BUY MAX232EIN https://www.utsource.net/itm/p/6270377.html
The MAX232EIN is a RS-232 dual Driver/Receiver includes a capacitive voltage generator to supply TIA/RS-232-F voltage levels from a single 5V supply. Each receiver converts TIA/RS-232-F inputs to 5V TTL/CMOS levels. This receiver has a typical threshold of 1.3V, a typical hysteresis of 0.5V and can accept ±30V inputs. Each driver converts TTL/CMOS input levels into TIA/RS-232-F levels.
MAX232EIN is a dual driver/receiver IC manufactured by Texas Instruments. It is used to convert TTL/CMOS logic levels to RS232 logic levels. Description: The MAX232EIN is a dual driver/receiver that includes a capacitive voltage generator to supply EIA-232 voltage levels from a single 5-V supply. Each receiver converts EIA-232 inputs to 5-V TTL/CMOS levels. Features: Operates from a single 5-V supply Low power consumption Low shutdown current ±15-kV ESD protection on all pins Meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 Output slew rate limited for minimum EMI and improved data integrity Low supply current (8 mA) True fail-safe receiver Applications: PC and peripherals Point-of-sale terminals Modems Printers Industrial control systems Instrumentation Robotics (For reference only)