The DS75176 is equivalent to the SN75176
Begone, hard-to-program USB devices! At the hands of my FT232RL chip, you will behave like a serial comm port!
he ST232 is a 2 driver, 2 receiver device following EIA/TIA-232 and V.28 communication standard.
The DTE RS-232 module is a tight and tidy way to convert RS-232 (computer-level) signals down to a microcontroller level signal strengths. DCE means it's configured as a "Data Communications Equipment" (with 9 holes).