PHONE: 949.338.8078
FAX: 949.495.4648
30322 Grande Vista Ave
Laguna Niguel, CA 92677
Dual Port RS232/RS422/RS485

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  • An alternative that provides the same capability, but, only one port, is the CF428 inserted inside a CA101 or a CA201 (PCMCIA to CF adapter). Please view the suggested substitute items online, to personally determine if they will work for you.
  • See the CF428 online at:
  • The CA101 & CA201 are listed in the "Accessories" of the CF428's online shopping cart. Double-click on either item to view the webpage.
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  • Dual 16C550 UART with 16-byte TX and RX FIFOs for high speed and reliable communications.
  • Switchable RS232 or RS422/RS485 mode on each channel.
  • Switchable full or half duplex RS485 mode per channel with in-card connection of TX and RX signals in half duplex mode. RS422 mode includes differential RTS and CTS modem control signals and permanently enabled TX driver and receiver.
  • Switchable per channel between auto TX enable and RTS override TX enable when in RS485 half duplex mode.
  • Switchable local TX character echoing when in RS485 half duplex mode (setting common to both ports).
  • Hardware switchable baud rate multiplier allows either industry standard rates up to 115KBaud in x1 mode or up to 921Kbaud in x8 special drivers needed for faster rates (setting common to both ports).
  • Full fail-safe open/short circuitry on RS485 inputs.
  • Supports 5/6/7/8 data bits, odd/even/no parity, 1/1.5/2 stop bits, baud rates including 2400, 4800, 9600, 19200, 57600, 115200 in x1 mode, and 8 times these rates in x8 mode i.e. up to 921600 baud.
  • Low power consumption: Typical 55mA at 5V, with support for reduced power sleep mode (depends on O.S.). Will also work at 3.3V with true RS232/422/485 levels for hosts that cannot supply 5V.
  • ESD protected RS232 drivers and receivers for protection of your card and PC.
  • Supplied with 300mm Type48 cable. Connector latches into PC Card for security. Dual DB25 Males with female screwlocks and industry standard pinout for direct attachment of terminal equipment.
  • Can be fitted with a unique Strain Relief Assembly to ruggedize the PC Card to cable connection (optional extra), product code " TSRA1-DAQ".
  • Also available with robust direct cable termination instead of Type 48 cable, product code SL385R, MOQ may apply.

    The SL385 is a unique dual port multi-standard asynchronous serial card for your laptop, PDA, or desktop (using one of Elan's Desktop PCMCIA adapters). For convenience and flexibility, the SL385 can have each port set individually to RS232 or to RS422/RS485 mode. Further configurations allow full and half duplex operation, and a choice of RS485 half duplex transmitter enable modes. The card automatically configures to become two more COM ports by using the built-in O.S. drivers that are tried and tested and are optimized to work in the Windows environment.

Program / Software Information
    Supported by standard drivers in Windows95, 98, 98SE, Me, 2000, XP. Card comes with Elan's Card Center Pro software that installs INF scripts and sample code.

    Automatic O.S. recognition and configuration. Hot swappable PC Card 5.0 compliant true multi-function Type II design.

PDF Manual
    Download SL385 Manual

    You will need the Adobe Acrobat Reader to view this file.

Ordering Information