ISA 2-Port RS-232/422/485 Serial Card w/SD and 16850

This ISA card, model 3PXCC2B, offers most every option possible in a 2-port serial card. Model 3PXCC2B can be configured for any I/O address and any IRQ. Each port can be independently configured for RS-232, RS-422, or RS-485 data protocol. The Quadruple Clock Speed option is included, allowing baud rates up to 460.8kbps baud. The 3PXCC series will support data rates to 460.8kbps baud in RS-422/485 modes and 230.4kbps baud in RS-232 mode. Enhanced Address Decoding is included, plus IRQ sharing capability to minimize hardware conflict potential.

The Automatic Send Data Control circuit takes the hassle out of RS-485 programming. All you have to do is send data out the port. The card handles the enabling and disabling of the transmitter. This feature works regardless of the operating system or program that you are running. This card uses the 16850 UART with 128-byte buffer. Each card comes with standard male DB9 connectors. No drivers are required for the 3PXCC series.