IDT49FCT3805BQI

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The IDT49FCT3805BQI is a high-performance, low-skew clock fanout buffer designed for driving multiple copies of a high-frequency clock input signal with minimum phase and time delays. The device features 1, 2, or 6 outputs with each output having a compliancy to meet the most stringent EMI requirements of various application such as backplanes, computer buses, and other high-speed data communication systems. The device is embedded in an industrial temperature range and meets the requirements of microprocessor and networking applications.

The IDT49FCT3805BQI is a clock buffer used mainly in clock/timing applications and can be used to drive a wide range of high-speed clock signals. The device is a CMOS-based flip-flop type logic device which consists of two independent, non-overlapping, low-skew outputs. It can distribute a single high-speed clock signal to multiple loads, reduce unwanted noise, and minimize clock skew between different signals.

The device includes a clock input buffer which buffers the input signal and provides one or two low-skew outputs. The outputs of the device are terminated with an external load capacitance which increases the robustness of the outputs by providing a measure of protection from unpredictable variations in the environment. The device also features an enable/disable input which allows for active or passive control of the output signals. The enable/disable input is also used to minimize power consumption when the buffered output is not required.

The IDT49FCT3805BQI offers cost-effective, low-skew clock fanout for high performance CMOS-based systems. It also provides flexibility for various clock system applications by allowing users to customize output drivers and specify an optimal output frequency range. Additionally, the device allows for remote control of output frequencies and synchronization between multiple fanout buffers. The device is compatible with a wide range of clock frequencies and can be easily integrated into existing clock architectures to provide an efficient and cost-effective solution.

The working principle of the IDT49FCT3805BQI is based on the internal circuitry of a CMOS flip-flop. The device includes an input buffer, two depending data inputs and two independent output drivers. When the clock signal is applied to the clock input, the input buffer stores the signal and drives one or two low-skew outputs. The output drivers, which are connected to the data inputs, control the output signals. The outputs remain low if the data inputs are at a low, or vice versa.

The output drivers and the data inputs, along with the external load capacitance, form a multistage amplifier circuit for driving the output signals. The amplifier circuit is designed to match the inverting characteristics of the output drivers. This ensures that the output signals are accurately generated, even at high clock frequencies.

The circuit also ensures that any jitter introduced by the external load capacitance is accurately tracked by the output drivers when the output signals are switched. The synchronization between the output drivers and the external load is then used to ensure that the output signals are stable and low-skew.

The IDT49FCT3805BQI is a high-performance, low-skew clock fanout buffer designed for driving multiple copies of a high-frequency clock input signal with minimum phase and time delays. It is used mainly in clock/timing applications and is embedded in an industrial temperature range. The device includes a clock input buffer and two independent, non-overlapping, low-skew outputs. It features an enable/disable input which allows for active or passive control of the outputs. Additionally, the device offers cost-effective, low-skew clock fanout for high performance CMOS-based systems and is compatible with a wide range of clock frequencies.

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