The National Instruments PCMCIA-485 (Part Number: 777378-01) is a versatile single-port serial interface device designed for RS-485 and RS-422 protocols, making it ideal for applications requiring long-distance communication. This device facilitates the connection of up to 32 devices over serial cables up to 4000 feet in length, supporting high data rates of up to 115.2 kb/s. The PCMCIA-485 comes equipped with a cable that connects to a standard DB-9 type connector and includes various transceiver control modes for four-wire and two-wire configurations, enabling hardware flow control for adaptable topology management. Default operation in the four-wire mode maintains continuous transmission and reception capabilities.

Designed as a Type II PC Card, the PCMCIA-485 is compatible with most notebook computers and laptops, drawing its required 100 mA power from the PCMCIA slot without the need for additional power sources. For development, the device integrates seamlessly with application development environments (ADEs) such as LabVIEW and LabWindows/CVI and is supported by serial driver software for installation as a standard serial port in NI-VISA applications. The device measures 3.370 x 2.126 x 0.197 inches and operates within a temperature range of 0 to 70 °C, with a storage range of -40 to 120 °C. Humidity specifications include non-condensing conditions from 10% to 90% RH during operation and 5% to 90% RH during storage. Although the PCMCIA-485 has been marked as obsolete by National Instruments, it remains available for purchase and repair through Apex Waves. Each unit is backed by a three-year warranty, and user manuals are accessible for download. For pricing details, please contact a sales representative.