Table 7-1 lists the functional modes of the SN74AVC4T774-Q1 device.
Table 7-1 Function Table (Each Bit)CONTROL INPUTS | OUTPUT CIRCUITS(1) | OPERATION |
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OE | DIR | A PORT | B PORT |
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L | L | Enabled | Hi-Z | B data to A bus |
L | H | Hi-Z | Enabled | A data to B bus |
H | X | Hi-Z | Hi-Z | Isolation |
(1) Input circuits of the data I/Os are always active.