The maximum frequency of the clock signal is 30 MHz, but it can be limited by the rise and fall times of the clock signal and the capacitive load on the clock line.
Use a flyback diode or a freewheeling diode in parallel with the inductive load to absorb the back-EMF and prevent damage to the output pins.
The maximum current that can be sourced or sunk by each output pin is 100 mA, but it is recommended to limit the current to 50 mA or less to ensure reliable operation.
The shift register can be reset to a known state by asserting the MR (Master Reset) pin low for at least 50 ns. This will clear all the output registers and set them to a low state.
Yes, the TPIC6C595PWG4 can be used to drive LEDs directly, but it is recommended to use a current-limiting resistor in series with each LED to prevent overcurrent and damage to the output pins.