749611-8

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The D-Shaped Connectors - Centronics is a family of standardized parallel communication cables and connectors developed back in the 1970s by Centronics, an American printer company. The Centronics brand has since become a generic name. The 749611-8 application field and working principle is among the most common types of such connectors.

The 749611-8 is a 50-pin semi-diameter 5-row connector. It has a rectangular profile with terminals arranged on its lengthwise side, and angled "D" shaped surfaces arranged on its wide side. It has a row of even pins on one side, and a row of odd pins on the other. It is used primarily as a connection between a printer and a host computer, whereby each pin broadcasts a signal to the opposite side.

The 749611-8 application field spans from industrial equipment, to personal computers and peripherals, to medical equipment and test and measurement instruments, as well as metallic enclosures and printing machinery. It is known for its effective and reliable signal transmission, as well as its robust and durable construction. It provides superior signal frequency reliability due to its grounded shielding, and high frequency performance due to its multi-wire design.

The 749611-8 working principle works by each side sending a parallel signal, either through hardwired wiring or optical vias. When a signal is sent, all the pins on one side conduct and the pins on the other side receive. There is typically a row of even pins that transmits an even number and a row of odd pins that transmits an odd number. This provides flexibility and allows for multiple signal paths, as there may be up to 50 different pins on each connector. Additionally, they feature an impedance matching feature called an electrical shuttle, which helps ensure that the transmission power is consistent over varying distances.

The 749611-8 is a sturdy and reliable connector, making it a popular choice for data transfer and other communication-based applications. It is designed with anti-interference features to protect signal integrity, incorporates several EMI/RFI protection mechanisms, and has an 749611-8 contact to prevent static buildup and connector damage. Ultimately, this makes the 749611-8 an ideal choice for a variety of industries who require even and consistent signal transfers.

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