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PC16550DVX from NS,National Semiconductor

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PC16550DVX

Manufacturer: NS

Universal Asynchronous Receiver/Transmitter with FIFO's

Partnumber Manufacturer Quantity Availability
PC16550DVX NS 1500 In Stock

Description and Introduction

Universal Asynchronous Receiver/Transmitter with FIFO's The **PC16550DVX** from National Semiconductor is a high-performance Universal Asynchronous Receiver/Transmitter (UART) designed for reliable serial communication in embedded systems and computing applications. This integrated circuit (IC) is an enhanced version of the industry-standard 16550 UART, offering improved functionality and compatibility with a wide range of microprocessors and microcontrollers.  

Featuring a 16-byte FIFO (First-In, First-Out) buffer for both transmit and receive operations, the PC16550DVX reduces CPU overhead by minimizing interrupt requests during high-speed data transfers. It supports baud rates up to 1.5 Mbps, making it suitable for demanding communication protocols. The component includes programmable serial interface characteristics, such as data format, parity, and stop-bit configuration, ensuring flexibility across various applications.  

Key features include modem control signals, automatic hardware and software flow control, and a selectable interrupt system. Its robust design ensures stable operation in industrial and commercial environments, where noise immunity and signal integrity are critical.  

The PC16550DVX is commonly used in legacy serial port implementations, industrial automation, networking equipment, and point-of-sale terminals. Its backward compatibility with earlier UART models simplifies system upgrades while maintaining performance enhancements for modern requirements.  

This component remains a reliable choice for engineers seeking a proven solution for serial communication interfaces.

Application Scenarios & Design Considerations

Universal Asynchronous Receiver/Transmitter with FIFO's

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