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  • Manual... 
  • Async RS-232↔RS-485 Interface Converter Manual
    Manual for the IC620A-F, IC620A-M, IC623A-F, IC623A-M, IC624A-F, and IC624A-M (Version 2)
 
  • Quick Start Guide... 
  • Industrial Opto-Isolated Serial to Fiber Multimode SC Converter Quick Start Guide
    Quick Start Guide (QSG) for the ICD114A (Version 1)
 

Black Box Explains...UARTs at a glance.

Universal Asynchronous Receiver/Transmitters (UARTs) are integrated circuits that convert bytes from the computer bus into serial bits for transmission. By providing surplus memory in a buffer, UARTs help applications overcome... more/see it nowthe factors that can hinder system performance, providing maximum throughput to high-performance peripherals without slowing down CPUs.

Early UARTs such as 8250 and 16450 did not include buffering (RAM or memory). With the advent of higher-speed devices, the need for UARTs that could handle more data became critical. The first buffered UART was the 16550, which incorporates a 16-byte First In First Out (FIFO) buffer and provides greater throughput than its predecessors.

Manufacturers have been developing enhanced UARTs that continue to increase performance standards. These faster chips provide improvements such as larger buffers and increased speeds. Here are the rates of today’s common UARTs:

UART FIFO Buffer Rate Supported
16550 16-byte 115.2 kbps
16554 16-byte 115.2 kbps
16650 32-byte 460.8 kbps (burst rate)
16654 64-byte 460.8 kbps (burst rate)
16750 64-byte 460.8 kbps (burst rate)
16850 128-byte 460.8 kbps (sustained rate)
16854 128-byte 460.8 kbps (sustained rate) collapse

  • Manual... 
  • Universal RS-232 to RS-422/485 Bidirectional Converter
    Installation and User Guide
 

Product Data Sheets (pdf)...Industrial DIN Rail Converter, Repeaters, and Fiber Driver


Product Data Sheets (pdf)...Async RS-232 to RS-422 Interface Converters

  • Quick Start Guide... 
  • Industrial Opto-Isolated RS-232 to RS-422/485 Converter Quick Start Guide
    Quick Start Guide (QSG) for the ICD200A
 

Product Data Sheets (pdf)...USB Hubs


  • Manual... 
  • Industrial Opto-Isolated Serial to Fiber Multimode SC Converter Manual
    Manual for the ICD114A (Version 1)
 
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