SN65HVD12D

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The SN65HVD12D device is an integrated transceiver used in applications requiring differential data communication on multipoint bus transmission lines. It includes three drivers and five receivers that provide bidirectional data communication via the differential bus. The device is especially suited for low-power communication applications where high data rates and robustness against electromagnetic interference (EMI) can be achieved with a single device. This application note discusses the SN65HVD12D device, its features, its application field, and its working principle.The SN65HVD12D device allows two-wire, full duplex data communication with a maximum signalling rate of up to 128kbps. The device achieves robust EMI performance due to an integrated noise reduction network. It also has a twisted-pair driver to reduce crosstalk between adjacent twisted-pair cables used in multidrop bus applications, resulting in enhanced communication reliability. The integrated receiver allows the device to detect and decode signals on the bus line with very low power consumption.The SN65HVD12D transceiver is used in applications requiring high data rate communication between components located up to 10 meters apart. Its robust EMI performance makes it an ideal solution for automotive and industrial communication networks. The device is used in a variety of automotive applications, such as car-to-car communication, headlamp control systems, engine control, and body electronic applications. It is also used in industrial networks, where it can be used for process control, robot control, and factory automation applications.The SN65HVD12D transceiver consists of three drivers and five integrated receivers, which are connected to the two-wire, full-duplex differential bus. The three drivers can transmit data from the network node to the bus line. Each driver is individually enabled or disabled, allowing the transmission of one or two bits per data block. The five integrated receivers continuously monitor the bus line for incoming data and decode valid signals.The SN65HVD12D drivers feature low-power circuitry that allows them to transmit data at low-power levels, resulting in minimal power dissipation. The drivers feature differential data input, which allows the data on the bus line to remain unaltered and free of interference. This also reduces the risk of crosstalk between adjacent twisted-pair cables.The SN65HVD12D receivers feature low-power circuitry coupled with integrated noise reduction networks, which allow them to detect and decode signals on the bus line with very low power dissipation. This can be particularly beneficial in applications requiring long buses and many nodes, as the overall power dissipation can be kept low.In summary, the SN65HVD12D transceiver provides a reliable solution for applications requiring high data rate communication between two or more points in a network from up to 10 meters apart. Its robust EMI performance makes it ideal for automotive and industrial applications, while its low-power operation ensures a reliable and low-power solution. The integrated drivers and receivers allow the device to maintain a robust and accurate communication link with very low power dissipation.

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