The 74CBTLV1G125 is a single high-speed line switch. The switch is disabled when the output enable (OE) input is high.
To ensure the high-impedance OFF-state during power-up or power-down, tie OE to the VCC through a pull-up resistor. The current-sinking capability of the driver determines the minimum value of the resistor.
Schmitt-trigger action at control inputs makes the circuit tolerant of slower input rise and fall times. This device is fully specified for partial power down applications using IOFF. The IOFF circuitry disables the output, preventing the potentially damaging backflow current through the device when it is powered down.