M74HC74B1R集成电路（IC）的触发器规格书PDF中文资料

M74HC74B1R属于集成电路（IC）的触发器。由意法半导体集团制造生产的M74HC74B1R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。

DESCRIPTION

The M74HC74 is an high speed CMOS DUAL D TYPE FLIP FLOP WITH CLEAR fabricated with silicon gate C2MOS technology.

A signal on the D INPUT is transferred on the Q OUTPUT during the positive going transition of the clock pulse. CLEAR and PRESET are independent of the clock and accomplished by a low on the appropriate input. All inputs are equipped with protection circuits against static discharge and transient excess voltage.

■ HIGH SPEED : fMAX= 67MHz (TYP.) at VCC= 6V

■ LOW POWER DISSIPATION: ICC=2µA(MAX.) at TA=25°C

■ HIGH NOISE IMMUNITY: VNIH= VNIL= 28 VCC(MIN.)

■ SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL= 4mA (MIN)

■ BALANCED PROPAGATION DELAYS: tPLH ≅tPHL

■ WIDE OPERATING VOLTAGE RANGE: VCC(OPR) = 2V to 6V

■ PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 74