PCMCIA RS-232 Serial Interface Card

Part: 3603   Model: PC-SIO-232

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This product is classified as legacy and is not recommended for new or high volume designs.

Sealevel will support legacy products through technical and warranty support, software drivers and product manuals. Please contact Sales for further information. For new product designs, we recommend the 2105R.

The 3603 PCMCIA serial interface card provides one RS-232 serial port capable of data rates to 115.2K bps. The board implements all modem control signals for maximum compatibility with a wide range of peripherals. The 3603 utilizes a 16C550 UART that provides 16-byte Tx/Rx FIFOs and ships with a 12-inch detachable cable that terminates to a DB25M connector.

If you need a DB9M cable, order the 3603-DB9.

Note: This item has a minimum order quantity (MOQ) of 25 units.


Additional information

Communications Chip


Electrical Interface


Humidity Range

10 – 90% Relative Humidity, Non-Condensing

Host Interface(s)


Max Data Distance

50 feet

Max Data Rate

115.2K bps

Operating Temperature

0°C to 70°C (32°F to 158°F)

# of Ports


RoHS Compliant


Serial Connector(s)


Storage Temperature

-50°C to 105°C (-58°F to 221°F)

UART Series

550 UART

  • Compliant with RoHS and WEEE directives
  • Type II, 16-bit PCMCIA 2.01 (JEIDA 4.1) compliant form factor
  • 16C550 buffered UART with 16-byte FIFOs
  • Data rates to 115.2K bps
  • All modem control signals implemented
  • Includes 12″ detachable cable with DB25M connector (Item# CA164)

Windows Software

Software: SeaCOM - Windows

Linux Software

Software: SeaCOM - Linux


Manual: 3603


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