单施密特触发缓冲器 SINGLE SCHMITT-TRIGGER BUFFER
The is a single Schmitt-trigger Buffer with 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.