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24LC08BHT-E/ST EEPROM Memory IC Equivalent & Substitute Parts
Part Overview
The 24LC08BHT-E/ST is an 8Kbit I2C EEPROM memory IC manufactured by Microchip Technology, designed for non-volatile data storage applications requiring serial communication. This device operates across a wide supply voltage range of 2.5V to 5.5V and maintains functionality across industrial temperature ranges from -40°C to 125°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across all critical parameters.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Memory Size | 8Kbit |
| Memory Format | EEPROM |
| Memory Interface | I2C |
| Clock Frequency | 400 kHz |
| Access Time | 900 ns |
| Write Cycle Time | 5ms |
| Voltage Supply Range | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C |
| Package Type | 8-TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the 24LC08BHT-E/ST is determined by strict equivalence across the following critical parameters:
- Memory capacity: 8Kbit EEPROM
- Communication protocol: I2C serial interface at 400 kHz
- Electrical performance: 900 ns access time, 5ms write cycle time
- Supply voltage compatibility: 2.5V to 5.5V operating range
- Temperature rating: -40°C to 125°C operational envelope
- Physical form factor: 8-TSSOP surface mount package
- Regulatory compliance: ROHS3 certification
The CAV24C08YE-GT3 meets all specified parameters and qualifies as a parametric equivalent substitute.
Parameter Comparison
| Parameter | 24LC08BHT-E/ST (Microchip) | CAV24C08YE-GT3 (onsemi) |
|---|---|---|
| Memory Size | 8Kbit | 8Kbit |
| Memory Format | EEPROM | EEPROM |
| Memory Interface | I2C | I2C |
| Clock Frequency | 400 kHz | 400 kHz |
| Access Time | 900 ns | 900 ns |
| Write Cycle Time | 5ms | 5ms |
| Voltage Supply Range | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Package Type | 8-TSSOP | 8-TSSOP |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the 24LC08BHT-E/ST and CAV24C08YE-GT3 maintain active production status with full ROHS3 compliance. The CAV24C08YE-GT3 carries additional AEC-Q100 automotive qualification, which provides enhanced reliability documentation for applications requiring automotive-grade components. Selection between these parts should be based on supply chain availability, inventory levels, and specific application qualification requirements. Both devices are electrically and mechanically interchangeable within the specified parameter envelope.
Frequently Asked Questions (FAQ)
Q: Can the CAV24C08YE-GT3 replace the 24LC08BHT-E/ST in existing designs?
A: Yes. Both devices share identical electrical specifications across memory capacity, interface protocol, timing characteristics, voltage range, and temperature rating. The 8-TSSOP package pinout is mechanically compatible. No design modifications are required.
Q: What is the significance of AEC-Q100 qualification on the CAV24C08YE-GT3?
A: AEC-Q100 qualification indicates the component has undergone automotive-grade reliability testing and documentation. This certification is relevant only for applications requiring automotive-grade component traceability. For general industrial or consumer applications, both parts are functionally equivalent.
Q: Are there differences in memory organization between these parts?
A: The 24LC08BHT-E/ST specifies 256 x 8 x 4 organization while the CAV24C08YE-GT3 specifies 1K x 8 organization. Both configurations deliver 8Kbit total capacity and are functionally equivalent for I2C EEPROM applications.
Q: Do both parts support the same I2C clock frequency?
A: Yes. Both devices operate at 400 kHz I2C clock frequency with identical 900 ns access time and 5ms write cycle time specifications.
Q: What packaging considerations apply to substitution?
A: Both parts use 8-TSSOP surface mount packages with 0.173" width and 4.40mm dimensions. Footprint compatibility is confirmed. No PCB layout modifications are necessary.
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