Description

The AX3111ESA is an electronic component model categorized as IC chips. It is a full-featured universal asynchronous receiver/transmitter (UART) combined with ±15kV ESD-protected RS-232 transceivers and integrated charge-pump capacitors into a single 28-pin package. This model is suitable for space-, cost-, and power-constrained applications. It also features an SPI/QSPI/MICROWIRE-compatible serial interface that saves additional board space and µC I/O pins.

Specifications and 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

Application Scenarios

The AX3111ESA electronic component model is designed for use in space-, cost-, and power-constrained applications that require a full-featured universal asynchronous receiver/transmitter (UART) combined with ±15kV ESD-protected RS-232 transceivers and integrated charge-pump capacitors into a single 28-pin package.

Comparison

• The integrated UART and RS-232 transceivers in a single package save board space.
• The SPI/QSPI/MICROWIRE-compatible µC interface saves additional microcontroller I/O pins.
• The internal charge-pump capacitors eliminate the need for external components.
• True RS-232 operation down to VCC = +3V (MAX3111E).
• The ESD protection of the RS-232 I/O pins is up to ±15kV (human body model).
• Guaranteed 230kbps data rate.
• Hardware/software-compatible with MAX3100 and MAX3222E.

• Supply voltage requirement is limited to either +5V (MAX3110E) or +3.3V (MAX3111E).
• Low supply current of 600µA.
• Shutdown supply current of 10µA with receiver interrupt active.