1.6 ft USB to TTL 3.3V 4pin serial FTDI cable. Connect directly to a microcontroller UART or I/O pins. Chip and power efficiency. The FT232RL provides a low operating supply current of 15 mA and a very low USB suspend current of about 70 uA. USB suspend guidance. During suspend mode, the current drawn by the application should not exceed 2.5 mA to remain USB compliant. Compatibility and interface. Designed for 3.3V TTL serial communication, suitable for direct connection to microcontrollers that use UART or 4pin TTL interfaces. Size and form factor. 1.6 ft length offers flexible placement in development setups and compact projects. Use scenarios Program microcontroller bootloaders or flash via UART using a 3.3V TTL serial connection. Debug and access serial console on a microcontroller during development and testing. Collect data from a microcontroller or sensor module and stream to a PC for logging or analysis. Reliability and purpose. Provides a straightforward USB to TTL serial interface driven by the FT232RL chip for development, debugging, and integration projects.