Features & Specifications

PCI Express 4-Port RS-232, RS-422, RS-485 Serial Interface

Part: 7404ec | Model: Ultra COMM+4.PCIe

Features

• Each port individually configurable for RS-232, RS-422, or RS-485

• Ultra high-speed UART with 256-byte Tx and Rx FIFOs

• Supports asynchronous RS-232 data rates to 230.4 Kbps and RS-

422/485 data rates exceeding 1 Mbps

• Bus-derived 125 MHz BRG and clock prescalar support wide range of

baud rates

• All modem control signals implemented in RS-232 mode

• Automatic RS-485 enable/disable in hardware

• RS-485 line termination, pull-up and pull-down resistors for each port

are selectable via dipswitches

• RS-485 ECHO can be enabled/disabled via dipswitches

• PCI Express X1 compliant

• Compatible with all standard size PCI Express slots

• Included 36″ cable terminates to four DB9M connectors (Item# CA143)

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SL9435 E22

Specifications

Board Connector

DB37M

Cable Connector(s)

DB9M (4)

Communications Chip

Ultra high-speed UART

Electrical Interface

RS-232, RS-422, RS-485

Humidity Range

10 – 90% Relative Humidity, Non-

Condensing

Host Interface(s)

PCI Express

Max Data Distance

50 feet (RS-232), 4000 feet (RS-485)

Max Data Rate

Exceeds 1 Mbps

Operating Temperature

0°C to 70°C (32°F to 158°F)

Oscillator

125 MHz BRG

PC Bracket

Standard Height

# of Ports

4

RoHS Compliant

Yes

Serial Connector(s)

DB9M

Storage Temperature

-50°C to 105°C (-58°F to 221°F)