The recommended operating voltage range for CD4520BEE4 is 4.5V to 5.5V, although it can operate from 3V to 18V with reduced performance.
To ensure proper power sequencing, apply power to the VCC pin before applying any input signals, and ensure that the input signals are stable before applying power to the VCC pin.
The maximum clock frequency that CD4520BEE4 can handle is 100 kHz, although it can operate at higher frequencies with reduced performance and increased power consumption.
The output enable (OE) pin is active-low, meaning that the outputs are enabled when OE is low and disabled when OE is high. Connect OE to VCC or a logic high to disable the outputs.
The VEE pin is the negative supply voltage pin, which is typically connected to ground (GND) in most applications. It is used to set the voltage reference for the device.