The 74LVC1G17GW,125 is a single Schmitt trigger Buffer capable of transforming slowly changing input signals into sharply defined outputs. The input can be driven from either 3.3/5V devices. This feature allows the use of this device in a mixed 3.3 and 5V environment. This device is fully specified for partial power-down applications using IOFF. The IOFF circuitry disables the output, preventing the damaging backflow current through the device when it is powered down.
The SN74LVC1G17MDCKREP is an enhanced single Schmitt-trigger Buffer designed for 1.65 to 5.5V VCC operation. It contains one buffer and performs the Boolean function Y = A. The device functions as an independent buffer, but because of Schmitt action, it may have different input threshold levels for positive-going (VT+) and negative-going (VT-) signals. This device is fully specified for partial-power-down applications using IOFF. The IOFF circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.