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TTL-to-RS485 Converter, 2x5-pin In, 2-Screw Out


ADM2483 isolated RS485 transceiver
Converts TTL level logic to RS485 levels
Size: 44 × 26 mm
Board Support: SBC-SAM9G45 | NET-SAM9X25


This TTL-to-RS485 converter features a 2×5-pin TTL input header and a two-pole screw terminal output port. The pinout of the input pins makes it plug-in compatible with the SBC-SAM9G45 development board's COM0-COM3 expansion headers. A ribbon cable is provided to make that connection. However, the standard 2.54mm pin pitch makes it easy to wire up to practically any development system with TTL UART headers

Input interface

TTL level input, 2×5-pin 2.54mm (0.1") pitch header.

Pin Signal Name Pin Signal Name
1 NC 2 RXD
3 TXD 4 NC
5 GND 6 NC
9 VDD5V 10 VDD33(3.3V)

Output interface

RS485 level, screw terminal connector, 3.81mm pitch.

Pin Signal Name
1 RS485B
2 RS485A


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1 TTL-to-RS485 Converter  $15USD

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