Description

The MAX3111ECWI+T is a UART (Universal Asynchronous Receiver Transmitter) electronic component model that combines a full-featured UART with an ESD-protected RS-232 transceiver and integrated charge-pump capacitors into a single 28-pin package. This system is designed for use in cost, space, and power-constrained applications and features an SPI/QSPI/MICROWIRE-compatible serial interface that saves additional board space and microcontroller 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

This electronic component model can be used in a range of applications where there are limitations on cost, space, and power consumption. It is suitable for use in applications where a UART with an ESD-protected RS-232 transceiver is required, such as in industrial control systems, network equipment, and battery-powered devices.

Comparison

• Integrated RS-232 transceiver and UART for cost, space, and power saving
• SPI/QSPI/MICROWIRE-compatible µC interface for additional board space and microcontroller I/O pins saving
• Internal charge-pump capacitors eliminating the need for external components
• True RS-232 operation down to 3V for lower supply voltage applications
• ESD protection for RS-232 I/O pins ensuring reliability in hostile environments

• The data rate of 230kbps may not be sufficient for high-speed applications
• Compatibility only guaranteed with MAX3100 and MAX3222E, limiting flexibility in choosing microcontrollers