RS232 to RS485 Isolated converter

DAT3580 2W

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RS232 to RS485 Isolated converter DAT35802W.
• UL, CSA, CE.
• Modbus RS232 to Modbus RS485.
• Automatic Baud rate up to 115.2 Kbps.
• DC or AC Power.
• Isolation.
General Description

The DAT3580-2W is an isolated serial interface converter between asynchronous RS-232 and RS-485/RS-422 communication lines. It guarantees full galvanic isolation between the power supply, RS-232, and RS-485/RS-422 ports, eliminating ground-loop effects and ensuring reliable operation even in harsh industrial environments.

The device supports both RS-422 full-duplex (4-wire) and RS-485 half-duplex (2-wire) interfaces, with baud rates up to 115.2 kbps. Transmission is asynchronous and transparent — no need to configure protocol, data format, or baud rate. Handshake commands such as RTS/CTS are not required on the RS-232 side.

Designed for DIN rail mounting, the DAT3580-2W features a slim 22.5 mm self-extinguishing enclosure. Removable screw-terminal connections simplify installation, wiring, and device replacement. Multiple units can be mounted side-by-side for high-density applications, depending on thermal dissipation.

The DAT3580-2W complies with UL 61010-1 (USA) and CSA C22.2 No 61010-1 (Canada) standards, ensuring suitability for international markets.

INPUT OUTPUT POWER SUPPLY
RS232 RS485 Power Supply Voltage 18-30Vdc
Reverse polarity protection 60Vdc
CURRENT CONSUMPTION CONFIGURATION ISOLATION
Between 60 and 115 mA None Between Input/Comms/Power Supply 2000Vac.
EMC HOUSING TEMPERATURE
For Industrial environments Material self-extinguishing Operating Temperature 14°F +140°F -10°C +60°C
Immunity EN 61000-6-2 Dimensions W x H x T 4" x 4 3/4" x 3/4" Storage Temperature -40°F +185°F-40°C +85°C
Emission EN 6100-6-4 100 x 120x x 22.5 mm Humidity (non condensing) 0-90%
Weight 3 oz 90 g
DAT3580 2W Datasheet
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Applications
Drawings
Modbus Comms and Isolators

Specifications

Max distance  
Function RS232 to RS485
38400bps 1,2 Km
19200bps 2 Km
9600bps 3 Km
4800bps 4 Km
2400bps 5 Km
1200bps 7 Km
Number of Modules Up to 32
Switching time 150us
Power Supply 10 to 30Vdc
Sample Time 40 ms
Temperature rating: Operative -4°F +145°F -20°C +60°C
  Temperature Storage Temperature -40°F +170°F -40°C +85°C.
Humidity: (non condensing) 0-90%.
Housing: Material self-extinguishing.
Dimensions: W 4 L 4 3/4 H 1" 100 mm X 120 mm x 22mm
Weight: 7 oz 160 g.
EMC. For industrial environments.
  Immunity: EN 61000-6-2.
  Emission: EN 61000-6-4.
Drawings

Power Supply and Connections

Power Supply  
DC Power Positive H Negative G
AC Power J and I

RS232 to RS485 Isolated converter wiring Diagram.

Applications

DAT3580 Custom products

What is a DAT 3580 21003?
The DAT 3580 21003 is a special version that the retention time TX 3ms the Rload on the RS485 port is 560 Ohm.

Frequently Asked Questions about DAT3580-2W

What is the DAT3580-2W?
The DAT3580-2W is an isolated serial interface converter between RS-232 and RS-485/RS-422 communication lines.
What interfaces does it support?
It supports RS-232 to RS-422 full-duplex (4-wire) and RS-232 to RS-485 half-duplex (2-wire) conversion.
What is the maximum baud rate?
The DAT3580-2W supports asynchronous transmission up to 115.2 kbps.
Does it require protocol or handshake settings?
No. Transmission is asynchronous and transparent. No settings for protocol, data format, baud rate, or handshaking (RTS/CTS) are required.
Does the DAT3580-2W provide isolation?
Yes. The device provides galvanic isolation between the power supply, RS-232, and RS-485/RS-422 ports.
What are the mechanical specifications?
The device is housed in a 22.5 mm self-extinguishing DIN rail enclosure with removable screw terminals for easy wiring and replacement.
Is it certified?
Yes. It complies with UL 61010-1 (USA) and CSA C22.2 No 61010-1 (Canada).
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