8Kbit | 20 | 2.5 ~ 5.5 | -40 ~ 125 | 5 | 8-TSSOP | 1 |
| M95080-DFDW6TP | STMicroelectronics | 8Kbit | 20 | 1.7 ~ 5.5 | -40 ~ 85 | 5 | 8-TSSOP | 1 |
| M95080-DRDW3TP/K | STMicroelectronics | 8Kbit | 20 | 1.8 ~ 5.5 | -40 ~ 125 | 4 | 8-TSSOP | 1 |
| M95080-RDW6TP | STMicroelectronics | 8Kbit | 20 | 1.8 ~ 5.5 | -40 ~ 85 | 5 | 8-TSSOP | 1 |
| M95080-WDW6TP | STMicroelectronics | 8Kbit | 20 | 2.5 ~ 5.5 | -40 ~ 85 | 5 | 8-TSSOP | 1 |
| R1EX25008ATA00I#S0 | Renesas Electronics Corporation | 8Kbit | 5 | 1.8 ~ 5.5 | -40 ~ 85 | 5 | 8-TSSOP | 1 |
Engineering Selection Recommendations
Direct Substitutes (Equivalent Electrical and Thermal Specifications):
BR25H080FVT-2CE2 (Rohm Semiconductor) and CAV25080YE-GT3 (onsemi) provide the closest electrical match to the 25LC080B-E/ST. Both devices operate at 10 MHz or higher clock frequency, support the full -40°C to 125°C temperature range, maintain 2.5V to 5.5V supply voltage compatibility, and carry MSL 1 rating. BR25H080FVT-2CE2 includes AEC-Q100 automotive qualification. Both are available in 8-TSSOP packaging.
Higher Clock Frequency Alternatives (20 MHz):
AT25080B-XHL-T, M95080-DFDW6TP, M95080-DRDW3TP/K, M95080-RDW6TP, and M95080-WDW6TP operate at 20 MHz, providing increased performance headroom. These parts maintain 8Kbit capacity and 8-TSSOP packaging. M95080-DRDW3TP/K supports the full -40°C to 125°C temperature range with AEC-Q100 qualification. M95080-WDW6TP is verified for DiGi-Electronics programmability. Temperature range limitations apply to AT25080B-XHL-T, M95080-DFDW6TP, and M95080-RDW6TP, which operate to 85°C maximum.
Lower Clock Frequency Alternative:
R1EX25008ATA00I#S0 (Renesas Electronics Corporation) operates at 5 MHz, suitable for applications with reduced speed requirements. This part maintains 8Kbit capacity, 8-TSSOP packaging, and MSL 1 rating but is limited to -40°C to 85°C operating range.
Compliance Status:
All substitute parts maintain ROHS3 compliance and REACH unaffected status. MSL 1 rating is standard across all alternatives except AT25080B-XHL-B and AT25080B-XHL-T, which carry MSL 3 (168 hours) rating.
Frequently Asked Questions (FAQ)
Q: Can I use a 20 MHz substitute in place of the 10 MHz 25LC080B-E/ST?
A: Yes. Higher clock frequency operation is backward compatible. A 20 MHz device operates correctly in circuits designed for 10 MHz operation. The system clock will determine actual operating frequency.
Q: What is the significance of MSL rating differences?
A: MSL 1 (unlimited shelf life) provides superior storage stability compared to MSL 3 (168 hours). For applications with extended component storage or high-humidity environments, MSL 1 rated parts are preferred. MSL 3 parts require controlled storage conditions.
Q: Are automotive-qualified parts (AEC-Q100) required for my application?
A: AEC-Q100 qualification is required only for automotive applications. BR25H080FVT-2CE2, CAV25080YE-GT3, and M95080-DRDW3TP/K carry this qualification. Standard industrial applications do not require this certification.
Q: What is the impact of operating temperature range differences?
A: The 25LC080B-E/ST operates to 125°C maximum. Substitutes limited to 85°C maximum (AT25080B-XHL-T, M95080-DFDW6TP, M95080-RDW6TP, M95080-WDW6TP, R1EX25008ATA00I#S0) are unsuitable for high-temperature applications. BR25H080FVT-2CE2, CAV25080YE-GT3, and M95080-DRDW3TP/K maintain full temperature range compatibility.
Q: Does supply voltage range affect substitution compatibility?
A: The 25LC080B-E/ST operates from 2.5V to 5.5V. Substitutes with lower minimum voltage (1.7V or 1.8V) are compatible and provide additional flexibility for low-voltage applications. All listed substitutes support the 5.5V maximum specification.
Q: Is packaging compatibility guaranteed across all 8-TSSOP variants?
A: All parts use 8-TSSOP packaging with 0.173" width and 4.40mm dimensions. BR25H080FVT-2CE2 specifies 8-TSSOP-B variant, which maintains identical pin configuration and footprint compatibility with standard 8-TSSOP.
Q: What is the difference between Tube and Tape & Reel packaging?
A: Tube packaging is suitable for manual assembly and small-volume applications. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel packaging are optimized for automated pick-and-place assembly. Functional specifications remain identical; packaging choice depends on assembly process requirements.
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