IDT74FCT807BTPY

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The IDT74FCT807BTPY is a low voltage, low cost octal buffer/line driver designed to increase the fan-out of 3.3V or 5V devices. It is mostly used to interface data and address buses of major microcontrollers and microprocessors. It is most appropriate for high speed applications and heavily loaded buses.

Application

The fundamental application of the IDT74FCT807BTPY are buffering and line drivers for clock and data buses. It is specifically designed for the application of Clock Buffers, Drivers, meaning it’s purpose is to extend the load capacity of a system’s clock. The well-known applications of the device include; a bias buffer, clock generator, delay cell, fanout buffer, input buffer, LVTTL to TTL translation, logic translator, SIMM buffer, system clock, test buffer and voltage translation. The output stages of the IDT74FCT807BTPY are controlled by individual three-state pins and its output signals are high-impedance when disabled.

Working Principle

The IDT74FCT807BTPY is an octal buffering and line driver device which provides an eight-bit buffer and a fan-out for extending the fan-out of 3.3V or 5V devices. The device is designed to operate at a temperature range from −40ºC to +85ºC. The IDT74FCT807BTPY is available in both standard (non-inverting) and inverting (complementary output) versions. The standard version has single-ended input/output stages, while the inverting version has complementary inputs/outputs.

The working principle of the IDT74FCT807BTPY is to extend the load capacity of a system’s clock. The device utilises an open-drain output to buffer the clock in order to prevent loading the system’s clock. When the input of the clock buffer goes high, the output of the buffer is forced to stay low and the output driver is powered up, allowing the clock signal to pass through the buffer. The IDT74FCT807BTPY is designed to operate up to 50MHz. The device has a typical propagation delay of 4ns (maximum of 6ns), enabling higher speed and lower crosstalk between devices.

Features

The features of the IDT74FCT807BTPY are as follows;

• 3.3V or 5V compatible operation
• Operating range up to 50MHz
• Propagation delay of 4ns (compliant to PCI specification)
• Individual three-state pins
• Open-drain output to buffer clock
• Available in both inverting and non-inverting versions
• Operates over temperature range of -40°C to +85°C
• Ideal for high speed and heavily loaded buses

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