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24FC16HT-E/OT EEPROM Memory IC Equivalent & Substitute Parts
Part Overview
The 24FC16HT-E/OT is a 16Kbit non-volatile EEPROM memory integrated circuit manufactured by Microchip Technology. This device operates via I2C interface at 1 MHz clock frequency with 450 ns access time, housed in a SOT-23-5 surface mount package. The part is currently in active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across memory capacity, interface protocol, voltage specifications, temperature range, and physical packaging. Identifying qualified substitutes ensures design flexibility and supply chain continuity while maintaining functional compatibility.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Memory Size | 16Kbit |
| Memory Organization | 2K x 8 |
| Memory Interface | I2C |
| Clock Frequency | 1 MHz |
| Access Time | 450 ns |
| Write Cycle Time | 5ms |
| Voltage Supply Range | 1.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C |
| Package Type | SOT-23-5 (SC-74A, SOT-753) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 24FC16HT-E/OT is determined by strict equivalence across the following critical parameters:
Memory Specifications: Memory size must equal 16Kbit with 2K x 8 organization. Memory format must be EEPROM with I2C interface protocol.
Electrical Performance: Clock frequency must be 1 MHz. Access time must be 450 ns. Write cycle time must be 5ms. Supply voltage range must span 1.7V to 5.5V. Operating temperature range must encompass -40°C to 125°C.
Physical & Environmental: Package type must be SOT-23-5 (SC-74A, SOT-753). Mounting type must be surface mount. RoHS3 compliance and MSL 1 rating must be maintained.
Manufacturer: Microchip Technology as the original equipment manufacturer.
Parts meeting all specified parameters are classified as parametric equivalents and direct substitutes.
Parameter Comparison
| Parameter | 24FC16HT-E/OT (Main Part) | 24FC16T-E/OT (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Identical |
| Memory Size | 16Kbit | 16Kbit | Identical |
| Memory Organization | 2K x 8 | 2K x 8 | Identical |
| Memory Format | EEPROM | EEPROM | Identical |
| Memory Interface | I2C | I2C | Identical |
| Clock Frequency | 1 MHz | 1 MHz | Identical |
| Access Time | 450 ns | 450 ns | Identical |
| Write Cycle Time | 5ms | 5ms | Identical |
| Voltage Supply Range | 1.7V ~ 5.5V | 1.7V ~ 5.5V | Identical |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | Identical |
| Package Type | SOT-23-5 | SOT-23-5 | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Identical |
| Product Status | Active | Active | Identical |
Engineering Selection Recommendations
The 24FC16T-E/OT qualifies as a direct parametric equivalent to the 24FC16HT-E/OT. Both parts are manufactured by Microchip Technology and maintain identical electrical, mechanical, and environmental specifications across all critical parameters.
Both parts carry active product status, indicating ongoing manufacturer support and availability. ROHS3 compliance and MSL 1 rating are maintained across both devices, ensuring regulatory and environmental compatibility in production environments.
Selection between these parts may be based on inventory availability, lead time, or supply chain considerations, as functional and physical compatibility is complete.
Frequently Asked Questions (FAQ)
Q: Can the 24FC16T-E/OT replace the 24FC16HT-E/OT in existing designs?
A: Yes. The 24FC16T-E/OT is a direct parametric equivalent with identical memory capacity, I2C interface, clock frequency, access time, voltage range, temperature range, and SOT-23-5 package specifications. No design modifications are required.
Q: Are there differences in the package or pinout between these parts?
A: No. Both parts use the SOT-23-5 package (SC-74A, SOT-753) with identical physical dimensions and pin configuration. PCB layout and footprint compatibility is maintained.
Q: Do both parts meet the same compliance standards?
A: Yes. Both the 24FC16HT-E/OT and 24FC16T-E/OT are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating. Regulatory and environmental requirements are equivalent.
Q: What is the difference between the part numbers 24FC16HT-E/OT and 24FC16T-E/OT?
A: The part numbers differ in the suffix designation (HT versus T), which typically indicates a variation in manufacturing process, date code, or packaging reel configuration. Electrical and functional specifications remain identical.
Q: Are both parts currently available from Microchip Technology?
A: Yes. Both parts maintain active product status. The 24FC16HT-E/OT has 4023 pieces in stock, and the 24FC16T-E/OT has 3697 pieces in stock as new original inventory.
Q: Can these parts be used interchangeably in I2C bus applications?
A: Yes. Both parts operate at 1 MHz I2C clock frequency with 450 ns access time and support the full 1.7V to 5.5V supply voltage range. I2C bus compatibility is complete.
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