The RS485 to TTL Auto Direction Converter Module enables reliable long-distance serial communication between TTL UART devices and RS485 networks similar and alternative to max13487 . With automatic transmit/receive direction control, it eliminates manual switching requirements, simplifying system design. Ideal for industrial automation, Modbus RTU, remote sensing, and microcontroller applications, the module offers robust and noise-resistant communication.

RS485 TTL Auto Direction

Name: RS485 TTL Auto Direction - robboquad
SKU: 2112
Price: 70.00 INR
Availability: InStock

SKU 2112 Category Sensors & Modules

₹70.00 (Excl GST)

excl. GST*

Bulk deal

Quantity	Discount	Discounted price
10 - 29	2.5%	₹68.25
30 - 69	5%	₹66.50
70 - 100	7.5%	₹64.75

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RS485 to TTL Auto Direction Converter Module

The RS485 to TTL Auto Direction Converter Module is a compact communication interface board designed to convert TTL serial signals to RS485 differential signals and vice versa. Featuring automatic transmit/receive direction control, this module eliminates the need for software direction switching, simplifying the implementation of reliable long-distance serial communication systems.

Key Features

Automatic transmit/receive direction control
No software control required for direction switching
Supports half-duplex RS485 communication
TTL to RS485 and RS485 to TTL signal conversion
Long-distance communication support
High noise immunity
Compact and easy-to-integrate design
Suitable for microcontroller interfacing

Technical Specifications

Parameter	Specification
Communication Standard	RS485 Half-Duplex
Logic Interface	TTL UART
Operating Voltage	3.3V – 5V DC
Direction Control	Automatic TX/RX Switching
Communication Distance	Up to 1200 meters (theoretical)
Baud Rate	Up to 115200bps (module dependent)
Communication Mode	Half-Duplex
Interface Pins	VCC, GND, TXD, RXD, A, B
ESD/Protection	Onboard protection circuitry (module dependent)
Dimensions	Compact PCB Module

Applications

Industrial Automation Systems
PLC Communication
Modbus RTU Networks
Smart Metering Systems
Remote Sensor Networks
Home and Building Automation
Microcontroller-Based Projects
Long-Distance Serial Communication

Important Notes

The module supports only half-duplex RS485 communication.
Ensure correct A and B line polarity while wiring the RS485 bus.
Use twisted-pair cable for long-distance communication.
Termination resistors may be required for long cable runs.
The module operates with TTL logic levels and should not be connected directly to RS232 interfaces.
For optimal communication reliability, maintain proper grounding between connected devices.