Datasheet MAX220-MAX249 (Maxim)

MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers General Description Benefits and Features
The MAX220–MAX249 family of line drivers/receivers is Saves Board Space intended for all EIA/TIA-232E and V.28/V.24 communica-
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tions interfaces, particularly applications where ±12V is Integrated Charge Pump Circuitry not available. • Eliminates the Need for a Bipolar ±12V Supply The MAX225, MAX233, MAX235, and MAX245/MAX246/ • Enables Single Supply Operation from +5V Supply MAX247 use no external components and are
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Integrated Capacitors (MAX223, MAX233, MAX235, recommended for applications where printed circuit board space is critical. MAX245-MAX247) The MAX220-MAX249 are offered in 26 different pack- Saves Power for Reduced Power Requirements ages with temperatures from 0 to +70°C up to -55°C to
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5µW Shutdown Mode +125°C. See ordering information table at the end of the data sheet for all package and temperature options.
Ordering Information and Selection Table appears at end Applications of data sheet. •
Interface Translation
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Multidrop RS-232 Networks
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Portable Diagnostics Equipment AutoShutdown and UCSP are trademarks of Maxim Integrated Products, Inc.
MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit
+5V INPUT C3 TOP VIEW C5 16
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C1+ V 1 1 16 V CC 2 CC C1+ V+ +10V C1 +5V TO +10V 3 V+ 2 15 GND C1- VOLTAGE DOUBLER 4 C2+ 6 C1- -10V 3 14 T1OUT +10V TO -10V V- C2 5 C2- VOLTAGE INVERTER C4 C2+ 4 MAX220 13 R1IN MAX232 +5V C2- 5 12 MAX232A R1OUT 400kΩ T1IN T1OUT V- 11 14 6 11 T1IN +5V T2OUT 7 10 T2IN TTL/CMOS RS-232 INPUTS 400kΩ OUTPUTS R2IN 8 9 R2OUT 10 T2IN T2OUT 7
DIP/SO
12 R1OUT R1IN 13 TTL/CMOS
CAPACITANCE (
5k RS-232 μ
F)
Ω OUTPUTS INPUTS
DEVICE
C1 C2 C3 C4 C5 9 R2OUT R2IN 8
MAX220
0.047 0.33 0.33 0.33 0.33
MAX232
1.0 1.0 1.0 1.0 1.0 5kΩ
MAX232A
0.1 0.1 0.1 0.1 0.1 GND 15 19-4323; Rev 17; 1/15