49FCT806SOG8

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The 49FCT806SOG8 is a low skew, octal buffer/line driver with bus-hold outputs. Specifically, it is a buffer/line driver with an increased signal to signal skew of 25ps (690 FMAX). This is a very important factor for system designs in serious timing margins where output signal to signal skew must be held tightly.

The 49FCT806SOG8 provides the eight drivers with eight receivers. The drivers are TTL compatible and each of the drivers can be disabled with LOW inputs at the corresponding Enable pin. The output drivers are rated for 6.6V, and each channel is protected from damage due to ESD and transient voltages.

The 49FCT806SOG8 also has bus-hold outputs, where the bus-hold circuit holds the inputs of the bus-hold receivers valid, when the chip is powered down. One unique characteristic of this chip is that all of the receiver clock inputs operate on 3.3V -2.0V while the output signals swing between 1.65V - 5.5V. This chip can run at a frequency of a hundred and seventy-five megahertz.

The 49FCT806SOG8 can be used in many different applications such as CCTV systems and set top boxes, where signal timing and signal skew control is of the utmost importance. It is also used in synchronous DRAM interfaces and SRAM interfaces. Synchronous DRAM interfaces require very tight signal to signal skew specifications and need their clock signals to arrive simultaneously at their destination for proper system operation.

The 49FCT806SOG8 can also be used in other applications such as in networks, digital audio reproducing systems, digital video processing systems, and in mobile communication systems. It is used in these applications where signal level must remain stable and signal to signal skew is important.

On the working principle level, the 49FCT806SOG8 utilizes non-inverting bus-hold techniques that serve to hold valid the logic levels, allowing low-power. The 49FCT806SOG8 can be operated, even if the power supplied is not enough and all the outputs will hold their respective levels in the absence of the clock. To start operations, the chip utilizes clock input, enabling the internal logic to permit amplification.

The 49FCT806SOG8 is highly tolerant to noisy outputs and has a power dissipation of approximately 2 mW per device. It is available in a small 8-pin plastic package and can operate over a temperature range of -40°C to 125°C.

In conclusion, the 49FCT806SOG8 is a clock buffer/line driver specifically designed to reduce signal driving skew to only 25ps. This clock buffer/line driver provides eight buffers with receivers and bus-hold outputs and can be used for digital audio/video processing systems, mobile communications, synchronous DRAM and SRAM interfaces, and networks.

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