NXP SC16C654IA68 Quad UART with 64-Byte FIFO

The NXP SC16C654IA68 is a high-performance quad-channel Universal Asynchronous Receiver/Transmitter (UART) integrated circuit, designed to address the needs of both industrial and commercial applications that require multiple serial interfaces. This robust component extends the capabilities of NXP's UART portfolio, offering enhanced features and increased flexibility for systems that demand reliable serial communications.

Each of the four UART channels in the SC16C654IA68 is equipped with a 64-byte transmit and receive FIFO, which significantly improves the efficiency of data handling over serial connections. These deep FIFOs allow the device to manage higher data rates and decrease the CPU load by reducing the number of interrupts during data transfer operations. This is particularly beneficial in multitasking operating systems or when dealing with high-speed serial data streams.

The device operates at a voltage range of 2.5V to 3.3V, making it suitable for low-power applications. It supports baud rates up to 5 Mbps, giving it the ability to cater to applications that require fast data throughput. Additionally, the SC16C654IA68 provides a full modem interface and an IrDA (Infrared Data Association) SIR (Serial Infrared) encoder/decoder, making it highly versatile in various communication scenarios.

One of the key features of the SC16C654IA68 is its support for the industrial standard 68-pin PLCC (Plastic Leaded Chip Carrier) package, which ensures easy integration into existing designs and contributes to its robustness in harsh environments. The device also includes an automatic in-band flow control using Xon/Xoff characters, as well as out-of-band flow control using CTS#/RTS# signals.

For developers, the SC16C654IA68 provides enhanced features such as programmable TX and RX trigger levels, automatic hardware (RTS#/CTS#) or software (Xon/Xoff) flow control, and a sleep mode with wake-up indicator. These features make it an ideal choice for complex applications such as factory automation, point-of-sale systems, and networking equipment, where multiple serial devices need to be controlled efficiently and reliably.

In summary, the NXP SC16C654IA68 is a feature-rich quad UART solution that offers high-speed data transfer, flexible interfacing options, and efficient FIFO management, making it a top choice for designers looking to enhance their serial communication capabilities.