The SN75LV4735 is a low-power 3.3-V multichannel RS-232 line driver/receiver. It includes three independent RS-232 drivers and five independent RS-232 receivers. It is designed to operate off a single 3.3-V supply and has an internal switched-capacitor voltage converter to generate the RS-232 output levels. The SN75LV4735 provides a single chip, single 3.3-V supply interface between the asynchronous communications element (ACE or UART) and the serial-port connector of the data terminal equipment (DTE). This device has been designed to conform to standard ANSI EIA / TIA-232-E. The switched-capacitor voltage converter of the SN75LV4735 uses five small external capacitors to generate the positive and negative voltages required by EIA / TIA-232-E line drivers from a single 3.3-V input. The drivers feature output slew-rate limiting to eliminate the need for external filter capacitors. The receivers can accept 30 V without damage.