74LVCH16646APAG8

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The 74LVCH16646APAG8 is a high-speed bi-directional 8-bit buffer with separate output-enable and direction-control signals. It is used to buffer the data transmission between different logic levels and to provide logic level translation. It is a logic device classified as Logic - Buffers, Drivers, Receivers, Transceivers.

The 74LVCH16646APAG8 has a wide variety of applications including interfacing between FIFO, asynchronous FIFO, microcontroller, DSP and other digital devices, in high-speed data paths, and in serial networking devices. It is widely used in 5V and 3.3V applications in high-speed data paths, and in point-to-point connections. Additionally, it is used to control the direction of data transmission and, in certain devices, to provide logic level translation.

The 74LVCH16646APAG8 contains two octal buffer/driver circuits with separate output-enable (OEn) and direction-control (DIR#) signals, enabling direction control and level translation between 3.3V and 5V power systems. The buffer/driver circuits consist of eight independent drivers that are configured for bi-directional data flow. The use of separate output-enable and direction-control signals significantly reduces interface between two level-shifting drivers and eliminates the need for a fourth signal.

The maximum speed of the 74LVCH16646APAG8 is 700MHz, and it operates from 0 to 70 degrees Celsius (Tj). It has a power dissipation of 4.2 mW/stage and is capable of switching 8-bits of data at 20-ns access speed. The device also includes a power-up reset (POR) and a power-down reset (PDR) circuits. The POR circuit provides power-on reset of the bi-directional buffer while the PDR provides power-down reset.

The working principle of the 74LVCH16646APAG8 is governed by complex internal logic circuits. The internal logic circuit is responsible for translating data inputs (Ia…Ih) into the desired output voltage levels, detecting the logic level of the input pins, and driving the output pins (Oa…Oh) according to the logic level detected. The logic circuit also detects the logic level of the output-enable and direction-control signals, and controls the direction of the data flow accordingly.

The OEn input is used to control the output enable/disable for the device. When OEn is held Low, the outputs will be disabled regardless of the direction control (DIR#). When OEn is High, data will be loaded into the output latch and driven to the outputs, according to the logic level detected at the inputs. The DIR# input is used to control the direction of data flow. When DIR# is Low data will be enabled in the direction of Oa…Oh while data will be enabled in the direction of Ia…Ih when DIR# is High.

In summary, The 74LVCH16646APAG8 is a high-speed bi-directional 8-bit buffer that is used to buffer the data transmission between different logic levels and to provide logic level translation. It is classified as Logic - Buffers, Drivers, Receivers, Transceivers, and is used to control the direction of data transmission and to provide logic level translation. It has high-speed data transmission capacity (700MHz) and is useful for interfacing between FIFO, asynchronous FIFO, microcontroller, DSP and other digital devices in high-speed data paths and in point-to-point applications. The device works by employing complex internal logic circuits and it is controlled by separate output-enable and direction-control signals for efficient data flow.

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