SN65HVD1474DGKR

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Introduction

The SN65HVD1474DGKR is an advanced quad differential Bus transceiver integrated circuit (IC) primarily used for RS-422/RS-485 communications. It is widely used as a Bus Protocol Line Driver, allowing multiple nodes to communicate reliably over long distances. This IC contains four differential line drivers and four receivers, in addition to its several capabilities to monitor Bus conditions and communicate with microcontrollers. This high-speed Bus transceiver is designed to harmonize well with the communication requirements between two devices, while providing superior electro-magnetic interference (EMI) immunity, low power consumption and high data transfer rate in harsh environments.

Application Fields

The SN65HVD1474DGKR is popularly used in many applications. It is well suited for line terminating, light load driving, and systems requiring plenty of noise immunity. Some of the components that it furnishes are a data transmission rate of up to 250Kbps, anti-interference features, loop back connection configuration, and communication enable pins. It is widely used in many areas such as the industrial, medical, automotive and aerospace industries for point-to-point and multi-point applications. In addition, it is also useful in telecommunications, networking and factory automation.

Industrial - This device is applicable for use in industrial factory automation and process control scenarios. It could be used in combination with sensors, controllers, and windows-based computers, to provide a data communication interface. The device is also used in the production line and automated warehouses. The device’s highly reliable data transfer rate, good noise immunity and buffering capability, offer excellent performance in harsh industrial environments.

Medical - The device also blesses the medical industry. From hospital wards and nursing homes, to motorized wheelchairs and personal care devices, this IC enables long and reliable communication link over long distances, connecting medical devices and equipment’s.

Automotive and aerospace - This device has proven itself to be an ideal choice for automotive and aerospace applications, where velocity and bandwidth are necessary. Examples include transmission control, fly-by-wire communication, distributed fiber optic sensing, and navigation and telemetry applications, which require reliable and robust data flow.

Working Principle

The SN65HVD1474DGKR transceiver IC works based on three essential components – the transmitter, receiver, and a power supply connector. The transmitter contains four drivers, which are connected to the drivers’ ports. The receiver, on the other hand, contains four receivers, which are connected to the receivers’ ports. The power supply connector is responsible for providing the power supply to the chip. The outputs of the transmitter are connected to the receivers’, which are connected to the input of the transmitter. This is referred to as the HVDCM1 loopback connection configuration. This configuration allows the transmitter to transmit data, and the receiver to receive it.

The SN65HVD1474DGKR provides multiple protection features, improving the longevity of the device. The quiet transition mode helps to minimize the transients when switching from the disabled mode to enabled mode. Other features include the receiver output voltage hold-off, receiver jitter control, and thermal shutdown protection. The device also has simple communication interface, allowing easy connection with a microcontroller. This is done by connecting the device’s Enable pin and the driver port to the microcontroller’s output, and the receiver port to the microcontroller’s input. This allows the device to be used as an interface bridge between two different devices.

To conclude, the SN65HVD1474DGKR is a versatile high-speed differential Bus transceiver IC, widely used for reliable RS-422/RS-485 communications in many application fields. It is used in a variety of industrial, automotive, aerospace, and medical scenarios, offering excellent data transmission rate, reliable performance and high noise immunity. The device uses a three-component communication system, consisting of the transmitter, receiver, and a power supply connector. In addition, it incorporates several protection features, offering robust functionality and high longevity.

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