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7204e Board with Included DB25 Female to (2) DB9 Male Cable (Item# CA203)
7204e Board with Included DB25 Female to (2) DB9 Male Cable (Item# CA203)

Part# 7204e

(Ultra-COMM+2.422.PCIe)

Low Profile PCI Express 2-Port RS-422, RS-485 Serial Interface


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$189.00

$189.00




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The 7204e low-profile PCI Express serial interface provides two serial ports configurable for RS-422 or RS-485. Each serial port utilizes a 16C950 UART with 128-byte Tx/Rx FIFOs that enables data rates to 921.6K bps for reliable high-speed communications in data intensive applications. This high-performance UART includes 9-bit framing support and is fully software compatible with legacy 16550 applications. In addition, the 14.7456 oscillator and UART's flexible clock prescalar supports the widest range of standard and non-standard baud rates.

In RS-485 mode, the transmitter is automatically enabled in hardware, eliminating the need for application software control. This allows the 7204e to be used with standard serial communications applications and removes the risk of bus contention and data corruption.

The Sealevel SeaCOM software driver and utilities make installation and operation easy using Microsoft Windows operating systems.

The 7204e is a PCI Express X1 board compatible with any low profile PCI Express slot. If you have a standard size PCI Express slot, be sure to select the standard profile bracket. The board includes a 36 inch cable that terminates to two DB9M connectors.
Host Interface(s) PCI Express
# of Ports 2
Electrical Interface RS-422, RS-485
RoHS Compliant Yes
UART Series 950 UART
Serial Connector(s) DB9M
PC Bracket Low Profile
Communications Chip 16C950
Oscillator 14.7456 MHz
Max Data Rate 921.6K bps
Max Data Distance 4000 feet
Cable Connector(s) DB9M (2)
Board Connector DB25M
Dimensions 5.75 (L) x 2.54 (W)
Operating Temperature 0 - +70C
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
  • • Compliant with RoHS and WEEE directives
  • • Each port individually configurable for RS-422 or RS-485
  • • 16C950 buffered UARTs with 128-byte FIFOs
  • • Each port supports data rates to 921.6K bps
  • • Oscillator and clock prescalar support wide range of baud rates
  • • Supports 9-bit protocol framing
  • • PCI Express X1 compliant
  • • Compatible with all low profile PCI Express slots
  • • Included 36" cable terminates to two DB-9M connectors (Item# CA203)




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