The maximum clock frequency for the CD54HC4511F3A is 25 MHz, but it can operate up to 30 MHz with a reduced voltage supply (VCC) of 4.5V.
To ensure proper power sequencing, apply VCC before applying any input signals, and ensure that VCC is stable before applying the clock signal. Also, ensure that the VCC supply is ramped up slowly (typically within 10 ms) to prevent latch-up.
The recommended operating voltage range for the CD54HC4511F3A is 2V to 6V, with a typical voltage of 5V. Operating outside this range may affect the device's performance and reliability.
Unused inputs should be tied to VCC or GND through a 1 kΩ resistor to prevent floating inputs and reduce power consumption. This also helps to prevent latch-up and ensures proper device operation.
The maximum output current for the CD54HC4511F3A is 25 mA per output pin, with a total current limit of 100 mA for all outputs combined.
CD54HC4511F3A datasheet
