SN65HVD257D

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The SN65HVD257D is an Integrated Circuit (IC) that performs the function of a data communications interface. It is classified as an interface IC and is used in many applications requiring the exchange or transmission of serial data between two devices or circuits. The SN65HVD257D is part of an IC family of High-Speed Transceivers or Bus Transceivers, that are used for the transfer of data over distances of up to several hundred meters. The SN65HVD257D is comprised of two integrated circuits in one package; a 2-channel Bus Transceiver and a 2-channel Bus Line Driver.

The application fields of the SN65HVD257D are broad, including applications in data communications, electrical instrumentation, automation and control, automotive and transportation systems, audio, video, and digital surveillance equipment, and embedded systems. The SN65HVD257D is a highly versatile IC and is used in applications where a high speed or low power transceiver design is required. Some of the common applications for this type of IC include Local Area Networks (LANs), Power over Ethernet (PoE) systems, and Universal Serial Bus (USB) communications.

The SN65HVD257D is used to isolate, buffer and convert logic levels between two connected devices. The high-speed transceiver is capable of transferring data between two devices over a wide range of line heights. It supports data rates up to 250 Kbps and line distances up to 1000 ft (305 m) depending on conditions. The SN65HVD257D also supports high-voltage differential signals (HDS) on both bus lines. These HDS signals are widely used in communication systems that require high speed, wide range and robust performance.

The SN65HVD257D is controlled by the logic level of a logic input pin. A logic “1” on the input pin enables the 2-channel Bus Transceiver and the 2-channel Bus Line Driver. When the logic “1” is received, the Bus Transceiver outputs an HDS signal on the bus line and the Line Driver outputs a differential signal on the Line. When the logic “0” is received, the Bus Transceiver stops outputting the HDS signal and the Line Driver outputs a low level signal on the line.

The SN65HVD257D is designed with a robust ESD protection on all 4 pins, protecting both the driver and receiver from electrostatic discharge. It also features a high-speed maximum RS-485 switching frequency of 20 MHz, an adjustable receiver sensitivity and a wide lockout window. The SN65HVD257D is compliant to AEC-Q100 requirements, making it an ideal choice for automotive applications where reliability is a key factor.

The SN65HVD257D is a high performance, cost effective and reliable IC that is used to simplify communication interface designs in many applications. Its combination of features make it a suitable solution for automotive, industrial, audio and many other applications that require the transmission and receipt of serial data. With its built-in ESD protection, adjustable receiver sensitivity, wide lockout window and high-speed maximum switching frequency of 20 MHz, the SN65HVD257D is an ideal choice for any interfacing design that needs to work reliably and at low cost.

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