I'm trying to produce a signal using a 74HC93 that pulses high every 8th bit while the "SELECTOR" signal is low. The "SELECTOR" signal is 24 clock cycles.
It works fine at 4 MHz, but when the frequency is increased to 10 MHz the output is not what is desired, and it pulses at weird times.
The output I'm getting at 10 MHz (blue):
The expected output (blue) is something like:
74HC93 - counter
74HC08 - AND gate
74HC14 - inverter
Input voltage of 3 V
Clock frequency 10 MHz (same circuit works at 4 MHz)