24AA64T-I/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The 24AA64T-I/OT is a 64 Kbit I2C serial EEPROM from Microchip with 400 kHz fast-mode I2C interface, 1 million write/erase cycle endurance, and 200-year minimum data retention. It is housed in a tiny SOT-23-5 package ideal for space-constrained designs. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- 24AA64T-I/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4036(MOQ 25)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 24AA64T-I/OT?
- 64 Kbit (8 KB) I2C EEPROM with up to 400 kHz fast-mode clock, enabling non-volatile data logging on any standard I2C microcontroller bus
- 1 million write/erase cycle endurance and 200-year data retention provide long-lifetime reliability for calibration, configuration, and serial number storage
- SOT-23-5 package with hardware address pins supports up to 8 devices on a single I2C bus, expanding non-volatile storage to 512 Kbits without code changes
What is 24AA64T-I/OT used for?
The 24AA64T-I/OT is used in embedded systems for non-volatile storage of calibration coefficients, configuration parameters, event logs, and factory serial numbers where frequent writes are required. Its 400 kHz I2C interface integrates directly with virtually all modern microcontrollers including PIC, AVR, STM32, and ESP32 platforms. The compact SOT-23-5 package and 1 million cycle endurance make it a reliable choice for industrial sensors, medical devices, and consumer electronics requiring persistent storage in minimal board area.
What are the specifications of 24AA64T-I/OT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Clock Frequency-Max (fCLK) | 0.4MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010XXXR |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Memory Density | 65536bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 8192words |
| Number of Words Code | 8000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 8KX8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 2.5V |
| Qualification Status | Not Qualified |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.7V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| 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 | Thailand |
Where can I find the 24AA64T-I/OT datasheet?
24AA64T-I/OT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 24AA64T-I/OT?
Compatible alternatives and drop-in replacements for 24AA64T-I/OT:
suggested
suggested
suggested
suggested
Frequently Asked Questions
How much non-volatile storage does the 24AA64T-I/OT provide and at what I2C speed does it operate?
The 24AA64T-I/OT provides 64 Kbits, equivalent to 8 KB, of non-volatile EEPROM storage accessible via the I2C interface at up to 400 kHz in fast mode. This capacity is sufficient to store thousands of sensor readings, configuration tables, or calibration coefficients, and the 400 kHz clock allows a full page write of 32 bytes in approximately 80 µs of bus time.
How many write cycles can the 24AA64T-I/OT endure before wear affects data reliability?
The 24AA64T-I/OT is rated for a minimum of 1 million write/erase cycles per memory address, which exceeds the needs of most embedded applications. A design that writes to the same location once per minute would reach the 1 million cycle limit only after approximately 2 years of continuous operation, and data retention is specified at a minimum of 200 years after the last write.
How many 24AA64T-I/OT devices can coexist on the same I2C bus in a multi-EEPROM design?
Up to 8 individual 24AA64T-I/OT devices can share the same I2C bus by using the 3 hardware address pins (A0, A1, A2) to assign unique 7-bit I2C addresses. This configuration expands total non-volatile storage to 512 Kbits (64 KB) on a single 2-wire bus. All devices can operate simultaneously at 400 kHz with standard I2C arbitration and clock-stretching support.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.4840 | $12.10 |
| 50+ | $0.4740 | $23.70 |
| 100+ | $0.4500 | $45.00 |
| 1000+ | $0.4300 | $430.00 |
| 5000+ | $0.4100 | $2050.00 |
| 12000+ | $0.4036 | $4842.72 |
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