24LC04BT-I/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The 24LC04BT-I/OT is a 4 Kbit (512 × 8) I2C serial EEPROM from Microchip operating at 2.5 V with 400 kHz clock support and 1,000,000 write/erase cycle endurance. It comes in a compact 5-pin SOT-23 package with 200-year data retention, ideal for small embedded systems. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- 24LC04BT-I/OT Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4 Kbit (512 × 8) EEPROM with 1,000,000 write/erase cycle endurance and 200-year data retention rating
- I2C interface operating at up to 400 kHz on a 2.5 V supply for low-power embedded applications
- Ultra-compact 5-pin SOT-23 package enabling minimal board footprint in space-critical designs
Applications
The 24LC04BT-I/OT is widely used for storing calibration data, configuration parameters, and small lookup tables in microcontroller-based systems such as IoT sensors and wearable devices. Its I2C 2-wire interface simplifies bus wiring in multi-device systems, reducing GPIO requirements. The SOT-23 package and 2.5 V operation make it an excellent fit for battery-powered applications where board space and energy consumption are primary constraints.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| Date Of Intro | 1991-01-01 |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 0.4MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010XXMR |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Memory Density | 4096bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 512words |
| Number of Words Code | 512 |
| Operating Mode | SYNCHRONOUS |
| Organization | 512X8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 5V |
| Qualification Status | Not Qualified |
| Screening Level | AEC-Q100 |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Malaysia, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24LC04BT-I/OT:
Frequently Asked Questions
How many write cycles does the 24LC04BT-I/OT support and what does that mean for logging applications?
The 24LC04BT-I/OT guarantees 1,000,000 write/erase cycles per byte location, providing years of logging endurance for typical embedded applications. At 100 writes per day, that translates to approximately 27 years of operation, making it suitable for event counters, calibration storage, and infrequent configuration updates in industrial sensors.
What is the maximum I2C clock speed supported by the 24LC04BT-I/OT?
The 24LC04BT-I/OT supports I2C clock frequencies up to 400 kHz (Fast Mode), enabling rapid sequential reads and page writes across its 512-byte address space. At 400 kHz, a full 8-byte page write completes in under 200 µs, well within the 5 ms internal write cycle time, ensuring reliable non-blocking operation in time-sensitive firmware loops.
For a compact IoT node, how much board space does the 24LC04BT-I/OT SOT-23 package require compared to an 8-pin SOIC alternative?
The 5-pin SOT-23 package occupies approximately 5 mm² of board area (2.9 mm × 1.6 mm footprint), roughly 70% smaller than a standard 8-pin SOIC package which typically needs about 17 mm². This drastic footprint reduction is critical for wearable, coin-cell-powered, and densely populated IoT sensor PCBs where every square millimeter matters.
Can the 24LC04BT-I/OT store configuration data reliably over a product's 15-year field life?
Yes. Microchip specifies a minimum data retention of 200 years at room temperature for the 24LC04BT-I/OT, far exceeding a 15-year product life. Combined with 1,000,000 endurance cycles and the 2.5 V to 5.5 V operating range, the device reliably preserves calibration constants, device IDs, and firmware flags across the full industrial temperature range without data degradation.
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