Industrial TTL to RS422 converter galvanic isolation DIN rail
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Industrial TTL to RS422 converter - galvanic isolation - DIN rail
High-end industrial TTL to differential RS422 signal converter, supporting full-duplex communication. The device is equipped with full galvanic isolation (power and signal) and advanced protection systems, ensuring stable data transmission and high interference resistance in industrial environments.
Key features:
- Conversion of TTL signal to balanced differential RS422 signal.
- Full galvanic isolation of power and digital signals.
- Compatibility with TTL logic levels 3.3V and 5V.
- Built-in protections: TVS, resettable fuse, and protection diodes.
- Protection against surges and ESD discharges up to 15kV on the RS422 port.
- Built-in 120R termination resistor activated via jumper.
- Industrial ABS housing adapted for DIN rail 35 mm mounting.
- Support for transmission over distances up to 1,2 km in full-duplex mode.
Function and application
The main task of the device is to convert TTL signal to the differential RS422 standard, which allows for increasing transmission range and building multi-point networks. In RS422 mode, it is possible to connect up to 256 nodes (for a larger number than 16, the use of signal repeaters is recommended).
Pinout description (Interfaces)
| Top connectors (TTL) | Bottom connectors (RS422) | ||
|---|---|---|---|
| VCC | DC power supply 3.3V ~ 5V | R+ | Differential signal reception (+) |
| GND | Power ground | R- | Differential signal reception (-) |
| TXD | TTL data transmission | T- | Differential signal transmission (-) |
| RXD | TTL data reception | T+ | Differential signal transmission (+) |
| GND | TTL signal ground | GND | RS422 signal ground |
Technical specification
- Product type: Isolated TTL to RS422 converter
- Power supply: 3.3V ~ 5V
- Power supply protection: Surge protection, reverse polarity
- TTL transmission distance: up to 10 m
- RS422 transmission distance: up to 1.2 km
- Operating mode: Full Duplex
- RS422 protection: Surge-suppress, 15KV ESD
- Termination resistor: 120R (jumper configurable)
- Housing: ABS, DIN rail 35 mm mounting
- Dimensions: 106.0 × 58.6 × 36.0 mm
Kit contents
- TTL TO RS422 converter (B) x1
- Small screwdriver x1
Safety
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