IDT49FCT3805AQI8

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The IDT49FCT3805AQI8 is an advanced, 25-bit buffered time distribution clock that offers solutions for a wide variety of clock conditioning applications. It is the ideal choice for designers looking for a low-power, highly integrated single package solution that is able to output multiple low-skew clocks and drive high fan-out applications demanding a high data throughput. The IDT49FCT3805AQI8 belongs to the Clock/Timing category of products, specifically the Clock Buffers, Drivers segment.

The IDT49FCT3805AQI8 is suitable for multiple applications from computing to communications, from cell site to LANs, from storage to mission-critical server applications which connecting point-to-point and across expansive topologies. For example, in storage area network (SAN) applications, the IDT49FCT3805AQI8 is used to replicate data between multiple storage devices. Similarly, in telecommunications applications, the IDT49FCT3805AQI8 drives clocks across large topologies as a member of SCSI 85 M/s.

The IDT49FCT3805AQI8 integrates 25 buffered output drivers and a 6-input, multi-frequency packet time distribution system. The device can output up to 25 low‑skew, low‑jitter clock outputs with a wide range of selectable frequencies and drive fan‑outs up to 147. This allows for a wide range of clock re-timing applications on boards with large routing requirements. It also features a local clock input that can be multiplexed onto any combination of outputs, providing flexibility for clock distribution options.

The key to the IDT49FCT3805AQ2I8′s effectiveness is its ability to easily and accurately output multiple frequencies. The device has excellent control over the selection of output frequencies, which allows the outputs to be spread out to better meet specific application requirements. The IDT49FCT3805AQI8 can be programmed to output up to 25 distinct frequencies, adjustable to nanosecond resolution, enabling users to optimize their clock distribution systems. The time distribution system also provides utilities such as input impedance adjustment and equalization, bit multiplication, and multi-phase spread spectrum.

The IDT49FCT3805AQI8 works by buffering an input frequency and synchronizing it to output frequencies which can then be replicated to the selected outputs. The device also allows for multiple frequencies to be inputted to the device and each frequency synchronized with an individual programmable phase, frequency and time skew. These can then be dispatched to their corresponding outputs.

The IDT49FCT3805AQI8 also offers a powerful Power-On Reset function that initiates at power on or when the device is reset, ensuring that the device is in a known state. The device also features a system reset timer that guarantees that all buffered outputs will reset if the local clock signal is lost and is not restored within the programmed timeout period. This ensures zero skew between the outputs.

To summarize

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