HD74HC74中文资料Dual D-type Flip-Flops (with Preset and Clear)数据手册HITACHI规格书

描述 Description

The flip-flop has independent data, preset, clear, and clock inputs and Q and Q outputs. The logic level present at thte data input is transferred to the output during the positive going transition to the clock pulse.
Preset and clear are independent of the clock and accomplished by a low level at the appropriate input.

特性 Features

• High Speed Operation: tpd (Clock to Q or Q) = 14 ns typ (CL = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 2 µA max (Ta = 25°C)