设计了一种串行数据测试工具,它采用PL-2303HX作USB接口的数据转换芯片,并通过工业通信接口芯片MAX232和MAX485把串行数据转换成RS232和RS485通信总线接口,实现了UART-TTL、RS232、RS485数据总线三合一的通用调试工具。
1GND 20 EN 2Vref_A 19 Vref_B 3A1 18 B1 4A2 17 B2 5A3 16 B3 6A4 15 B4 7A5 14 B5 8A6 13 B6 9A7 12 B7 10A8 11 B8 Copyright ? 2016, Texas Instruments Incorporated Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matt