The SN74HC574DW can handle clock frequencies up to 100 MHz.
To ensure that the outputs are in a known state during power-up, connect the OE (output enable) pin to GND or use an external pull-down resistor to force the outputs low during power-up.
The recommended operating voltage range for the SN74HC574DW is 2V to 6V, with a typical operating voltage of 5V.
The asynchronous clear (CLR) input should be synchronized with the clock signal to ensure proper operation. A low-going pulse on the CLR input will clear the registers, regardless of the clock signal.
The SN74HC574DW can drive up to 50 pF of capacitance per output pin.