SN74ABT245BGQNR

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The SN74ABT245BGQNR is a part of the ABT245 family of octal bus transceivers, a logic device which serves as a bridge between levels of communication. This component is designed to transmit a data bus between boards and devices operating at different voltages, enabling high-speed bidirectional transfers of digital signals. A key feature of the SN74ABT245BGQNR is its ability to drive at least 15 LS-TTL loads or 24 sub-LCD loads. It is well-suited for applications where full-duplex, high-speed transmission of large chunks of data is required.

The SN74ABT245BGQNR contains two separate 8-bit buffers which can operate in either a bus-receiver (A) or a bus-transmitter (B) configuration. In the bus-receiver mode (A), the buffer transfers data bidirectionally, between the “A” and “Y” bus lines. Data is received on the “A” bus and transmitted on the “Y” bus. In the bus-transmitter mode (B), the data is transmitted on both buses. The SN74ABT245BGQNR is powered by 3.3V and each of the two 8-bit buffers has an access time of 15ns. The device can also be used in other applications such as isolated USB and RS-485 converter applications.

The SN74ABT245BGQNR requires five logic inputs to control its internal logic. These inputs are: Direction Control (DIR) which dictates the direction of data flow; Output Enable (OE) which puts the device in an inactive mode; Output Enable Inverse (OE*)which turns on the buffer side of the device; High Voltage Enable (HVE) which enables or shuts down the high voltage portion of the device; and High Voltage Enable Inverse (HVE*) which turns the high voltage side on or off. The device also outputs a High Voltage Low (HVL*) signal, which indicates when the high voltage side of the device is active.

The SN74ABT245BGQNR contains two power output pins (VCCA and VCCB) which can be used to provide regulated power to the device and its associated components. The device also contain four connectors (A*, B*, VCCA and VCCB) which can either be used to connect additional circuitry, or as a point-of-entry for external power. The SN74ABT245BGQNR also contains two LED indicators (Green and Yellow) to indicate when the device is in an active or inactive state.

The SN74ABT245BGQNR is a powerful, flexible and easy-to-use device for bridging the gap between high-speed communication components. Its ability to transmit and receive signals between devices with different voltage needs makes it an ideal choice for applications such as USB and RS-485 converters, and high-speed, multi-master serial bus systems. With its wide range of features and compact size, the SN74ABT245BGQNR can significantly improve the overall performance of any communication system.

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