• Two serial ports
• Porta are individually configurable as either RS-422 or RS-485
• Speeds to 921.6 Kbps simultaneously on both ports
• Auto enable/disable of RS-422/485 transmitter
• Full duplex and half duplex modes supported
• Detachable cable with DB-9M connectors.
• Low power requirements
• Windows 95, 98, Me, NT 4, 2000, XP, and Linux supported.
• VCS Async Ready
• 5 year warranty by Quatech

RS-422/485 Serial PCMCIA Card:
DSP-200/300 Dual Port

Quatech RS-422/485 asynchronous serial PCMCIA cards are an ideal solution for adding additional ports to full and half duplex multi-drop systems. Because they share electronic fundamentals with native bus architectures such as PCI and ISA, they function exactly like standard COM ports and can be addressed as such by most application software. In addition, their small size and the fact that the card itself can be left inside the computer at all times, make them practical choices for the most ported portable systems.

Quatech RS-422/485 serial PCMCIA cards provide many unique features that make them particularly robust and easy to use.

The port is configurable as RS-422 or RS-485; and on multiport cards any combination of RS-422 and RS-485 ports can be used.

For high performance is heavy multi-tasking environments, the card is implemented with 16550 UARTs containing 16-byte FIFOs. The card is expected to be upgraded to 16750 UART for 921.6 Kbps soon.

They also provide a unique Auto-Toggle mode by which the hardware itself can regulate data flow in Half-Duplex mode by only driving lines while actively transmitting--providing increased speed and convenience over the older software controlled method. In addition, the cards also conserve system resources with their low power requirements that maximize battery life.

They also have selectable and shareable interrupts, further extending a portable or handheld system's limited resources. And their multi-platform operating support makes them the single practical choice for a diverse fleet of portable systems.

Quatech RS-422/485 asynchronous serial PCMCIA cards are an ideal solution for adding additional ports to a wide variety of portable systems. These cards share fundamental design architecture similar to PCI and ISA so that they function exactly like the standard COM port(s) on system motherboards.

For high performance is heavy multitasking environments, the cards are implemented with 16750 UARTs containing 64-byte FIFOs.

This along with Quatech's special clock-multiplying feature enables data transfer rates as high as 921.6 kbps.

The card also conserve system power to help maximize battery life.

It also has selectable and shareable interrupts, further extending a portable or handheld system's limited resources.

Price Ea.

$US 129.00 (card only), or $129.00 for registered ViewComm Async owners.

SKU: DSP-200-300

 PDF Data Sheet
 Purchase
 Quatech Product Selection Matrix Guide
 Drivers Download
 PDF Manual Download
 Show pinout of DB-9 connector.

Detailed Specifications

• Bus Interface: 16-bit PCMCIA, Release 8 and backward compliant
• OS Support: Windows CE/9x/Me/NT/2000/XP, Linux, OS/2
• 921.6 Kbps (max*)
• Transceivers: 3491 or compatible
• Drivers: Differential Voltage: +/- 3.3V. Transition time (TLH) 52 ns. (typ). (THL): 60 ns (typ)
• Cables: Removable Cable with DB-9 male (see connector pinout)
• Receive Buffers: Differential input threshold: +/- 0.2V, Voltage range: -7V to +12V common mode input. Transition time (THL-TLH): 65 ns. (typ)
• Environment: Operating: 0°C to 70°C. Storage: -50°C to 80°C. Humidity: 10% to 90%
• Power Requirements: SSP compatible with 3.3V and 5V systems. 30mA @ 5V (typ), 45mA (max)
• Size: Type II PCMCIA Card package
• Certifications: CE, FCC Class B