e Level X = Immaterial l, h (q) = Lower case letters indicate the state of the referenced input (or output) one setup time prior to the HIGH-to-LOW clock transition 16 1 D SUFFIX SOIC CASE 751B-03 ORDERING INFORMATION SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC LOGIC DIAGRAM LOGIC SYMBOL .