Other Parts Discussed in Thread: STRIKE
I am using the SN74LVC1G57 configured as 2-input AND gate as part of a deadtime circuit. See the attached image for reference. Vcc is 5V. Two identical deadtime circuits are used: one for the HI side switch and another one for the LOW side switch.
Input A for the AND gate is always ON for purposes of this discusion. The depicted source is a square wave at 400 kHz. Deadtime is created by slowing only the rising edge through the RC constant. The falling edge is not affected due to diode. I was expecting deadtime ~105 ns since that's the amount of time it takes AND gate input B to reach ~2.4V which I approximated to be the positive-going input threshold voltage (Vt+). However, I am measuring a deadtime of 70 ns. Is my understanding of Vt+ incorrect? What's the Vt+ for Vcc = 5V? What could be causing the deadtime to be 70 ns instead of 105 ns?