hmc747

我买了一个HMC747的D触发器的开发板,根据芯片的datasheet,它应该是边沿触发的,但是我在做测试的时候发现,它似乎是电平触发。具体内容如下:1,我输入高电平3.1V给CP,CN悬空,这个状态一直保持着,DP输入一个1MHZ的方波信号,结果QP输出1MHZ的方波信号。 2.我输入高电平3.1V给CP,输入低电平2.0V给CN,一直保持这个状态,DP输入一个1MHZ的方波信号,结果QP输出1MHZ的方波信号。 3.我输入低电平2.0V给CP,CN悬空,一直保持这个状态,DP输入一个1MHZ的方波信号,QP低电平保持不变。 请给予我回复,谢谢

I bought a HMC747 D flip-flop development board. According to the chip's datasheet, it should be edge triggered, but when I was doing the test, I found that it seemed to be level triggered. The details are as follows: 1. I input a high level of 3.1V to CP, and CN is left floating. This state has been maintained. DP inputs a 1MHZ square wave signal, and QP outputs a 1MHZ square wave signal. 2. I input a high level of 3.1V to CP and a low level of 2.0V to CN. This state has been maintained. DP inputs a 1MHZ square wave signal, and QP outputs a 1MHZ square wave signal. 3. I input low level 2.0V to CP, CN is left floating, and keeps this state, DP input a 1MHZ square wave signal, QP low level remains unchanged.

Please give me a reply, thank you