MAX485 TTL to RS485 Module
₹41
In stock
- The MAX485 TTL to RS485 Module converts standard TTL serial signals (UART) from microcontrollers into differential RS485 signals for long-distance, high-noise industrial communication. Featuring a low-power MAX485 chip, onboard 5.08mm screw terminals, and 5V operation, it allows seamless multipoint networking and Modbus RTU communication up to 1200 meters with Arduino, Raspberry Pi, and PLCs.
Description
Extend your microcontroller’s serial communication range and immunity to electromagnetic noise with the MAX485 TTL to RS485 Transceiver Module. Standard UART TTL communication (from Arduino or ESP32) is limited to short distances. This module converts those single-ended 5V TTL signals into differential RS485 signals, enabling reliable half-duplex communication over distances up to 1200 meters (4000 feet).
Built around the industry-standard Maxim MAX485 IC, the board includes onboard 5.08mm 2-pin screw terminals for easy connection to twisted-pair cabling. It supports multi-drop bus topologies (up to 32 transceivers on a single bus), making it the perfect choice for Modbus RTU projects, industrial automation, building automation, automated meter reading, and long-range robotics networks.
Technical Specifications
| Parameter | Specification |
| Transceiver Chip | MAX485 / MAX485CSA |
| Operating Voltage | 5V DC |
| Signal Conversion | TTL (UART) $\leftrightarrow$ RS485 (Differential) |
| Communication Mode | Half-Duplex |
| Max Data Rate | Up to 2.5 Mbps |
| Max Cable Distance | Up to 1200 Meters (at lower baud rates with twisted pair) |
| Onboard Connectors | 5.08mm Pitch 2-Pin Screw Terminal (A & B Lines) |
| Header Pins | 4-Pin 0.1″ Pitch Header (VCC, GND, RO, DI, RE, DE) |
| Bus Capacity | Supports up to 32 Transceivers on a Single RS485 Bus |
| Board Dimensions | ~44mm × 14mm |
| Compatibility | Arduino (UNO, Mega, Nano), Raspberry Pi, ESP32, STM32, PLCs |
Pinout Configuration
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VCC: 5V Power Supply
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GND: Ground
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RO (Receiver Output): Connects to Microcontroller RX Pin
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DI (Driver Input): Connects to Microcontroller TX Pin
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RE (Receiver Enable): Active Low (Set LOW to receive)
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DE (Driver Enable): Active High (Set HIGH to transmit)
(Note: RE and DE are typically tied together to a single GPIO pin for transmission control)
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A / B Terminals: RS485 Differential Bus Lines
Key Features & Highlights
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Long-Distance Transmission: Drives differential signals across twisted-pair wires up to 1.2 km with high immunity to noise and EMI.
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Low Power Consumption: Quiescent current of less than 500$\mu$A, making it efficient for distributed sensor networks.
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Easy Screw Terminals: Dedicated 2-pole screw terminal block for secure, hassle-free bus line wiring.
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Multi-Drop Bus Topology: Connect up to 32 nodes on a single two-wire bus for Modbus RTU industrial networks.
What’s Included in the Box
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1 × MAX485 TTL to RS485 Transceiver Module
Why Buy From Aryabot?
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100% Genuine Gear: Sourced directly to guarantee authentic, high-quality ICs and interface modules for your engineering builds.
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Tested & Reliable: Bench-tested for signal integrity and pin continuity prior to dispatch.
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GST Invoice Available: Tax-compliant invoicing provided for corporate buyers, engineering colleges, and research labs.
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Pan-India Express Delivery: Swift order processing and dispatch directly from our Noida fulfillment warehouse.
Additional information
| Weight | 0.005 kg |
|---|---|
| Dimensions | 6 × 3 × 2 cm |
