CAT24C256WI-GT3

• 256kb density, 32kB of Storage Across 32, 000 Words
• I2C Two-Wire Serial Interface at Up to 400k Hz
• Wide 1.8V to 5.5V Supply range, 5V Nominal
• 3mA Nominal Supply Current
• 8-Pin SOIC package, 5mm X 4mm X 1.5mm, Surface Mount
• Gold Contact Plating
• Industrial -40C to 85C Operating Range
• Lead Free and RoHS compliant; Tape and Reel

The CAT24C256WI-GT3 is an onsemi 256kb serial EEPROM providing 32kB of nonvolatile storage across 32, 000 words, accessed over a two-wire I2C bus at up to 400k Hz. It operates from a wide 1.8V to 5.5V supply, drawing 3mA nominal, and is rated across an industrial -40C to 85C range. The device is supplied in an 8-pin SOIC measuring 5mm x 4mm x 1.5mm with gold contact plating, is lead free and RoHS compliant, in current production, and shipped on tape and reel.

Serial EEPROM is the small nonvolatile store a design uses for data that has to survive power cycles but is written far less often than it is read: calibration constants, serial numbers and board identity, configuration and user settings, fault and event logs, and firmware parameters. Two attributes make the CAT24C256WI-GT3 broadly usable, the 1.8V to 5.5V supply range, which lets one part serve both low-voltage and 5V logic domains, and the -40C to 85C industrial rating. It appears in industrial controllers and sensors, consumer and office equipment, appliances, medical devices, networking hardware, and automotive-adjacent modules. Buyers are OEM embedded design teams and contract manufacturers ordering to production run rates.