MAX3189EEUT-T

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The MAX3189EEUT-T is a universal asynchronous receiver-transmitter (UART) with an integrated RS-485 and RS-232 transceiver. As a fully integrated solution, the chip handles all handshaking and control-level logic necessary to implement device communication standards such as RS-232, RS-485, and TTL.

The MAX3189EEUT-T, with its superior flexibility and superior performance, is an ideal bridge between the industrial-level communication protocols of RS-485 and RS-232 and the consumer-level convenience of TTL. It supports four-wire RS-485 and single-wire RS-232, with a wide range of baud rates and data modes. The chip offers very low power consumption, and its superior noise immunity provides reliable, transparent data communication in the most demanding industrial applications.

The MAX3189EEUT-T is a highly integrated device, containing a transceiver and UART controller in a single chip. It has 256-byte FIFOs for both receive and transmit, and two indicator LED outputs for easy status monitoring. The chip is designed for maximum flexibility, with functions such as programmable baud rate selection, parity, odd/even and framing in the UART protocol and 5V/3.3V operation in the transceiver.

The MAX3189EEUT-T is a versatile and feature-packed chip, suited for many applications related to device communication, such as automation systems, data logging and data acquisition. The chip’s primary usage is in industrial environments where data communication between disparate devices is necessary.

The MAX3189EEUT-T’s working principle is relatively straightforward and consists of five core functions:

• Transmission Controller: The MAX3189EEUT-T has a built-in Transmission Controller, which manages the transmitting and receiving of data from the UART interface.
• RS-485/RS-232 Transceiver: The chip has an integrated transceiver which allows data to be transmitted in either an RS-485 or RS-232 format.
• UART Interface: This interface controls the flow of data between the different components of the chip.
• Data FIFO: Data received from the UART interface is stored in the FIFO, a 256-byte buffer, until it is retrieved by the application.
• Signal I/O Ports: The chip supports multiple signal I/O ports, including ground (GND), transmit (TxD), receive (RxD), receiver enable (RxEN), detect (DET), driver enable (DRE), and status (ST).

The MAX3189EEUT-T has been designed for simple and reliable operation in industrial applications. It is extremely reliable and offers a wide range of features and performance levels. The chip offers a flexible solution for RS-232, RS-485, and TTL device communication with a low power consumption and impervious protection against noise. The MAX3189EEUT-T is the ideal bridge between industrial-level protocols and the convenience of TTL, allowing it to be applied in any number of industrial applications.

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