The SP3243ECA/EEA are RS-232 transceivers manufactured by Exar Corporation. These devices are designed for portable or handheld applications such as notebook computers, where space and power consumption are critical considerations. The SP3243E family integrates multiple drivers and receivers into a single chip, providing a compact and efficient solution for RS-232 communication.

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
• Available in SOIC and SSOP packages
• Enhanced ESD specifications: ±15kV Human Body Model
• Two drivers and two receivers

Benefits

• Simplified RS-232 Interface: Provides a straightforward connection between microcontrollers and RS-232 serial ports.
• Low Power Consumption: Optimized for battery-powered devices with a low-power shutdown mode.
• Compact Size: The integrated design reduces board space requirements.
• Robust ESD Protection: Enhanced ESD protection ensures reliable operation in various environments.
• Flexible Operating Voltage: Wide operating voltage range allows for versatile system design.

The SP3243ECA/EEA operate from a single +3.0V to +5.5V power supply and use small 0.1μF external charge pump capacitors. They can transmit data at rates up to 120kbps while maintaining RS-232 signal levels. A low-power shutdown mode reduces supply current to approximately 1μA, conserving battery life. These transceivers are available in SOIC and SSOP packages.

The difference between the ECA and EEA versions may relate to package options or specific electrical characteristics, but both are designed to provide a reliable and efficient RS-232 serial communication solution for portable applications.