This part is a kind of semiconductor called MAX232.
Function of this product has Dual EIA-232 Drivers/Receivers (Rev. M).
Package : SOIC, DIP 16 Pin Type
Manufacturers : Texas Instruments
Image and pinout :

Some of the text within the PDF file :
The MAX232 device is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/EIA-232-F voltage levels from a single 5-V supply. Each receiver converts TIA/EIA-232-F inputs to 5-V TTL/CMOS levels. These receivers have a typical threshold of 1.3 V, a typical hysteresis of 0.5 V, and can accept ±30-V inputs. Each driver converts TTL/CMOS input levels into TIA/EIA-232-F levels.
Features:
Meets or Exceeds TIA/EIA-232-F and ITU Recommendation V.28
Operates From a Single 5-V Power Supply With 1.0-µF Charge-Pump Capacitors
Operates up to 120 kbit/s
Two Drivers and Two Receivers
±30-V Input Levels
Low Supply Current: 8 mA Typical
ESD Protection Exceeds JESD 22
2000-V Human-Body Model (A114-A)
Upgrade With Improved ESD (15-kV HBM) and 0.1-µF Charge-Pump Capacitors is Available With the MAX202 Device
Applications:
TIA/EIA-232-F
Battery-Powered Systems
Terminals
Modems
Computers
[ ... ]
MAX232 PDF Datasheet Download
