The 74LVC245A; 74LVCH245A is an 8-bit transceiver with 3-state
outputs. The device features an output enable (OE) and send/receive
(DIR) for direction control. A HIGH on OE causes the outputs to
assume a high-impedance OFF-state. Inputs can be driven from either
3.3 V or 5 V devices. This feature allows the use of these devices
as translators in mixed 3.3 V and 5 V environments. Schmitt-trigger
action at all 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.
