The SN74AHCT1G125DBVR is a single Bus Buffer Gate/Line Driver with 3-state output. The output is disabled when the output-enable (OE) input is high. When OE is low, data is passed from the A input to the Y output. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor and the minimum value of the resistor is determined by the current-sinking capability of the driver.