ST3222C Low Power 3.0 to 5.5V, 400kbps, RS-232 Drivers and Receivers

The ST3222C is a robust, versatile and high-performance RS-232 interface device from STMicroelectronics, designed to meet the requirements of a wide range of communication applications. This integrated circuit is capable of operating with a supply voltage ranging from 3.0 to 5.5 volts, making it suitable for various low-power operations and compatible with many microcontrollers and digital systems that require RS-232 communication.

With a data transfer rate of up to 400kbps, the ST3222C ensures efficient and reliable serial communication for applications that demand moderate speed data exchange. It is particularly well-suited for portable or compact devices due to its low power consumption and small package footprint.

The device features two drivers and two receivers, which allows for full-duplex communication. This means that devices can send and receive data simultaneously, improving overall data throughput and system efficiency. The ST3222C also includes a proprietary low-dropout transmitter output stage, delivering true RS-232 performance from a 3.0 to 5.5V supply with a minimal power requirement.

Protection is a key aspect of the ST3222C design. The device includes a 300nA low-power shutdown mode, which significantly reduces power consumption when not in active use. Additionally, the receivers can handle up to ±30V input, and the driver outputs are protected against over-voltage, ensuring reliability and resilience in challenging electrical environments.

Other notable features of the ST3222C include a guaranteed data rate at worst-case load conditions, which provides consistent performance, and an ESD protection level of ±15kV using the Human Body Model. This makes the ST3222C an excellent choice for applications where electrostatic discharge could be a concern, such as in industrial or field-service equipment.

In summary, the ST3222C from STMicroelectronics is an ideal solution for battery-powered, handheld, and mobile devices that require a reliable RS-232 interface. Its low power consumption, high data rate, and robust protection features make it a smart choice for designers looking to incorporate a dependable serial communication interface into their systems.