ST3222EBTR Low Power 3V to 5.5V, 400kbps RS-232 Transceiver

The ST3222EBTR from STMicroelectronics is a robust, low-power transceiver for RS-232 communication that operates from a single 3V to 5.5V power supply. Designed for battery-powered systems, this transceiver features a dual driver/receiver interface connection between the serial port of a microcontroller and an RS-232 compatible device. It is particularly suitable for applications where power efficiency is a critical factor.

Key Features

• Low Power Consumption: The ST3222EBTR is optimized for low-power consumption, drawing only 300μA of supply current when unloaded or fully loaded with the drivers disabled.
• Wide Operating Voltage Range: With an operating range of 3V to 5.5V, this transceiver is versatile for various system voltages, making it ideal for both 3.3V and 5V systems.
• High Data Rate: It supports data rates up to 400kbps, providing a reliable and fast data communication for applications that require moderate speed.
• ESD Protection: The device includes 15kV ESD protection on the transmitter output and receiver input lines, which safeguards the transceiver from electrostatic discharges during handling or operation.
• Low Dropout: The proprietary low-dropout transmitter output stage enables true RS-232 performance from a 3.0V to 5.5V supply with a dual charge pump.
• Small Package: The ST3222EBTR comes in a TSSOP package, which is ideal for space-constrained applications.

Applications

The ST3222EBTR is suitable for a wide range of applications, including:

• Portable or Compact Devices
• Battery-powered Equipment
• Notebook, Subnotebook, and Palmtop Computers
• Handheld Equipment
• Peripherals

With its combination of low-power operation, high data rate capability, and ESD protection, the ST3222EBTR is an excellent choice for designers looking to implement RS-232 communications in power-sensitive and space-limited environments.