The maximum clock frequency for the 74HC595 is 25 MHz.
Yes, the 74HC595 can be used as a level shifter, but it's not recommended as it's not designed for that purpose. It's primarily intended for serial-to-parallel data conversion.
To ensure reliable data transfer, ensure that the clock signal is clean and has a fast rise and fall time. Also, use a pull-up resistor on the RCLK (clock) input to prevent clock signal degradation.
The maximum current rating for the output pins of the 74HC595 is 25 mA per pin.
Yes, the 74HC595 can operate with a supply voltage as low as 2V, but the output voltage levels may not be compatible with 3.3V logic. Ensure that the output voltage levels meet the requirements of your system.
74HC595DB,118 datasheet
by NXP Semiconductors
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