For reliable operation at all data rates and supply voltages, each supply should be decoupled with a ceramic capacitor located as close to the supply pins as possible. Recommended bypass capacitor for V_CC is 1 μF, for V_IO is 100 nF, for V+, V- charge pump voltage supplies is 100 nF. Besides this, two charge pump flying capacitors of 100 nF each are needed between C1+, C1- terminals and between C2+, C2- terminals. For V_CC = 3.3V ±10%, V+ and V- voltages are regulated to +5.5V and -5.5V typically. If an application needs larger RS-232 output voltages, V_CC = 5V ± 10% is recommended because V+ and V- are regulated to ±9.5V.