The SN74AVCH8T245 is an 8-bit, dual supply noninverting bidirectional voltage level translator. Pins A1 through A4, and the control pins (DIR and OE) are referenced to V_CCA, while pins B1 through B4 are referenced to V_CCB. Both the A port and B port can accept I/O voltages ranging from 1.2V to 3.6V. With OE set to low, a high on DIR allows data transmission from Port A to Port B, and a low on DIR allows data transmission from Port B to Port A. When OE is set to high, both Port A and Port B outputs are in the high-impedance state. For more information, see AVC Logic Family Technology and Application.