Contextual Info: OCTAL BU S T R A N S C E IV E R / R E G IS T E R TC74ACT646P M O N - IN V E R T I N G TC74,ACT648P IN V E R T IN G ; _ The TC74ACT646/ ACT648 are advaneed high speed-CMOS OCTAL BUS TRA N SCEIV ER/REG ISTER s fabricated t w ith silicon gate and dovb le-lay er m etal w iring C^MOS