具有清零和预置端的双路正边沿触发式 D 型触发器
| Number of channels (#) | 2 |
| Technology Family | ACT |
| Supply voltage (Min) (V) | 4.5 |
| Supply voltage (Max) (V) | 5.5 |
| Input type | TTL-Compatible CMOS |
| Output type | Push-Pull |
| Clock Frequency (Max) (MHz) | 100 |
| IOL (Max) (mA) | 24 |
| IOH (Max) (mA) | -24 |
| ICC (Max) (uA) | 20 |
| Features | Balanced outputs, Very high speed (tpd 5-10ns), Positive input clamp diode |
- 4.5-V to 5.5-V VCC Operation
- Inputs Accept Voltages to 5.5 V
- Max tpd of 10.5 ns at 5 V
- Inputs Are TTL-Voltage Compatible
The ?ACT74 dual positive-edge-triggered devices are D-type flip-flops.
A low level at the preset (PRE)\ or clear (CLR)\ input 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 D can be changed without affecting the levels at the outputs.
