The XR16V554IV80-F is a quad Universal Asynchronous Receiver/Transmitter (UART) from Exar Corporation, featuring four independent channels for serial communication. It includes a 32-byte FIFO for transmit and receive operations, supporting data rates up to 3 Mbps. The device also incorporates automatic hardware and software flow control for reliable data transmission.

Applications:

• Multi-port serial interface cards
• Embedded systems requiring multiple serial connections
• Industrial automation and control systems
• Point-of-Sale (POS) terminals
• Networking equipment (e.g., routers, switches)

Features:

• Quad UART channels
• Data rates up to 3 Mbps per channel
• 32-byte transmit and receive FIFOs per channel
• Automatic hardware (RTS/CTS) and software (Xon/Xoff) flow control
• 5, 6, 7, or 8 data bits
• 1 or 2 stop bits
• Programmable baud rate generator
• Modem control signals (CTS, RTS, DSR, DTR, RI, DCD)
• Sleep mode for low power consumption
• Interrupt control

Benefits:

• Provides four independent serial communication channels, reducing the need for multiple UART devices.
• Supports high data rates, enabling fast and efficient serial data transfer.
• Large FIFOs reduce CPU overhead by buffering data, improving system performance.
• Automatic flow control prevents data loss and ensures reliable communication.
• Low power sleep mode minimizes energy consumption in battery-powered or power-sensitive applications.

Additional Details:

The XR16V554IV80-F operates from a 3.3V or 5V power supply and is designed for easy integration into various systems. The device includes interrupt control capabilities, allowing for efficient handling of serial communication events. The 32-byte FIFO per channel helps prevent data loss in high-speed applications. The device’s versatility and robust feature set make it suitable for a wide array of multi-port serial communication applications. The '-F' suffix typically indicates a lead-free package.