The TBATC-102 adapter provides the designer a low cost solution to change serial comport signals into CMOS/TTL level signals for prototype or testing of low level microprocessor or microcontroller based systems. The RS-232C side mates directly with a PC's DB-9 serial port connector. This makes the adapter a great solution for connecting external CMOS/TTL equipment being prototyped up to your PC or portable Computer. The adapters are powered by the host computer system's signal lines. This eliminates the need for an additional external power supply making the adapter an ideal choice for portable use.
High baud rates require more current than the serial port power can provide, the CMOS/TTL DB-9 connector can accept +5 to +12v DC at 50 milliamps to provide the added power to the adapter.