The ’AHCT74 dual positive-edge-triggered
devices are D-type flip-flops.
A low
level at the preset ( PRE) or clear ( CLR) inputs
sets or resets the outputs, regardless of the levels of the other inputs. When
PRE and CLR are inactive (high), data at the
data (D) input meeting the setup time requirements is transferred to the outputs on the
positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is
not directly related to the rise time of the clock pulse. Following the hold-time interval,
data at the D input can be changed without affecting the levels at the outputs.
The ’AHCT74 dual positive-edge-triggered
devices are D-type flip-flops.
A low
level at the preset ( PRE) or clear ( CLR) inputs
sets or resets the outputs, regardless of the levels of the other inputs. When
PRE and CLR are inactive (high), data at the
data (D) input meeting the setup time requirements is transferred to the outputs on the
positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is
not directly related to the rise time of the clock pulse. Following the hold-time interval,
data at the D input can be changed without affecting the levels at the outputs.