High-speed Isolation USB To TTL Serial Module Power Isolation Optocoupler Isolation 3.3V 5V TTL Output CH340 Module

Overview Optical isolation USB to TTL Serial Module Equipped with CH340T USB to serial chip achieved the power and TTL signal isolation High speed and stability it couldavoid the damage of USB and computer blue screen or other issues while use the USB to TTLserial port module due to improper operation or other external impact on the computer could improve the safety of debugging The function and characteristics 1 Onboard 500mA self recovery fuse and 5V isolated power supply module to protect the computer from damage2 Onboard stable CH340T USB to serial chip3 Serial TTL level through the optocoupler isolation fast up to 921600bps high reliability4 Output TX RX end with protection diode function can improve the impact resistance5 Computer USB end and serial port output end realize complete electrical isolation6 Output TTL level can be set to 3 3V 5V7 Serial output maximum output current of 150mA8 The board size 55x26mmFeature 3 3V 5V Output supply voltage and TTL level switching pin VCC GND Power supply output pin The TX RX GND and VCC pins of the serial port module are connected to the RX TX GND and VCC pins of the user equipment When the isolated serial port module VCC pin with a jumper cap 5V the output 5V TTL level and power supply voltage while VCC pin with 3 3V jumper cap the output level of 3 3V TTL and power supply voltage The following is an example of usingthe isolated serial interface module to debug the 3 3V ESP8266 module Wi