11AA161T-I/TT Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
11AA161T-I/TT is a 16 Kbit (2048 x 8) serial EEPROM from Microchip operating from 1.8 V, communicating via a single-wire UNI/O interface at up to 1 MHz. It offers 1 million write/erase cycles and 200-year data retention in a compact SOT-23-3 package for industrial-grade applications.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- 11AA161T-I/TT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2600(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16 Kbit (2048 x 8) EEPROM capacity for compact non-volatile data storage
- Single-wire UNI/O serial interface simplifies PCB routing with only 1 data line
- 1.8 V operating voltage for low-power and battery-operated system compatibility
- 1 MHz maximum clock frequency for fast serial data transfer
- 1,000,000 write/erase cycle endurance for high-reliability write-intensive applications
- 200-year minimum data retention at 25°C ensuring long-term non-volatile storage
- SOT-23-3 package offering minimum footprint for space-constrained designs
Applications
11AA161T-I/TT is ideal for storing calibration constants, configuration parameters, and small data tables in battery-powered IoT sensors, wearables, and medical monitoring devices where pin count and board area are critical. The single-wire UNI/O interface minimizes GPIO usage on host microcontrollers, making it valuable in ultra-compact designs such as smart cards, RFID tags, and sensor nodes. Its 1.8 V supply compatibility and SOT-23 footprint integrate seamlessly into low-voltage embedded systems built around modern energy-harvesting or coin-cell battery architectures.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| YTEOL | 13 |
| 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 | 16384bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 2048words |
| Number of Words Code | 2000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 2KX8 |
| 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) | 1.8V |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the UNI/O single-wire interface of 11AA161T-I/TT reduce GPIO usage compared to standard I2C EEPROMs?
11AA161T-I/TT uses Microchip's UNI/O protocol, requiring only 1 data pin versus the 2 pins (SDA and SCL) needed by I2C EEPROMs. At a clock rate up to 1 MHz, it achieves comparable throughput to 400 kHz I2C while freeing a GPIO on the host microcontroller, which is especially beneficial in 8-pin or smaller MCU packages where every pin matters.
What endurance and retention specifications make 11AA161T-I/TT suitable for write-intensive logging applications?
11AA161T-I/TT is rated for 1,000,000 write/erase cycles per byte location and guarantees data retention of at least 200 years at 25°C. These figures make it reliable for applications such as event counters, usage loggers, and calibration storage that write frequently over the product lifetime without risking data loss.
Which low-voltage embedded platforms benefit most from the 1.8 V supply specification of 11AA161T-I/TT?
The 1.8 V supply of 11AA161T-I/TT makes it directly compatible with modern low-power microcontrollers such as those in the ARM Cortex-M0+ and RISC-V families that run at 1.8 V core rails. Battery-powered wearables, energy-harvesting sensor nodes, and devices powered by two AAA cells (nominal 3 V dropping to under 2 V) all benefit from this low minimum supply without needing a separate voltage regulator for the EEPROM.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.2900 | $29.00 |
| 1000+ | $0.2700 | $270.00 |
| 5000+ | $0.2600 | $1300.00 |
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