3000V high voltage signal isolation specification USB <=> RS422 converter
*Significantly miniaturized compared to the conventional SI series, meeting space-saving requirements *USB bus-powered operation is possible, eliminating the need for an external power supply *Includes a virtual COM port driver compatible with Windows 10 *Operates in harsh environments with a temperature range of -20 to 60 °C *Adopts a robust and noise-resistant compact metal housing *Supports high-speed communication from 300 bps to a maximum of 3 Mbps *Enables RTS-CTS flow control at RS-422 levels *Control lines can switch between RTS/DTR and CTS/DSR *Supports long-distance transmission of over 1.2 km, leveraging the features of RS-422
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basic information
The SI-20US is an interface converter that transforms a computer's USB port into an RS-422 port capable of long-distance transmission over 1.2 km with strong noise resistance. The RS-422 side features a terminal block design for easy wiring. It can convert a total of four signals: transmit data, receive data, and two control signals, allowing for flow control using RTS and CTS of a virtual COM port. The GND on the RS-422 port is electrically insulated with high voltage resistance from the GND on the computer side with the USB port. With a wide operating temperature range and a noise-resistant metal housing, it is ideal for factory devices and inspection systems that require high reliability.
Price information
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Price range
P2
Delivery Time
P1
※Standard stock available.
Applications/Examples of results
It is used in systems utilizing laptops without COM ports (RS-232C) and for capturing communication data flowing through RS-422 lines in factories. Additionally, it has been widely adopted as a recommended product for environmental measurement devices and manufacturing equipment from major manufacturers.
Line up（4）
| Model number | overview |
|---|---|
| SI-35USB | USB/RS485 converter |
| SI-55USB | USB/RS232 converter |
| LE-US232B | Low-cost serial USB converter |
| LE-US232BS | Low-cost USB serial converter (short type) |
catalog（1）
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CAD data（1）
| Model number | overview | File |
|---|---|---|
| SI-20USB |
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Company information
LINEI Corporation is a venture company established by former members of the electronic device development team at Sekisui Chemical Co., Ltd., with investment from the Sekisui Venture Fund. Since October 2000, the electronic device business of Sekisui Electronics Co., Ltd. has been succeeded by LINEI Corporation. The company is well-known for its user-friendly compact communication measuring instruments in the "LINEI" series and its communication converters in the "SI" series, which offer flexible system compatibility.
