74VHCT74ASJ集成電路（IC）的觸發(fā)器規(guī)格書PDF中文資料

74VHCT74ASJ屬于集成電路（IC）的觸發(fā)器。由安森美半導體公司制造生產(chǎn)的74VHCT74ASJ觸發(fā)器觸發(fā)器是能夠存儲單個邏輯狀態(tài)或信息“位”的基本數(shù)字存儲器件。這些器件至少有兩個輸入；一個或多個用于傳遞要存儲的數(shù)據(jù)，另一個用于指示存儲該數(shù)據(jù)的時間點。不同的觸發(fā)器類型，例如 D（延遲）、SR（置位復位）和 JK，對提供給其輸入的信號有不同的響應，可用于實現(xiàn)不同的邏輯功能。這些器件與鎖存器的不同之處在于它們是邊緣敏感器件，其保持的邏輯狀態(tài)僅在接收到有效時鐘信號時才會改變。

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