General Description

The VHCT74A is an advanced high speed CMOS Dual D-Type Flip-Flop fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The signal level applied to the D INPUT is transferred to the Q OUTPUT during the positive going transition of the CK pulse. CLR and PR are independent of the CK and are accomplished by setting the appropriate input LOW.

Features

■ High speed: fMAX = 160MHz (Typ.) at TA = 25°C

■ High noise immunity: VIH = 2.0V, VIL = 0.8V

■ Power down protection is provided on all inputs and outputs

■ Low power dissipation: ICC = 2µA (Max.) at TA = 25°C

■ Pin and function compatible with 74HCT74

74VHCT74A属于集成电路（IC） > 触发器。安森美半导体公司制造生产的74VHCT74A触发器触发器是能够存储单个逻辑状态或信息“位”的基本数字存储器件。这些器件至少有两个输入；一个或多个用于传递要存储的数据，另一个用于指示存储该数据的时间点。不同的触发器类型，例如 D（延迟）、SR（置位复位）和 JK，对提供给其输入的信号有不同的响应，可用于实现不同的逻辑功能。这些器件与锁存器的不同之处在于它们是边缘敏感器件，其保持的逻辑状态仅在接收到有效时钟信号时才会改变。