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SN74ALS990, SN74ALS991
8-BIT D TYPE TRANSPARENT READ-BACK LATCHES
D 2 8 3 5 , A P R IL 1 9 8 4 - R E V I S E D M A Y 1 9 8 6
S N 7 4 A L S 9 9 0 . . . D W OR N P AC KA G E
3-State I/O-Type Rea