Electronic Integrated Circuit Chip IC MAX232DR DUAL EIA-232 Drivers / Receivers

Electronic Integrated Circuit Chip IC MAX232DR DUAL EIA-232 Drivers / Receivers

MAX232DR DUAL EIA-232 DRIVERS/RECEIVERS

Meets or Exceeds TIA/EIA-232-F and ITU Recommendation V.28

Operates From a Single 5-V Power Supply With 1.0-F 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 J

ESD 22 − 2000-V Human-Body Model (A114-A)

Upgrade With Improved ESD (15-kV HBM) and 0.1-F Charge-Pump Capacitors is Available With the MAX202

Applications − TIA/EIA-232-F, Battery-Powered Systems, Terminals, Modems, and Computers

description/ordering information

The MAX232 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. The driver, receiver, and voltage-generator functions are available as cells in the Texas Instruments LinASIC library.

logic diagram (positive logic)

APPLICATION INFORMATION

† C3 can be connected to VCC or GND. NOTES: A. Resistor values shown are nominal. B. Nonpolarized ceramic capacitors are acceptable. If polarized tantalum or electrolytic capacitors are used, they should be connected as shown. In addition to the 1-µF capacitors shown, the MAX202 can operate with 0.1-µF capacitors.

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