The Sipex SP3243ECY is a 3.3V Low Power RS-232 Transceiver solution. It is designed to meet the electrical specifications of RS-232 while operating from a single 3.3V power supply. This makes it suitable for portable and battery-powered applications. The SP3243ECY integrates charge pump capacitors that generate the necessary RS-232 voltage levels from the 3.3V supply.

Applications:

• Laptop Computers.
• Notebook Computers.
• Palmtop Computers.
• PDAs (Personal Digital Assistants).
• Battery-Powered Systems.
• Printers.
• Modems.

Features:

• Meets all EIA/TIA-232 and V.28/V.24 specifications.
• Operates from a single 3.3V power supply.
• Low Power Operation.
• Integrated charge pump circuitry to generate RS-232 voltage levels.
• Data rates up to 250 kbps.
• Three drivers and five receivers.
• Available in various package options.

Benefits:

• Reduced Power Consumption: Low power operation extends battery life in portable applications.
• Simplified Design: Integrated charge pump eliminates the need for external high-voltage power supplies.
• Increased Design Flexibility: Operates from a single 3.3V supply, simplifying system design.
• Smaller Footprint: Available in small package options, saving board space.
• Reliable Communication: Meets all relevant RS-232 standards for reliable data transfer.

Additional Details:

The SP3243ECY typically requires four external 0.1μF capacitors for the charge pump circuitry. The transceiver supports data rates up to 250 kbps. The driver outputs are protected against short circuits. Detailed electrical characteristics, including supply current, driver output voltage levels, and receiver input voltage levels, can be found in the Sipex (now MaxLinear) datasheet.

This RS-232 transceiver is well-suited for applications where low power consumption and a single 3.3V supply are required. Its integrated charge pump and small package options make it a popular choice for portable and embedded systems.