The SN74LVCC4245APWR is an Octal Bus Transceiver with adjustable output voltage and 3-state outputs. This 8-bit non-inverting bus transceiver uses two separate power-supply rails. The A port, VCCA, is dedicated to accept a 5V supply level and the configurable B port, which is designed to track VCCB, accepts voltages from 3 to 5V. This allows for translation from a 3.3 to a 5V environment and vice versa. The SN74LVCC4245A is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The OE\ input can be used to disable the device so the buses are effectively isolated. The control circuitry (DIR, OE\\) is powered by VCCA.
Bidirectional voltage translator
Control inputs VIH/VIL levels are referenced to VCCA voltage