Table 7-1 describes the SNx4LVC74A functionality and interactions between the
PRE,
CLR, CLK, and D inputs.
Table 7-1 Function TableINPUTS | OUTPUTS |
---|
PRE | CLR | CLK | D | Q | Q |
---|
L | H | X | X | H | L |
H | L | X | X | L | H |
L | L | X | X | H(1) | H(1) |
H | H | ↑ | H | H | L |
H | H | ↑ | L | L | H |
H | H | L | X | Q0 | Q0 |
(1) This configuration is nonstable; that is, it does not persist when
PRE or
CLR returns to its inactive (high) level.