The SP3249ECA is a RS-232 transceiver manufactured by Exar Corporation. It provides a cost-effective and efficient solution for converting between RS-232 voltage levels and TTL/CMOS logic levels. This device is designed to operate with a single power supply and requires minimal external components.

Applications

• Notebook and Laptop Computers
• Sub-Notebooks
• Palmtop Computers
• Handheld PCs
• Cellular Phones
• 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
• Five drivers and three receivers

Benefits

• Simplified RS-232 Interface: Facilitates easy integration of RS-232 communication into digital systems.
• Low Power Consumption: Ideal for battery-powered applications due to its low-power shutdown mode.
• Space-Saving Design: Reduces board space requirements with its integrated design.
• Robust ESD Protection: Ensures reliable operation even in environments prone to electrostatic discharge.
• Flexible Operating Voltage: Allows for versatile system designs.

The SP3249ECA operates from a single +3.0V to +5.5V power supply and requires only four small 0.1μF external charge pump capacitors. It can transmit data at rates up to 120kbps while maintaining RS-232 signal levels. The low-power shutdown mode reduces supply current to a typical 1μA, extending battery life in portable applications. The SP3249ECA features five drivers and three receivers.

The SP3249ECA is a reliable and efficient solution for RS-232 serial communication, particularly well-suited for applications where low power consumption and a compact footprint are important.