74ABT640DB,118

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The 74ABT640DB is a logic buffer,drivers, receivers, and transceivers. It is a 16-bit LS-TTL logic buffer-transceiver with3-state outputs. The logic buffer are designed for asynchronous communication between data buses. The 3-state outputs provided on the 74ABT640DB ensure that the output signals from the bus does not conflict with otherbus signals when the bus is in an active state.

The 74ABT640DB has a total of eight 3-state buffered inputs. These inputs allow for the easy connection of both ground and voltagedevices to the bus. The inputs also support the necessary voltage levels for the low power 3.3V and 5V LS-TTL logic levels. The inputsare also time delay matched, ensuring that data is correctly latched onto the inputs during a write cycle.

The output of the 74ABT640DB is configured as an open-drain driver. Thisoutput configuration allows the device to be used as a driver, receiver, ortransceiver. The output can be configured as input only, output only, bidirectional, or high impedance. The open-drain output provides a lowimpedance to the bus and allows for easy bus voltage switching. The outputscan be configured as either push-pull or 3-state output.

The 74ABT640DB is typically used in applications requiring a fast, reliable, and cost effective bus transition with an asynchronous,parallel interface. It is used in a variety of embedded systems, includingmodems, graphics processing units (GPUs), PC motherboards, medical andtelecommunications systems, and many other applications.

The 74ABT640DB has a wide operating temperature range from -40°C to +85°C, making it suitable for use in a variety of high temperature orhigh humidity environment. In addition, it is designed for low powerconsumption, making it ideal for battery operated systems.

One of the key features of the 74ABT640DB is its low power operation. It utilizes a dual power supply, allowing it to switch betweendifferent voltages depending on the application. When the device is used inconjunction with a 3.3V supply the power consumption is approximately 5mA, giving it an effective power efficiency rate of up to 95%.

The 74ABT640DB is also designed with an enhanced immunity to noise and interference. The device utilizes low EMIactivity and low power consumption levels, thus reducing interference fromother system components. Additionally, the active pull-down output enablereduces the induced emissions in the system, thus minimizing interference.

In summary, the 74ABT640DB is a low cost, low power, and low electromagnetic interference device designed for asynchronous bus communication and data transfers. It is suitable for use in a variety of applications, including embedded systems, medical and telecommunications systems, and PC motherboards.

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