Datasheet MAX220-MAX249 (Maxim) - 10

MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers
Typical Operating Characteristics MAX225/MAX244–MAX249 TRANSMITTER OUTPUT VOLTAGE (V+, V-) TRANSMITTER SLEW RATE OUTPUT VOLTAGE vs. LOAD CAPACITANCE AT vs. LOAD CAPACITANCE vs. LOAD CURRENT FOR V+ AND V- DIFFERENT DATA RATES
18 10 9.0 V V CC = +5V WITH ALL TRANSMITTERS DRIVEN CC = +5V 8 LOADED WITH 5kΩ 16 8.5 MAX220-10 V+ AND V- LOADED MAX220-11 MAX220-12 μs) 10kb/s 6 EITHER V+ OR 14 8.0 20kb/s EXTERNAL POWER SUPPLY 4 V- LOADED VCC = +5V 12 1μF CAPACITORS 2 EXTERNAL CHARGE PUMP 7.5 40kb/s 1μF CAPACITORS 10 0 8 TRANSMITTERS 7.0 60kb/s 40kb/s DATA RATE DRIVING 5kΩ AND V+, V- (V) 8 8 TRANSMITTERS -2 2000pF AT 20kb/s 6.5 LOADED WITH 3kΩ OUTPUT VOLTAGE (V) -4 V- LOADED 6 6.0 100kb/s TRANSMITTER SLEW RATE (V/ -6 V+ AND V- LOADED 200kb/s 4 5.5 -8 V+ LOADED ALL CAPACITIORS 1μF 2 -10 5.0 0 1 2 3 4 5 0 5 10 15 20 25 30 35 0 1 2 3 4 5 LOAD CAPACITANCE (nF) LOAD CURRENT (mA) LOAD CAPACITANCE (nF) www.maximintegrated.com Maxim Integrated | 10