The SN74AUP1T34-Q1 device is a 1-bit noninverting translator that uses two separate
configurable power-supply rails. It is a unidirectional translator from A to B. The A port is
designed to track VCCA. VCCA accepts supply voltages
from 0.9 V to 3.6 V. The B port is designed to track VCCB. VCCB
accepts supply voltages from 0.9 V to 3.6 V. This allows for low-voltage translation
between 1-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. The SN74AUP1T34-Q1 is also 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.
The VCC isolation feature ensures that if VCCA input is at GND,
the B port is in the high-impedance state. If VCCB input is at GND, any
input to the A side does not cause the leakage current even floating.
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