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SN74HC4040: SN74HC4040的仿真

Part Number: SN74HC4040
Other Parts Discussed in Thread: SN74HCS10

我想在Tina里构建SN74HC4040的电路,基本思路是用T‘触发器来构建。我选择了4个3转1的与非门做了T’触发器,用来模拟SN74HC4040的第一路的数字输出(Q0输出),但是在“Transient”仿真模式下,进度条跑到60%就跑不动了。我不清楚是与非门选的不对,还是输入信号的激励给的不对,请帮忙分析下。谢谢!