Description
PC Serial port interface for microcontrollers
FEATURES
Meets or Exceeds TIA/RS-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 250 kbit/s
Two Drivers and Two Receivers
±30-V Input Levels
Low Supply Current . . . 8 mA Typical
ESD Protection for RS-232 Bus Pins
±15-kV Human-Body Model (HBM)
±8-kV IEC61000-4-2, Contact Discharge
±15-kV IEC61000-4-2, Air-Gap Discharge
APPLICATIONS
TIA/RS-232-F
Battery-Powered Systems
Terminals
Modems
Computers
DESCRIPTION
The MAX232E is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/RS-232-F
voltage levels from a single 5-V supply. Each receiver converts TIA/RS-232-F inputs to 5-V TTL/CMOS levels.
This receiver has 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/RS-232-F levels. The driver, receiver, and voltage-generator
functions are available as cells in the Texas Instruments LinASIC library.
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