MAX3222EETP - RS-232 Transceiver from Maxim Integrated

The MAX3222EETP is a high-performance RS-232 transceiver chip designed and manufactured by Maxim Integrated, a renowned name in the development of innovative analog and mixed-signal products. This integrated circuit (IC) is specifically engineered to meet the interface requirements for serial communication, providing a reliable connection between data terminals and data communication equipment.

Featuring a wide voltage range, the MAX3222EETP operates from a single +3.0V to +5.5V power supply, making it incredibly versatile for various applications. The low-power consumption of this transceiver is one of its standout features, with an operational current of just 300µA and a 1µA shutdown mode that significantly extends battery life in portable applications.

Key Features:

• Interface Type: RS-232
• Number of Drivers/Receivers: 2/2
• Supply Voltage Range: +3.0V to +5.5V
• Low-Power Shutdown Mode: 1µA
• Data Rate: 120kbps
• Electrostatic Discharge (ESD) Protection: ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge
• Operating Temperature Range: -40°C to +85°C
• Package Type: TQFN-20

The MAX3222EETP is equipped with two drivers and two receivers, supporting full-duplex communication with a data rate of up to 120kbps. It is designed with a proprietary low-dropout transmitter output stage, providing true RS-232 performance from a 3.0V to 5.5V supply with a dual charge pump.

The device also includes a shutdown feature that reduces power consumption and extends battery life in portable systems. When in shutdown mode, the device's receivers can remain active, allowing the IC to monitor RS-232 lines for wake-up signals or other communications.

Robust ESD protection is another critical aspect of the MAX3222EETP, safeguarding the transceiver against the harsh realities of the real world. The device offers ±15kV ESD protection on transmitter outputs and receiver inputs, ensuring reliability and longevity even in the most challenging environments.

With its small TQFN-20 package, the MAX3222EETP is perfect for space-constrained applications that require a reliable and efficient serial communication interface. It is widely used in portable or battery-powered electronics, such as laptops, PDAs, and other mobile communication devices.