24AA256-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 24AA256-I/SN is a 256 Kbit I2C EEPROM from Microchip in SOIC-8 package. It operates at up to 400 kHz clock frequency and supports 1,000,000 write/erase cycles with 200-year data retention. Ideal for embedded systems requiring non-volatile data storage.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24AA256-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8795(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 256 Kbit (32 KB) I2C serial EEPROM with up to 400 kHz fast-mode operation
- Endurance rated at 1,000,000 write/erase cycles for high-reliability applications
- SOIC-8 package with industrial temperature range (-40°C to +85°C) and RoHS-compliant construction
Applications
The 24AA256-I/SN is widely used in embedded systems for storing configuration data, calibration parameters, and firmware settings. It suits consumer electronics, industrial control panels, and medical devices where reliable non-volatile memory in a compact SOIC-8 footprint is required. Its 400 kHz I2C interface enables seamless integration with microcontrollers across automotive and IoT applications.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 0.4MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010DDDR |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 262144bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 32768words |
| Number of Words Code | 32000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 32KX8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 2.5V |
| Qualification Status | Not Qualified |
| Reverse Pinout | NO |
| Screening Level | AEC-Q100 |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000005A |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE |
| 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 24AA256-I/SN:
suggested
suggested
suggested
Frequently Asked Questions
What clock frequency does the 24AA256-I/SN support, and how does it affect data transfer speed?
The 24AA256-I/SN supports a maximum clock frequency of 400 kHz in fast-mode I2C operation. At 400 kHz, byte transfers complete in approximately 2.5 µs per clock cycle, enabling efficient communication in time-sensitive embedded applications across a 1.7 V to 5.5 V supply range.
How many write cycles can the 24AA256-I/SN handle before wear becomes a concern?
The 24AA256-I/SN is rated for 1,000,000 write/erase cycles per memory location, providing excellent endurance for frequent write operations. Combined with a minimum 200-year data retention spec and 8-byte page write buffer, it suits applications requiring periodic configuration updates over the product lifetime.
Which industrial or automotive designs benefit most from the 24AA256-I/SN in the SOIC-8 package?
The 24AA256-I/SN in SOIC-8 is well suited for industrial control systems, automotive ECUs, and medical instrumentation operating across -40°C to +85°C. Its 32 KB capacity at 5 V or 3.3 V covers typical calibration tables, event logs, and system settings without requiring larger Flash or FRAM alternatives.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1557 | $1.16 |
| 2+ | $0.8795 | $1.76 |
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