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ICStation Unidirectional Electronic Level Conversion Module

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        We usually have voltage matching problems when we design the circuit because the circuit does not only have one electronic level signal, most of the level include 3.3V, 5V or 12V. While this unidirectional electronic level conversion module can achieve the switch from 3.3V to 5V/12V, 5V to 3.3V/12V, 12V to 3.3V/5V

1.Circuit introduction

The circuit is very simple, it is consist of 2 transistors and 4 resistors.

Input the signal from the Uin, when the Uin is under high level, the Q1 will breakover,the level of the node 3 will be lower, the Q21 will be cut-off and the Uout will output high level. When the Uin is under low level, the Q1 is cut-off, the node 3 is the VDD, and the Q2 will be breakover, the Uout output low level.



Working voltage:3~24V

PCB Size: 22*26mm

3. Usage introduction

This module can achieve the voltage switch from 3.3V to 5V/12V, 5V to 3.3V/12V, 12V to 3.3V/5V, it is usually used as the link of two equipments with different working voltage, for example, use the arduino to control the 12V relay module, the wiring diagram is as following:



      4.Schematic diagram


5.Mechanical drawing



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ICStation Unidirectional Electronic Level Conversion Module
$3.44 $1.55