Isolated RS-232 & RS-485 Transceiver Modules

The SUE – SUJ series of isolated COM port transceiver modules are converters from an UART TTL-level interface to either RS-485 or RS-232 cable connection. The small modules are optionally available with Micro-D, RJ45, or D-Sub front connectors. All modules are equipped with a 2.0mm socket for either direct mounting to a suitable carrier card, or alternatively to be attached by means of a micro ribbon flat cable assembly. With their dimensions of 59mm (length) and 20mm (width), up to four SUE – SUH modules (Micro-D, RJ45) fit into a 3U/4HP front panel. The SUI – SUJ modules are provided with a classic D-Sub connector, which requires 31mm front space. All modules were designed for highest data rates and optimum isolation and ESD characteristics. The industrial temperature range makes them suitable for rugged applications (e.g. IoT, edge computing).

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General Information


  • Choice of isolated EIA/TIA asynchronous data interfaces
  • Transceiver modules available for RS-232 (SUE-RS232, SUG-RS232, SUI-RS232)
  • Transceiver modules available for RS-485 (SUF-RS485, SUH-RS485, SUJ-RS485)
  • Choice of front connectors
  • Transceiver modules available with Micro-D (SUE-RS232, SUF-RS485)
  • Transceiver modules available with RJ45 (SUG-RS232, SUH-RS485)
  • Transceiver modules available with D-Sub (SUI-RS232, SUJ-RS485)
  • 2.0mm pitch dual row TTL interface socket connector (RX, TX, CTS, RTS)
  • Direct mounting on a carrier card (mating pin header or socket w. pin stacker)
  • Alternate attachment via flat cable assembly
  • Two modules can be stacked on top of each other (back to back) using the same pin header
  • Two modules can be attached via single flat cable assembly
  • Power requirements +3.3V, maximum consumption 0.3W (RS-232), 1.0W (RS-485)
  • Dimensions 59mm x 20mm (SUE-SUH), 59mm x 31mm (SUI-SUJ)
  • CompactPCI® Serial carrier card for up to eight modules available (SU3-ENSEMBLE)
  • CompactPCI® Serial rear I/O carrier card for up to eight modules available (SUC-RIO)

Simplified Block Diagram

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