Newest Multi-Interace PCI Serial Adapter for Automation & Control

March 26, 2024
PCI 8-Port RS-232, RS-422, RS-485 Serial Interface

Sealevel Systems announces the release of the 7804c PCI Serial Interface with eight field-selectable RS-232/422/485 asynchronous serial ports. The 7804c supports data rates exceeding 1 Mbps for industrial automation and control applications.

The range of configurability enabled by the 7804c PCI Serial Interface allows users to implement for standard serial COM port requirements via RS-232. RS-422 mode can be used for long distance device connections, or for applications where noise immunity and high data integrity are essential. And for applications that capture data from multiple peripherals along a network, RS-485 can be implemented. Flexibility is maximized as the ports can be assigned a variety of electrical interface combinations while relying on a single 7804c. For use in extreme environments, the 7804c features a wide operating temperature range of 0°C to 70°C. Sealevel’s SeaCOM software is included for easy installation and operation.
“Sealevel’s foundation is in I/O. As we’ve expanded product line to include embedded computers and carrier boards, we’ve never faltered in the pursuit of providing high-reliability I/O for our customers. The 7804c is a continuation of that commitment for our PCI serial solutions,” said Earle Foster, Sr VP of Sales for Sealevel.
7804c PCI Serial Interface

  • (8) serial ports, individually configurable for RS-232, RS-422, or RS-485
  • Ultra high-speed UART with 256-byte Tx and Rx FIFOs
  • Supports asynchronous data rates exceeding 1 Mbps
  • Bus-derived 125 MHz BRG and clock prescaler support wide range of baud rates
  • All modem control signals implemented in RS-232 mode
  • Automatic RS-485 enable/disable in hardware
  • 0°C to 70°C operating temperature range

The 7804c PCI Serial Interface is listed at $796 and available from stock; the serial card includes a 36-inch spider cable terminating to eight DB9M connectors. For more information about the 7804c, as well as Sealevel’s custom engineering and manufacturing capabilities, visit or call +1 864.843.4343.