Features

• The TTL signal can be converted into a differential RS422 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, 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 RS422 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 RS422 Serial converter
• POWER SUPPLY INTERFACE
• Power supply: 3.3V ~ 5V
• Protection : Anti-reverse, anti-overvoltage
• DEVICE PORT : TTL / RS422 standard compatible
• TTL
• Connector : screw terminal
• Transmission distance : about 10m
• Transmission mode : point-to-point
• RS422
• Terminal resistor : 120R, switch via a Built-in jumper cap (Need to disassemble the case)
• Transmission Distance : About 1.2km
• Transmission Mode : Full Duplex Model, point-to-multipoints (up to 256 nodes, it is recommended to use repeaters for 16 nodes or more)
• APPEARANCE
• Case : Rail-mount ABS case
• Dimensions : 106.0 × 58.6 × 36.0mm

Converting The TTL Signal Into Balanced Differential RS422  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, 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
• GND : TTL signal ground
• lower side Terminal interface illustrate
• R+ : RS422 receive differential signal positive
• R-  : RS422 receive differential signal negative
• T-  : 
• RS422 send differential signal negative
• RS485 differential signal negative (B-)*
• T+ : 
• RS422 send differential signal positive
• RS485 differential signal positive (A+)*
• GND : RS485/422 signal ground
• *Note: This product is mainly used to access RS422 communication; if it is used for RS485 communication, it can only send but not receive. If RS485 is used for sending and receiving communication, it is recommended to use TTL TO RS485 (B)

TTL To RS422 Serial port Module, point-to-point, Full Duplex Communication, for interface conversion

TTL and RS422 interface conversion, point-to-point, Full Duplex Communication, for expanding communication nodes

Through two sets of TTL and RS422 interface conversion, point-to-point,  Full 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 RS422 conversion such as Industrial Automation and IoT

   Video

1. TTL TO RS422 (B)  x1
2. Screwdriver x1