Hi team,
It is nice to know you here. My customer used SN74HC164 to drive LED, schematic as below. When my customer input the 10101010 to LED_D0 pin, they find that sometimes QH is low at the 8th rising edge of CLK (three device found such issue). Could you please help share with me what may cause such an issue? Thanks.
BR,
Charles Lin
The right waveform of CLK/D0/QH
The wrong waveform of CLK/D0/QH