1. The interior of the 331 chip is cross-coupled by two NAND gates. 2. This cross-coupled design can realize a variety of logic functions, such as AND, OR, NOT, etc., while also reducing the number of transistors in the circuit and improving the performance and reliability of the chip. 3. In addition to 331 chips, the design of NAND gate cross-coupling is also widely used in digital circuits, which can realize complex logic functions and optimize circuit performance.
331 chip internal support is DC and AC coupling.