SN74ACT74是TI公司的一款D类触发器产品，SN74ACT74是具有清零和预设功能的二路上升沿 D 类触发器，本页介绍了SN74ACT74的产品说明、应用、特性等，并给出了与SN74ACT74相关的TI元器件型号供参考。
SN74ACT74 - 具有清零和预设功能的二路上升沿 D 类触发器 - D类触发器 - 触发器/锁存器/寄存器 - TI公司（Texas Instruments，德州仪器）
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.
- 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
