The TRS3221CDBRG4 is a high-performance, single-channel RS-232 line driver/receiver from Texas Instruments designed to operate with a 3-V to 5.5-V V_CC supply. It is optimized for data transmission at rates up to 250 kbps while providing robust electrostatic discharge (ESD) protection and low power consumption. This makes it an excellent choice for battery-powered, portable, and space-constrained applications such as mobile phones, PDAs, and other handheld devices.

Key Features

• Operational with a Single 3-V to 5.5-V Supply
• Low Power Consumption: ICC = 1 mA (Typical)
• ESD Protection for RS-232 Bus Pins: ±15 kV Human Body Model (HBM)
• Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards
• Automatic Power-Down Feature When No Signal is Present on the Receiver Inputs
• 250 kbps Minimum Data Rate
• External Capacitors: 4x 0.1 μF
• Operational Temperature Range: -40°C to +85°C
• Small Shrink Small-Outline Package (SSOP) for Reduced Space

Applications

The TRS3221CDBRG4 is suitable for a range of applications where RS-232 communication is required, including:

• Portable and Battery-Powered Equipment
• Notebook, Subnotebook, and Palmtop Computers
• Handheld Equipment
• Peripherals
• Printers

Product Advantages

With its low-power consumption and high ESD protection, the TRS3221CDBRG4 ensures reliable communication in sensitive and portable applications. The automatic power-down feature further conserves energy when the interface is not in use, extending battery life in portable devices. Its high data rate capability allows for fast data transfer, and the small package size makes it ideal for applications where space is at a premium.

The device's compliance with industry standards means it can be used in existing designs without the need for significant redesign, simplifying the process of upgrading or maintaining equipment. The use of external capacitors allows for design flexibility and can help to optimize performance for specific applications.

Overall, the TRS3221CDBRG4 by Texas Instruments is a robust, efficient, and versatile solution for RS-232 communication, particularly in portable and space-constrained environments.