Features

• The TTL/RS485 signal can be converted into a differential RS485 signal, support Full Duplex communication
• Compatible with 3.3V ~ 5V TTL signal level, Power supply terminal with anti-reverse and anti-overvoltage circuit
• Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
• Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
• Onboard TVS (Transient Voltage Suppressor),effectively suppresses surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
• Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage protection, improve shock resistance
• Integrates optional RS485 output terminal 120R resistor, switch via a Built-in jumper cap
• Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective

   Specifications

• PRODUCT TYPE : Electrical isolation TTL To RS485 Serial converter
• POWER SUPPLY INTERFACE
• Power supply: 3.3V ~ 5V
• Protection : Anti-reverse, anti-overvoltage
• DEVICE PORT : TTL / RS485 standard compatible
• TTL
• Connector : screw terminal
• Transmission distance : be smaller than 10m
• Transmission mode : point-to-point
• RS485
• Connector : screw terminal
• Interface protection : Provides 600W lightning protection, surge protection and 15KV electrostatic protection
• Terminal resistor : 120R, switch via a Dial-up switch for enable
• Transmission Distance : About 1.2km
• Transmission Mode : Full Duplex Model, point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
• APPEARANCE
• Case : Rail-mount ABS case
• Dimensions : 91.6 × 58.7 × 23.3mm

Converting The TTL Signal Into Balanced Differential RS485 Signal

For Interface Converting, Expanding Nodes And Long-Distance Communication

Easy To Combine Multi Rail-Mounted Serial Server Together, More Freely

Onboard power and signal isolation, provide stable isolated voltage, high reliability and strong anti-interference. Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic. Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage protection, improves shock resistance

• Upper side Terminal interface illustrate
• VCC : Power in positive
• Powered by DC 3.3V ~ 5V
• GND : GND
• TXD : TTL signaling pin
• RXD : TTL signal receiving pin
• lower side Terminal interface illustrate
• Dial-up switch : 120R Enable switch
• SGND : 485 Signal ground
• A+ : RS485 differential signal positive
• B-  : RS485 differential signal negative

TTL To RS485 Serial port Module, point-to-point, Half duplex communication, for interface conversion

TTL and RS485 interface conversion, point-to-point, Half duplex communication, for expanding communication nodes

Through two sets of TTL and RS485 interface conversion, point-to-point, Half duplex communication, for extended TTL communication distance

The RS232 TO RS485 (B) can be widely used for point-to-point, point-to-multipoint, long distance cascaded communication network between two hosts, or between host and MCU/Peripheral. It also can be used in the application scenarios that require TTL to RS485 conversion such as Industrial Automation and IoT

   Video

1. TTL TO RS485 (B)  x1
2. Screwdriver x1