54B65 is an integrated circuit chip model, its pin function is described as follows:
1. 20VCC is the power supply end, used to provide a positive voltage of 5V.
2. 19GND is a ground end and needs to be grounded.
3. 18-1Y is the output terminal, and its output is high or low.
4. 17-2Y is the output terminal, and its output is high or low.
5. 16-3Y is the output terminal, and its output is high or low.
6. 15D is the data input terminal, which needs to be connected to a high or low level.
7. 14-4Y is the output terminal, and its output is high or low.
8. 13-5Y is the output terminal, and its output is high or low.
9. 12-6Y is the output terminal, and its output is high or low.
10. 11-7Y is the output terminal, and its output is high or low.
11. 10-8Y is the output terminal, and its output is high or low.
12. 9OE is the output enable end. When OE input is low, output Y is effective. OE input high voltage, output Y is invalid, is a high resistance state, its effective role is to control the output of the enable.
It should be noted that the specific wiring and use methods need to be determined according to the specific circuit design and application.