XR3081XEDTR-F

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The XR3081XEDTR-F from Exar Corporation is an IC device belonging to the group of interface ICs, together with drivers, receivers and transceivers. The device belongs to the small line-card transceiver (SLC) family of products which have been developed for use in line-card interface applications. The primary application field of this IC is in the telecommunications industry, specifically for use in line cards and line crossconnects.

The device supports Gigabit Ethernet line-card applications over CP, Multi-Mode Fiber and CWDM cables. Moreover, it supports multiple data rate modes over several speed grades from 25 Mb/s to 6.25 Gb/s. Ideally, it is intended for telecom line cards that require low power and high performance.

The device offers several unique features like:

• CMX transceiver: This transceiver implements common mode cancellation to reduce thecm noise present in the cabling of telecom systems.
• Low power: Not only does the device consume less power, it also offers power saving modes for multiple speed grades and line codes.
• Flexible clock options: The device has options to choose either internal or external clocks or enable the built-in clock.
• External Signal Access: The device has access to the transmitted data signals as well as the received data signals, which can be used for other applications.
• Low latency: Latency of 22 ns minimum at 6.25 Gb/s. This feature makes the device suitable for quick turn-around time applications such as TDM VoIP.

The working principle of the device is based on the principle of optical transceiver technology. The device consists of a transmitter and a receiver which are used to send and receive optical signals through an optical fiber. The device implements a sophisticated encoding scheme to transmit data over the fiber. At the receiving end, a decoder is used to decode the incoming signals and convert them into digital data which can be understood by the systems.

The transmitter can be used for transmitting optical signals over the fiber up to 6.25 Gb/s. The transmitted signals are encoded using advanced modulation techniques like duobinary and RZ. The decoder is used to decode the incoming signals received through the fiber and convert them into digital data which can be understood by the systems.

The device is also designed with a Range Manager, which is used to control the rate of transmission and ensure that the signal is transmitted at the required rate. The device also features Clock Recovery, which is an important feature used to recover a clock signal from the incoming data signal and ensure that the signal is decoded correctly.

The XR3081XEDTR-F device from Exar Corporation is an ideal choice for line cards and telecom line crossconnects. It supports multiple data rate modes up to 6.25 Gb/s, offers extremely low power consumption and supports advanced modulation schemes such as duobinary and RZ. Additionally, the device has excellent jitter performance and low latency, making it a reliable choice for telecom applications.

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