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 |
|---|
| OE | DIR | A PORT | B PORT |
|---|
| 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.