CH347T Dual-Channel High-Speed ​​Isolated Serial Port

This project has been verified
 
. Key features include:
1. A high-speed USB adapter chip (CH347) converts the output to two high-speed serial ports, solving the problem of connecting multiple serial port modules during debugging of multi-chip embedded devices.
2. Version V1 uses the TXB0104 bidirectional level converter chip to achieve various serial port output level conversions, supporting 1.8, 2.5, and 3.3 GHz serial port levels, adapting to various embedded chips.
3. Output terminals can be soldered with 2.54mm header pins or directly wired to meet various needs.
4. Both USB inputs (D+, D-) and output terminals (TX, RX) are protected, significantly improving durability and stability.
5. A TYPE-C interface allows for easy extension via a mobile phone data cable (I have a lot of data cables, so I'll use up my inventory!).
6. Version V2 uses a digital isolator with power isolation to achieve complete isolation between the device's serial port and power supply (not because ISOW7742 is too expensive, but because domestic options are more cost-effective). 7. Version
V2's form factor is based on the CC-Debugger's casing design, which can be directly applied without additional design.
 
Core Architecture (Pure Hardware)
: USB to Serial Chip: CH347
V1; Level
Shifter Chip: TXB0104
V2 (Recommended);
Dual-Channel Chip with Power Isolation: CA-IS3642HW