DS485MX

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RS485M is an RS485 transceiver chip, which is used to receive, transmit and implement serial data communication control. It has a wide range of applications in various fields such as industrial control, automotive and digital home. It has a compact size, low power consumption and stable performance.

Application Field

The application field of the transceiver chip RS485M is mainly used to drive long-distance transmission and high-speed data exchange in industrial settings, such as industrial control, instrumentation and factory automation. In these fields, it can be used to drive the communication of serial data between the host computer and various industrial control devices, such as encoders, temperature detectors, meter readers and other types of input and output devices. In addition, it can also be used to drive the communication between two hosts, such as two personal computers or two serial ports on the same chip, for data exchange and information sharing.

Working Principle

The working principle of RS485M chip is to use embedded Reed-Solomon coding to achieve high-speed transmission. Its on-chip transmitter circuits make use of full-duplex, multi-drop communication protocol between the network hosts. It sends out data bit by bit at a rate of up to 100mbps, with up to 128 devices on the bus. The chip supports four different kinds of data encoding methods: NRZ, Manchester, MLT3 and Scrambler.

The receiver circuit of RS485M offers improved EMI/RFI immunity and data collision avoidance. An internal comparator is adopted for signal detection. It can detect signals in the presence of large interference, and minimize signal distortion by controlling the larger voltage drop in the receivers. The chip also offers operation in hot-plugging environment, which makes it suitable for rapid field operation.

The RS485M transceiver can be used in a wide variety of voltage levels, including 5V, 3V and 1.8V, depending on application requirements. It also offers an adjustable power consumption of 0.5 to 2A, which offers flexibility in design of power saving applications. Moreover, the chip also includes built-in protection circuits to protect against abnormal power supply and short-circuits.

In conclusion, the transceiver chip RS485M is an important component of the serial bus related industrial application solutions. It is characterized by its low power consumption and ultra-high data transmission speed, wide working voltage range, reliable signal detection and enhanced EMI/RFI immunity. It is ideal for use in a wide range of applications.

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