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Microchip Technology
24LC08BT-I/OT
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Tech Specifications
24LC08BT-I/OT Description
24LC08BT-I/OT
8Kbit (1K x 8) I²C Serial EEPROM | 2.5V to 5.5V | 400kHz | Industrial Grade | SOT-23-5
Density (1KB)
Interface
Max Clock
Supply Range
Ultra‑Compact
Product Overview
The Microchip 24LC08BT-I/OT is an 8Kbit (1,024 x 8) serial EEPROM with a 2‑wire I²C serial interface. Operating over a wide voltage range of 2.5V to 5.5V, it is compatible with 3V and 5V systems, making it an ideal choice for mixed‑voltage designs. The device supports standard (100kHz) and fast (400kHz) I²C modes, providing flexible and efficient data transfer for configuration storage, device parameters, calibration data, and small data logging applications.
The 24LC08BT is organized with a 16‑byte page write buffer, a maximum write cycle time of 5 ms, and features hardware write protection (WP pin) that safeguards the entire memory array. Packaged in an ultra‑compact 5‑pin SOT‑23 surface‑mount package (I/OT suffix), it occupies minimal board space, ideal for space‑constrained designs such as wearables, IoT sensors, and portable medical devices. The device operates over the industrial temperature range of -40°C to +85°C and offers 1 million write cycles and 200‑year data retention, ensuring long‑term reliability for industrial and embedded applications.
📊 Technical Specifications
| Density / Organization | 8Kbit (1,024 x 8 bits) — 1KB |
| Memory Interface | 2-wire I²C serial bus (SDA, SCL) — compatible with I²C standard protocol |
| Clock Frequency | 400 kHz (max) — Fast mode, also supports 100kHz Standard mode |
| Write Cycle Time (tW) | 5 ms maximum (page write) |
| Page Write Size | 16 bytes per page |
| Supply Voltage (Vcc) | 2.5V – 5.5V |
| Operating Temperature | Industrial: -40°C to +85°C |
| Storage Temperature | -65°C to +150°C |
| Package Type | 5‑pin SOT‑23 (JEDEC MO‑178) — I/OT code |
| Package Dimensions | 2.9 x 1.6 x 1.1 mm (approx) |
| Endurance | 1,000,000 write cycles (minimum) |
| Data Retention | 200 years (minimum) @ 55°C |
| Active Read Current | 1 mA (typical @ 5V, 400kHz) |
| Standby Current | 1 µA (typical) |
| Write Protection | Hardware WP pin — protects entire array |
| Device Addressing | A0, A1, A2 pins allow up to 8 devices on same bus |
| RoHS / Halogen Free | Yes — “I/OT” suffix indicates industrial temp, tape & reel, Pb‑free |
| ESD Protection | HBM > 4000V, CDM > 1000V |
| Moisture Sensitivity Level | MSL 1 (unlimited floor life) |
| Part Status | Active — In production |
✨ Key Features
- ✅ Ultra‑Compact SOT‑23‑5 Package – 2.9 x 1.6 mm footprint, ideal for space‑constrained and portable designs
- ✅ Wide Voltage Operation – 2.5V to 5.5V, compatible with 3.3V and 5V systems
- ✅ Low Power Consumption – 1µA standby current, extends battery life in wearable and IoT devices
- ✅ Hardware Write Protection – WP pin prevents accidental writes to entire memory array
- ✅ Page Write Capability – 16‑byte page write reduces programming time
- ✅ High Endurance – 1 million write cycles for frequent parameter updates
- ✅ Long Data Retention – 200 years of data retention ensures long‑term reliability
- ✅ Multi‑Device Support – Up to 8 devices on same I²C bus via A0/A1/A2 pins
- ✅ Industrial Temperature Range – -40°C to +85°C for outdoor and factory automation
- ✅ Schmitt Trigger Inputs for Noise Suppression – Improved signal integrity in noisy environments
- ✅ Output Slope Control – Reduces ground bounce and EMI
- ✅ Microchip Quality & Long‑term Availability – 15‑20 year product support for industrial designs
⚡ I²C Performance & Write Protection
Write throughput: up to 3.2 kbyte/s (page write)
WP pin high = full array write‑protected
The 24LC08BT includes a write enable latch (WEL) that prevents accidental writes after power‑up. A write disable command resets the latch, adding an extra layer of security against unintended modifications.
🧠 Memory Organization & Addressing
The 8Kbit memory is organized as 1,024 x 8 (1KB). The device uses a byte‑wide address (8‑bit) for random reads/writes. Page write allows up to 16 consecutive bytes to be written with a single internal write cycle, significantly improving throughput for block updates. The I²C slave address comprises a fixed portion (1010) and the three address pins (A2, A1, A0), allowing up to eight devices on the same bus.
📦 Ordering Information & Part Number Decoder
| Orderable Part Number | Temperature | Package | Description |
|---|---|---|---|
| 24LC08BT-I/OT | -40°C to +85°C | SOT‑23‑5 | Industrial, tape & reel (3000 pcs/reel) |
| 24LC08BT-I/SN | -40°C to +85°C | SOIC-8 (150mil) | Industrial, tape & reel |
| 24LC08BT-I/MS | -40°C to +85°C | MSOP-8 | Industrial, tape & reel |
| 24LC08BT-I/ST | -40°C to +85°C | TSSOP-8 | Industrial, tape & reel |
• 24LC08B – Microchip 8Kbit I²C serial EEPROM, 2.5V‑5.5V
• T – Tape & Reel packaging (3000 pcs/reel for SOT‑23)
• -I – Industrial temperature range (-40°C to +85°C)
• /OT – Package: SOT‑23‑5
🏆 Why Microchip?
Microchip Technology Inc. (NASDAQ: MCHP) is a leading provider of microcontrollers, mixed-signal, analog, and Flash-IP solutions. With over 30 years of innovation, Microchip offers comprehensive technical support, long product lifecycles, and industry-leading quality. The 24LCxx series of I²C EEPROMs is an industry standard, trusted by engineers worldwide for its reliability, low power, and wide voltage operation.
- #1 Serial EEPROM supplier worldwide – over 25 billion units shipped
- 40+ year legacy in memory products, including EEPROM, Flash, and serial SRAM
- AEC-Q100 qualified automotive options for all 24LCxx devices
- Global supply chain with authorized distributors in every region
- Free samples & comprehensive documentation available at Microchip Direct
The 24LC08BT is manufactured in Microchip’s own fabs, ensuring consistent quality, traceability, and long-term availability (minimum 15-year support).
🛠️ Development Tools & Resources
Microchip offers free samples, reference designs, and 24/7 technical support via their support portal. The 24LC08B is fully compatible with Microchip’s MPLAB® development environment and Harmony framework.
📄 Certifications & Compliance
- RoHS 2011/65/EU (Compliant)
- REACH SVHC (Compliant)
- Halogen‑free (IEC 61249-2-21)
- Conflict minerals reporting (available upon request)
- AEC-Q100 Grade 2/3 options available (contact Microchip)
📦 Packaging & Logistics
- Tape & Reel: 3,000 pieces per 13" reel (SOT‑23‑5)
- Cut tape / bulk packaging available for prototyping
- Moisture Sensitivity Level: MSL 1 (unlimited floor life)
- Lead finish: NiPdAu or Sn (100% matte tin)
- Lead time: 12 weeks ARO (typical), stock available through distributors
FAQ
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.30800 | $0.31 |
| 3000+ | $0.25520 | $765.60 |
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