The SN74LVC8T245RHLR is a non-inverting 8-bit dual-supply Bus Transceiver with configurable voltage-level shifting and three-state outputs. The SN74LVC8T245 is optimized to operate with VCCA and VCCB set. The A-port is designed to track VCCA. The B-port is designed to track VCCB. The SN74LVC8T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A to B-bus when the B-port outputs are activated and from the B to A-bus when the A-port outputs are activated. The input circuitry on both A and B-ports is always active and must have a logic high or low level applied to prevent excess ICC and ICCZ. The SN74LVC8T245 is designed so that the control pins (DIR and OE) are supplied by VCCA.
Control inputs VIH/VIL levels are referenced to VCCA voltage
If either VCC input is at GND, it is in the high-impedance state
(EN)
