11LC040T-I/TT Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
11LC040T-I/TT is a 4 Kbit (512 x 8) single-wire serial EEPROM from Microchip operating at 2.5V to 5.5V in a tiny 3-pin SOT-23 package, with up to 1 MHz clock and 1,000,000 write/erase cycle endurance. It uses a UNI/O single-wire interface that requires only one I/O pin, minimizing MCU pin usage in space-constrained designs. Available from global distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- 11LC040T-I/TT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1950(MOQ 1)
- 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 11LC040T-I/TT?
- 4 Kbit (512 bytes) non-volatile EEPROM storage for compact parameter storage
- Single-wire UNI/O interface requires only 1 MCU I/O pin
- Up to 1 MHz clock frequency for efficient serial data access
- 1,000,000 write/erase cycle endurance for long product life
- Operates from 2.5V to 5.5V supply covering a wide voltage range
- Minimum 200-year data retention for long-term non-volatile storage
- Ultra-compact 3-pin SOT-23 package for the smallest PCB footprint
What is 11LC040T-I/TT used for?
The 11LC040T-I/TT is ideal for storing configuration data, calibration constants, and serial numbers in space-constrained embedded designs where minimizing MCU pin count is critical. Its single-wire UNI/O interface uses just one I/O line, making it particularly attractive for small microcontrollers with limited I/O pins such as PIC10 or PIC12 devices. The tiny SOT-23 package is well-suited for wearable electronics, sensor nodes, and battery-powered IoT devices requiring minimal board space.
What are the specifications of 11LC040T-I/TT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| Factory Lead Time | 8Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 1MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G3 |
| 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 | TOTEM POLE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Ready/Busy | NO |
| Reverse Pinout | NO |
| Screening Level | AEC-Q100 |
| Serial Bus Type | 1-WIRE |
| Standby Current-Max | 0.000005A |
| Supply Current-Max | 0.005mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 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 |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Toggle Bit | NO |
| Write Cycle Time-Max (tWC) | 10ms |
| Write Protection | SOFTWARE |
| Package | SOT23 (3-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 11LC040T-I/TT datasheet?
11LC040T-I/TT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 11LC040T-I/TT?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does 11LC040T-I/TT's single-wire UNI/O interface compare to I2C in terms of pin requirements?
The 11LC040T-I/TT uses the Microchip UNI/O single-wire serial interface, requiring only 1 MCU I/O pin, compared to I2C which requires 2 pins (SDA and SCL). This 1-pin advantage is valuable on microcontrollers with fewer than 8 I/O pins, such as PIC10F devices, where saving even 1 pin can enable additional sensor or control connections in the same design.
What is the storage density and maximum clock speed of the 11LC040T-I/TT?
The 11LC040T-I/TT provides 4 Kbits (512 bytes) of EEPROM organized as 512 x 8-bit words, accessible via the single-wire interface at up to 1 MHz clock frequency. This combination provides adequate storage for device serial numbers, trim constants, and small configuration tables while enabling reasonably fast sequential read operations in firmware initialization routines.
For a wearable sensor design operating from a 3.3V LiPo battery, does 11LC040T-I/TT meet the supply voltage requirements?
Yes, the 11LC040T-I/TT operates across a supply voltage range of 2.5V to 5.5V, which fully covers the 3.3V rail typical of LiPo-powered wearables. Its 3-pin SOT-23 package occupies minimal PCB area, and the 1,000,000 write/erase endurance ensures the device can reliably store daily calibration updates over the product's multi-year operational life.
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About Microchip
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2700 | $0.27 |
| 100+ | $0.2500 | $25.00 |
| 250+ | $0.2400 | $60.00 |
| 500+ | $0.2100 | $105.00 |
| 1000+ | $0.1950 | $195.00 |
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