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74640
SEMSI
O74LS640-1, 74ALS640 1 Ii Iol 48mA O74ALS1640 1 Ii Iol 24mA
FUNCTION TABLE
CONTROL OPERATION
INPUTS 638 640 642 639 641 645 643
G DIR 644
L L 5 data lo A bus 8 data 10 A