The recommended operating voltage range for the HEF40193BT is 4.5V to 15.5V, although it can operate down to 3V with reduced performance.
To ensure proper power-on and power-off, make sure to follow the recommended power-up and power-down sequences, and use a bypass capacitor (e.g., 10uF) between VCC and GND to filter out noise and voltage spikes.
The maximum clock frequency that the HEF40193BT can handle is 10MHz, although it can operate at higher frequencies with reduced performance and increased power consumption.
The asynchronous reset input (MR) should be tied to VCC through a pull-up resistor (e.g., 1kΩ) to ensure proper reset operation. A low-going pulse on MR will reset the counter.
The HEF40193BT can be used as either a binary counter or a decade counter, depending on the connection of the Q3 and Q4 outputs. For binary counting, connect Q3 and Q4 to the next stage; for decade counting, connect Q3 to the next stage and Q4 to the reset input (MR).
