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Two Port RS-232 Serial Low Profile PCI Board
Low Profile PCI RS-232 Board
US Prices
CDN Prices

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Description  Your ALT-Text here Specifications  Your ALT-Text here Ordering Information  Your ALT-Text here Technical Support  Your ALT-Text here Download PDF


 Your ALT-Text here Universal PCI Connector, 3.3V or 5V
 Your ALT-Text here MD1 Low Profile PCI Board
 Your ALT-Text here Two Independent RS-232 serial interfaces
 Your ALT-Text here Speeds to 460.8 kbps
 Your ALT-Text here 16550 UARTs with 16-byte FIFOs
 Your ALT-Text here All ports share a single PCI interrupt
 Your ALT-Text here Standard D9 connectors via included cable
 Your ALT-Text here Windows 95/98/Me/NT/2000 and OS/2 supported

 Description Return to top of page

Low Profile PCI was designed to provide greater flexibility for embedded systems, thin-clients, and desktop and server environments. The boards are mechanically similar to standard PCI boards, but use a shorter board and a different mounting bracket. They are designed to fit into systems as low as 3.350" without using riser cards. The boards are built on 32-bit addressing, and can be used in standard PCI backplanes or with specialized Low Profile PCI brackets.

Quatech's DSCLP-100 provides two independent RS-232 ports to a host computer via a single Low Profile PCI slot. The boards are built using the smallest (MD1) Low Profile board specification, which allows them to be used in even the smallest size systems.

The boards also use a universal PCI connector compatible with both the 3.3V connector key required by the specification and the 5V connection used by older PC and thin client systems. This means that they can be used with current equipment, and will not need to be replaced as systems are upgraded.

The channels are addressed in a continuous 16-byte I/O block for simplified software access. And, all channels may also share one PCI interrupt. An interrupt status register is available for determining the interrupt source. All PCI registers are properly implemented, and users can be assured that Quatech boards will be good citizens on the PCI bus.

The boards are implemented with 16550 UARTs containing 16-byte FIFOs. They have a clock multiplying feature allowing them to achieve data rates as high as 460.8 kbps. The high clock speeds and deep FIFOs will greatly reduce CPU overhead, making these boards an ideal choice for heavy multi-tasking environments.

The DSCLP-100 comes with a cable providing two D9 ports. Windows 95/98/Me/NT/2000 and OS/2 are supported.


 Specifications Return to top of page


BUS INTERFACE: PCI bus specification 2.1


460.8 kbps up to 900 pF load
230.4 kbps up to 1800 pF load
115.2 kbps up to 4300 pF load

PORTS: 2 independent RS-232 serial ports


Two 16550 UARTs with 16-byte FIFOs

RS-232 Transceivers : ICL3245CA or compatible

Input Voltage: 3.3V
Transmitter Outputs:

High Level Output: 5V (min) to 5.4V (typical)
Low Level Output: -5V (min) to -5.4V (typical)
Transmitter Skew: 25ns

Receiver Inputs:

Input Voltage Rating: 25V
Receiver Skew: 50ns

POWER REQUIREMENTS: 3.3V 260mA (typical)
TEMPERATURE: Operating 0 to 70°C, Storage -50 to 80°C
HUMIDITY: 10% to 90%

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The DSCLP-100 has an on-board D25 connector, the included cable provides two D9 male serial ports. Each D9 male serial port has the following pinout:

 Your ALT-Text here


PIN 1: Carrier Detect
PIN 2: Data Input
PIN 3: Data Output
PIN 4: Data Terminal Ready
PIN 5: Signal Ground
PIN 6: Data Set Ready
PIN 7: Request To Send
PIN 8: Clear To Send
PIN 9: Ring Indicator




Windows 95/98/NT/2000 and OS/2.

CONFIGURATION: Windows does not assign COM1-COM4 to ports addressed at nonstandard locations. Therefore, the DSCLP will install in the lowest available address block over COM4.


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Ordering Information Return to top of page

DSCLP-100 Two Port RS-232 Serial Low Profile PCI Board


Related Products Return to top of page

SSCLP-100 One Port RS-232 Serial Low Profile PCI Board
QSCLP-100 Four Port RS-232 Serial Low Profile PCI Board
SSCLP-200/300 One Port RS-422/485 Serial Low Profile PCI Board
DSCLP-200/300 Two Port RS-422/485 Serial Low Profile PCI Board
QSCLP-200/300 Four Port RS-422/485 Serial Low Profile PCI Board--Call for Price and Availablity
CP-DSCLP-100 Spare Two Port DB-9 Male Connector Cable for DSCLP-100


Technical Support Return to top of page

If the following files do not provide the help you need, Quatech's Technical Support team can be reached at  604.925.6150   Weekdays 9AM to 5PM PST, or by e-mailing support .

 Your ALT-Text here DSCLP-100 Drivers, Utilities and Manuals
 Your ALT-Text here DSCLP-100 Technology Overviews and faqs

USA Office

Address: 1480 Gulf Road, Suite 837,
PO Box 1364
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027