View 74lvc646a 3 datasheet:

INTEGRATED CIRCUITS 74LVC646A Octal bus transceiver/register (3-State) Product specification 2000 Jun 21 Supercedes data of 1998 Jul 29 IC24 Data Handbook Philips Semiconductors Philips Semiconductors Product specification Octal bus transceiver/register (3-State) 74LVC646A for multiplexed transmission of data directly from the internal FEATURES registers. Data on the ‘A’ or ‘B’ bus will be clocked in the internal • Wide supply voltage range of 1.2 V to 3.6 V registers, as the appropriate clock (CPAB or CPBA) goes to a HIGH • Flow-through pin-out architecture logic level. Output enable (OE) and direction (DIR) inputs are provided to control the transceiver function. In the transceiver mode, • In accordance with JEDEC standard no. 8-1A data present at the high-impedance po