TTL to RS485 (B) Galvanic Isolated Converter – Rail Mount Support
This TTL to RS485 converter supports half-duplex communication and converts TTL signal into differential RS485 signal. The converter is compatible with the 3.3V ~ 5V power supply. Protection features include anti-reverse and over-voltage protection.
The TTL to RS485 (B) has an onboard unibody power supply isolation that ensures stable isolated voltage without requiring extra power supply for the insolation terminal. The unibody digital isolation allows signal isolation with high reliability. Strong anti-interference and low power consumption make this converter suitable in most settings.
The Transient Voltage Suppressor (TVS) suppresses transient spike voltage and surge voltage in the circuit. It is anti-electrostatic and lightningproof. The protection diodes and resettable fuse ensure stable voltage and current outputs and shock-proof performance.
Primary Function
TTL Signal into Balanced Differential RS485 Signal Conversion.
Long-distance communication, expanding nodes and interface conversion.
Rail Mount Support
Multi-Protection Features
Onboard signal and power isolation, strong anti-interference, lightningproof diodes, and TVS.
Protection diodes and onboard resettable fuse.
Interface Layout
- VCC: 3.3V~5V DC Power Input
- GND: Ground
- TXD: TTL Transmit Data
- RXD: TTL Receive Data
- DIP Switch: 120R Enable Switch
- SNGD: RS485 Signal Ground
- A+: RS485 Differential Signal Positive
- B-: RS485 Differential Signal Negative
Communication Connection Diagram
Half-duplex communication – Point-to-Point – TTL to RS485 – Ideal for Interface Conversion
Half-duplex communication – Point-to-Multipoint – Ideal for Node Expansion
TTL to RS485 Two-Groups Conversion – Point-to-Point – Half-Duplex-Communication – Ideal for TTL communication distance extension
Some Examples of Possible Applications
Dimensions
Specifications
- Device Port: TTL/RS485 Standard Compatible
- Power Supply Compatibility: 3.3V ~ 5V
- TTL Connector: Screw Terminal
- TTL Transmission Distance: Approximately 10m
- TTL Transmission Mode: Point-to-Point
- RS485 Connector: Screw Terminal
- RS485 Protection: 15KV ESD Protection, 600W lightningproof and surge suppress
- RS485 Transmission Distance: About 1.2km
- RS485 Transmission Mode: Point-to-Multipoint (Up to 32 nodes – it is recommended to use repeaters for 16 nodes)
- Case: ABS Case – Rail-Mount Support (compatible with 35mm DIN Rail)
- Dimensions: 91.6mm x 58.7mm x 23.3mm
Items Included
- TTL to RS485 (B)
- Screwdriver
