MAX485 RS485 TTL to RS-485 Converter Module

MAX485 RS485 TTL To RS-485 MAX485CSA Transceiver Module is based on the Maxim MAX485 IC to allow serial communication over very long cable runs (up 4000 feet / 1200 meters). MAX485 converter board, serial data can be transmitted in both directions (half-duplex) at a data rate of up to 2.5Mbps. The max485 TTL to rs485 converter module operates from a standard 5V power supply and uses 5V logic levels allowing them to be interfaced to the hardware serial ports of microcontrollers such as Arduino/PIC etc. The direction of communication can be controlled with just one digital pin (see diagram). RS485 to TTL module can also connect multiple modules together for communication between 2 or more devices. For even greater distances two modules can be configured as a repeater.

Each module contains one driver and one receiver. Drivers are short-circuited current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is an open circuit.

Data connections to the RS-485 modules are provided by standard 0.1″ pitch header pins which can also be soldered into standard prototyping PCB and breadboards. Screw terminals provide a conventional connection to the actual data cable.

Features Of MAX485 Module RS-485 TTL to RS485 MAX485CSA Converter Module Circuit Board:

• On-board MAX485 chip, A low power consumption for the
• RS-485 communication, slew-rate limited transceiver.
• Then 5.08 (mm) pitch 2P terminal, convenient RS-485 communication wiring.
• All pins of the chip that have been led can be controlled through the mini-controller.

Specifications Of TTL to RS-485 Module Converter Board For Arduino:

1. Operating voltage: 5V
2. Distances: up to 1200 meters
3. Speeds: up to 2.5Mbit/Sec
4. Multi-drop supports: up to 32 devices on the same bus
5. Power LED: Red
6. Board size: 44 (mm) x14 (mm).

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

• VCC……..5V
• A…………Non-inverting Receiver Input and Noninverting Driver Output.
• B…………Inverting Receiver Input and Inverting Driver Output
• GND…….0V
• R0……….Receiver Output (to Rx pin of microcontroller)
• RE……….Receiver Output Enable (Low to enable)
• DE……….Driver Output Enable (high to enable)
• DI………..Driver Input (to Tx pin of microcontroller)

Package Includes:

• 1 x MAX485 RS485 TRANSCEIVER MODULE

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