Low-voltage 2Kbit I²C EEPROM for 1.8V logic domains
The Microchip 24VL025T/ST is a 2Kbit serial EEPROM with an I²C interface, organized as 256 x 8 bits. Its defining characteristic is the 1.5V to 3.6V supply range, which makes it one of the few EEPROMs that operate cleanly down to 1.5V — essential for designs running on 1.8V logic or single-cell battery supplies. The 400 kHz clock and 900 ns access time are standard for this density, but the low-voltage headroom is what sets this part apart from the 24LC series.
Supply voltage: 1.5V to 3.6V — the key differentiator
The 24VL025T/ST operates from 1.5V to 3.6V, covering 1.8V, 2.5V, and 3.3V rails without a separate level shifter. The 24LC025T-I/ST (a common peer) requires a minimum of 2.5V, so the 24VL series is the drop-in choice when the MCU runs at 1.8V or the battery voltage sags below 2V. No other parametric difference in access time, clock speed, or write cycle time — the delta is purely the supply floor.