MAX232

MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers General Description The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available. The MAX225, MAX233, MAX235, and MAX245/MAX246/ MAX247 use no external components and are recommended for applications where printed circuit board space is critical. The MAX220-MAX249 are offered in 26 different packages with temperatures from 0 to +70°C up to -55°C to +125°C. See ordering information table at the end of the data sheet for all package and temperature options. Applications Interface Translation Multidrop RS-232 Networks Portable Diagnostics Equipment AutoShutdown and UCSP are trademarks of Maxim Integrated Products, Inc. Benefits and Features Saves Board Space Integrated Charge Pump Circuitry Eliminates the Need for a Bipolar ±12V Supply Enables Single Supply Operation from +5V Supply Integrated Capacitors (MAX223, MAX233, MAX235, MAX245-MAX247) Saves Power for Reduced Power Requirements 5µW Shutdown Mode Ordering Information and Selection Table appears at end of data sheet. MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit TOP VIEW + C1+ 1 V+ 2 C1- 3 C2+ 4 C2- 5 V- 6 MAX220 MAX232 MAX232A T2OUT 7 R2IN 8 16 VCC 15 GND 14 T1OUT 13 R1IN 12 R1OUT 11 T1IN 10 T2IN 9 R2OUT DIP/SO CAPACITANCE (μF) DEVICE C1 C2 C3 C4 C5 MAX220 0.047 0.33 0.33 0.33 0.33 MAX232 ...