MAX489EESD+

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MAX489EESD+ is an integrated transceiver for interfacing between a microcontroller and differential signals. This transceiver isolates the two systems and allows long lines to be connected between them. It also includes an active pull-up resistor to drive RS-485 to the high state when no data is being transmitted and thus avoid the problem of receivers being misinterpreted as transmitters. The MAX489EESD+ can be used with both 3.3V and 5V logic systems, which makes it very useful in various application fields.

Application Field of MAX489EESD+

The MAX489EESD+ transceiver can be used in many application fields, such as intelligent instrumentation, industrial automation and control, distributed data acquisition systems and other applications requiring differential signals. This part also features low power consumption and a small package size, making it suitable for portable systems. It also supports multiple channel bus transmission and can be used in multi-dropped systems.

Working Principle of MAX489EESD+

The MAX489EESD+ transceiver consists of two receivers, two drivers and one differential line driver. The receiver can detect differentially incoming signals from the differential line and converts it into a single-ended logic level. When the receiver section is disabled, the driver section provides a constant logic high or low for multiple bus communication applications. The line driver is the key to isolation between systems. It uses the transformer isolation principle to provide isolation between two lines and is capable of driving up to 200 m of twisted-pair lines.

In order to protect the transceiver from damage, the MAX489EESD+ is equipped with thermal and short-circuit protections. The thermal protection limits the driver output power to a safe level. The short-circuit protection shuts down the drivers if it detects a short-circuit in one of the output lines.

Conclusion

The MAX489EESD+ transceiver is an integrated and powerful solution for interfacing between two different systems. It supports 3.3V and 5V logic and can drive up to 200 m of twisted-pair lines. It can protect itself from overloading and short-circuits. All these features make it a great choice for various applications.

The specific data is subject to PDF, and the above content is for reference