24LC16B-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 24LC16B-I/SN is a Microchip 16 Kbit (2 KB) I2C serial EEPROM in an SOIC-8 package, supporting 400 kHz fast-mode operation with 2.5 V to 5.5 V supply. Features hardware write-protect and 16-byte page write buffer for reliable non-volatile storage. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC16B-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3097(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16 Kbit (2 KB) I2C EEPROM with 400 kHz fast-mode bus supports rapid sequential read and 16-byte page write in standard 2-wire microcontroller designs
- 2.5 V to 5.5 V wide supply range ensures compatibility with 3.3 V and 5 V MCU platforms without level-shifting circuitry
- Hardware write-protect (WP) pin combined with 1 million erase/write cycles provides reliable configuration and calibration data storage in industrial products
Applications
The 24LC16B-I/SN is used for storing calibration coefficients, device configuration parameters, and user settings in microcontroller-based systems where non-volatile retention across power cycles is required. It is well suited to industrial sensors, consumer appliances, and embedded control boards that use an I2C bus, as it connects directly to any MCU I2C peripheral using only SDA and SCL lines. The 8-lead SOIC package and low pin count make it a compact, low-cost solution for small-footprint designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 8Weeks |
| YTEOL | 8 |
| Memory IC Type | EEPROM |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Terminal Finish | Matte Tin (Sn) |
| Package | Small Outline Packages |
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 | Taiwan, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24LC16B-I/SN:
Frequently Asked Questions
How much data can the 24LC16B-I/SN store, and how is it organised internally?
The 24LC16B-I/SN stores 16 Kbits, which equals 2,048 bytes arranged as 8 blocks of 256 bytes each. The 3 upper bits of the device address byte select the active 256-byte block, allowing access to the full 2 KB address space using the standard 2-wire I2C protocol.
At what clock speed does the 24LC16B-I/SN operate on an I2C bus, and does it support standard-mode MCU peripherals?
The 24LC16B-I/SN supports I2C clock frequencies up to 400 kHz in fast mode. It is also fully compatible with 100 kHz standard-mode I2C peripherals, which means virtually any 8-bit or 32-bit MCU with a hardware I2C controller can interface with it without additional configuration.
How long will the 24LC16B-I/SN retain stored data without power, and what is its write endurance?
The 24LC16B-I/SN guarantees data retention of at least 200 years under normal operating conditions and supports a minimum of 1 million erase/write cycles per memory location. This endurance is sufficient for configuration registers updated daily over product lifetimes exceeding 2,700 years of write activity.
Can the 24LC16B-I/SN be used in a 3.3 V system alongside a 5 V MCU, and what protection does the WP pin offer?
The 24LC16B-I/SN operates from 2.5 V to 5.5 V, so a 3.3 V sub-system and a 5 V MCU cannot share a direct I2C connection without level translation; a simple two-resistor or dedicated level-shifter is needed. The hardware WP pin, when tied high to VCC, write-protects the upper half of the memory array (1 KB), preventing accidental overwrite of factory calibration or security credentials in production deployments.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.3890 | $0.39 |
| 4+ | $0.3205 | $1.28 |
| 5+ | $0.3108 | $1.55 |
| 16+ | $0.3097 | $4.95 |
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