The recommended operating voltage range for the HEF4518BP is 4.5V to 15.5V, although it can operate down to 3V with reduced performance.
To ensure proper power-up and initialization, the VCC pin should be ramped up slowly (typically within 1ms) and the reset pin (MR) should be held low for at least 10ns after power-up.
The maximum frequency of operation for the HEF4518BP is 10MHz, although this can vary depending on the specific application and operating conditions.
The output enable (OE) pin should be tied low to enable the outputs, and high to disable them. When OE is high, the outputs are in a high-impedance state.
The maximum current that the HEF4518BP can sink or source is 20mA per output pin, although this can be limited by the specific application and operating conditions.