Description Boardoza PC817C 4CH Isolated Level Shifter is a four-channel signal isolation and voltage level translation module based on the Sharp PC817C optocoupler. Each channel provides galvanic isolation for safer communication between circuits operating at different voltage levels. The board supports 3.3V to 12V logic systems on both input and output sides and is suitable for signal isolation, industrial automation, PLC communication, and microcontroller logic interfacing. Features Four independent optically isolated channels Based on Sharp PC817C optocouplers Supports 3.3V - 12V input and output signal levels Unidirectional signal transmission for logic level shifting Galvanic isolation between input and output sides Designed for industrial control, PLC communication, and microcontroller interfaces Compact 40mm x 40mm breakout board Specifications Specification Parameter Model Sharp PC817C Manufacturer Sharp Corporation Function Isolated logic level shifting Number of Channels 4 Input Voltage Range 3.3V - 12V Input Current, per Channel ≤ 60 mA Output Voltage Range 3.3V - 12V Output Current, per Channel ≤ 50 mA Maximum Frequency 1.5 kHz Duty Cycle Variation +/-5% max Operating Temperature -55°C ~ +110°C Board Dimensions 40mm x 40mm Dimensions Interface Connector Pin Description J1 Power Supply VIN Voltage supply pin for output signal voltage level J1 Power Supply GND Reference ground of the signal output channels J2 Input Channel 1 IN1+ / IN1- External signal input and return ground for Channel 1 J3 Input Channel 2 IN2+ / IN2- External signal input and return ground for Channel 2 J4 Input Channel 3 IN3+ / IN3- External signal input and return ground for Channel 3 J5 Input Channel 4 IN4+ / IN4- External signal input and return ground for Channel 4 J6 Output Channel 1 OUT1 / GND Converted signal output and output reference ground for Channel 1 J7 Output Channel 2 OUT2 / GND Converted signal output and output reference ground for Channel 2 J8 Output Channel 3 OUT3 / GND Converted signal output and output reference ground for Channel 3 J9 Output Channel 4 OUT4 / GND Converted signal output and output reference ground for Channel 4 Applications Four-channel logic level shifting Signal isolation between different voltage domains Industrial automation signal conversion PLC communication interfaces Microcontroller and sensor signal protection Product List Quantity Item 1 Boardoza PC817C 4CH Isolated Level Shifter Resources Official GitHub Repository Sharp PC817C Datasheet PDF Boardoza PC817C 4CH STEP File FAQ How many isolated channels does this board provide? It provides four independent optically isolated channels. What voltage range does it support? It supports 3.3V to 12V on both the input and output sides. Is the signal transmission bidirectional? No. It is designed for unidirectional signal transmission. What is the maximum operating frequency? The maximum operating frequency is 1.5 kHz. What is the board size? The board dimensions are 40mm x 40mm.
