General Description
The MAX3110E/MAX3111E combine a full-featured uni versal asynchronous receiver/transmitter (UART) with
±15kV ESD-protected RS-232 transceivers and integrated charge-pump capacitors into a single 28-pin package for use in space-, cost-, and power-constrained applications. The MAX3110E/MAX3111E also feature an SPI™/QSPI™/MICROWIRE™-compatible serial interface to save additional board space and microcontroller (µC) I/O pins.

FEATUREs
♦Integrated RS-232 Transceiver and UART in a Single 28-Pin Package
♦SPI/QSPI/MICROWIRE-Compatible µC Interface
♦Internal Charge-Pump Capacitors—No External Components Required!
♦True RS-232 Operation Down to VCC= +3V (MAX3111E)
♦ESD Protection for RS-232 I/O Pins
  ±15kV—Human Body Model
  ±8kV—IEC 1000-4-2, Contact Discharge
  ±15kV—IEC 1000-4-2, Air-Gap Discharge
♦Single-Supply Operation
  +5V (MAX3110E)
  +3.3V (MAX3111E)
♦Low Power
  600µA Supply Current
  10µA Shutdown Supply Current with Receiver Interrupt Active
♦Guaranteed 230kbps Data Rate
♦Hardware/Software-Compatible with MAX3100 and MAX3222E