The I74F74D can handle clock frequencies up to 100 MHz, but it's recommended to operate it at 50 MHz or lower for reliable operation.
To ensure proper initialization, connect the preset (PRE) and clear (CLR) inputs to VCC or GND, respectively, through a pull-up or pull-down resistor. This will set the flip-flops to a known state during power-up.
The recommended operating voltage range for I74F74D is 4.5V to 5.5V, with a typical voltage of 5V. Operating outside this range may affect the device's performance and reliability.
While the I74F74D is not officially specified for 3.3V operation, it may still work in a 3.3V system. However, the device's performance and reliability may be compromised, and it's not recommended for new designs. Consider using a 3.3V-compatible alternative instead.
The preset and clear inputs are asynchronous, meaning they can be triggered at any time, regardless of the clock signal. To avoid unintended behavior, ensure that these inputs are synchronized with the clock signal or use them only during initialization or reset sequences.
