The XR15757A, manufactured by Exar Corporation, is a 5V, single-channel, universal asynchronous receiver/transmitter (UART) with an integrated USB interface. It is designed to bridge the gap between serial communication and USB connectivity, offering a convenient and efficient solution for various applications.

Applications

• USB to serial converters
• Embedded systems
• Point-of-sale (POS) systems
• Industrial automation
• Medical devices

Features

• Single-channel UART
• Integrated USB interface
• Data rates up to 1 Mbps
• 5V operating voltage
• Internal oscillator
• Automatic USB suspend and resume
• Flow control (hardware and software)
• Available in various package options

Benefits

• Simplifies USB connectivity for serial devices.
• High data rates enable fast communication.
• Single 5V supply simplifies power supply design.
• Internal oscillator reduces external component count.
• Automatic USB suspend/resume conserves power.
• Flow control ensures reliable data transfer.
• Versatile package options for different board layouts.

Additional Details

The XR15757A operates within a specified temperature range and offers various configuration options to customize the UART settings. It is designed with robust ESD protection to prevent damage from electrostatic discharge. The Exar datasheet provides detailed information about the device's timing characteristics, power consumption, and configuration options. This UART is commonly used in applications requiring a simple and reliable USB to serial interface, such as connecting legacy serial devices to modern USB-based systems. Its integrated USB interface eliminates the need for external USB controllers, reducing board space and cost. The XR15757A helps to improve the overall efficiency and ease of use of serial communication by providing a seamless bridge to USB connectivity. It is an excellent choice for a wide range of applications where serial communication needs to be integrated with USB-based systems. The device's internal oscillator further simplifies the design by eliminating the need for an external clock source. Automatic USB suspend and resume functionality helps to conserve power in battery-powered applications.