SN74LVC8T245 Dual Supply Bus Transceiver Texas Instruments SN74LVC8T245 Dual Supply Bus Transceiver uses two separate configurable power-supply rails and is optimized to operate with VCCA and VCCB set at 1.65V to 5.5V. The TI SN74LVC8T245 dual supply bus transceiver is designed for asynchronous communication between two data buses. The Texas Instruments SN74LVC8T245 dual supply bus transceiver 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. The VCC isolation feature ensures that if either VCC input is at GND, all outputs are in the high-impedance state.