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IN74HC161A 参数 Datasheet PDF下载

IN74HC161A图片预览
型号: IN74HC161A
PDF下载: 下载PDF文件 查看货源
内容描述: 预置计数器高性能硅栅CMOS [Presettable Counters High-Performance Silicon-Gate CMOS]
分类和应用: 计数器
文件页数/大小: 10 页 / 384 K
品牌: IKSEMICON [ IK SEMICON CO., LTD ]
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IN74HC161A  
VCC=Pin 16  
GND=Pin 8  
The flip-flops shown in the circuit diagrams are Toggle-Enable flip-flops. A Toggle-Enable flip-flop is a  
combination of a D flip-flop and a T flip-flop. When loading data from Preset inputs P0, P1, P2, and P3, the Load  
signal is used to disable the Toggle input (Tn) of the flip-flop. The logic level at the Pn input is then clocked to the Q  
output of the flip-flop on the next rising edge of the clock.  
A logic zero on the Reset device input forces the internal clock (C) high and resets the Q output of the flip-flop  
low.  
Figure 7.Expanded logic diagram  
Rev. 00