MAX3222EUP+

Product Overview

The MAX3222EUP+ from Analog Devices Inc./Maxim Integrated is a surface-mount RS232 transceiver intended for embedded serial communication interface designs. It provides two drivers and two receivers in a full-duplex configuration, allowing simultaneous transmit and receive paths. The device operates from a 3 V to 5.5 V supply and is specified for a 120 kbps data rate. The receiver hysteresis is specified as 300 mV. The 20-TSSOP package (0.173 in, 4.40 mm width) is a surface-mount package.

Key Features

• RS232 protocol transceiver
• Two drivers and two receivers for full-duplex serial communication
• 120 kbps data rate
• 300 mV receiver hysteresis
• 3 V to 5.5 V supply voltage range
• Operating temperature range of -40°C to 85°C
• Surface-mount 20-TSSOP package (0.173 in, 4.40 mm width)

Applications

• Microcontroller-to-host RS232 serial ports
• Point-to-point RS232 links between embedded controllers and peripherals
• Serial command and data interfaces in equipment control systems

Design & Procurement Notes

When selecting the MAX3222EUP+, match the 3 V to 5.5 V supply range to the system rail and confirm that 120 kbps meets the required serial throughput. The 2/2 driver and receiver count determines the number of transmit and receive channels available. The 2/2 full-duplex architecture suits designs needing simultaneous transmit and receive channels, while the 20-TSSOP surface-mount package requires footprint and land-pattern compatibility. The 300 mV receiver hysteresis and -40°C to 85°C operating range should be reviewed against the intended board layout, electrical signal environment, and thermal conditions before finalizing the overall interface design.