Abstract
Aiming at the problems of using optocouplers to achieve logic level matching in the current communication circuit, there are many components, high cost, and high requirements for component parameters. Based on the basic requirements of circuit logic level matching, this paper combines The research on the basic principle of triode switch, using the Schottky diode’s unidirectional conduction and low conduction voltage drop characteristics, introduces a logic level matching circuit for inter-module communication with switch isolation function in communication circuits. Through the verification of relevant experiments such as functionality, stability and reliability, the circuit has a simple structure and stable performance, and is very suitable for use in communication circuits between modules of different voltage levels.
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