The SP3281EBCA is a single-channel RS-232 transceiver manufactured by Exar Corporation. It provides a simple and cost-effective interface between a UART and an RS-232 serial port. This device is designed to meet the needs of applications requiring basic RS-232 communication functionality.

Applications

• Single Channel RS-232 Applications
• Notebook and Laptop Computers
• Sub-Notebooks
• Palmtop Computers
• Handheld PCs
• Battery-Powered Equipment
• Peripherals
• Printers

Features

• Meets all ElA-232E and ITU V.28 specifications
• Operates from a single +3.0V to +5.5V power supply
• Requires only 0.1μF charge pump capacitors
• High data rate – 120kbps under load
• Low power shutdown mode (typically 1μA)
• Output swing limit of ±8V
• Enhanced ESD specifications: ±15kV Human Body Model
• Single Driver and Single Receiver

Benefits

• Simplified RS-232 Connectivity: Provides an easy-to-use interface between UARTs and RS-232 ports.
• Low Power Consumption: Ideal for battery-powered devices due to its low-power shutdown mode.
• Compact Solution: Reduces board space requirements with its integrated design.
• Robust ESD Protection: Ensures reliable performance in environments with potential electrostatic discharge.
• Flexible Operating Voltage: Allows for versatile system designs.

The SP3281EBCA operates from a single +3.0V to +5.5V power supply and requires only small external charge pump capacitors. It transmits data at rates up to 120kbps while maintaining RS-232 signal levels. A low-power shutdown mode is included to reduce supply current to a typical 1μA, which is important for extending battery life. The device features a single driver and a single receiver.

The SP3281EBCA is suitable for a variety of single-channel RS-232 applications, particularly those where low power consumption and a small footprint are critical design considerations.