AT-DIO-32HS

National Instruments AT-DIO-32HS High-Speed Digital I/O Board
Features

• 32 (5 V TTL/CMOS) Digital Input/Output Lines
• 20 MHz (80 Mbytes/s) Maximum Transfer Rate
• Start and Stop Triggering
• Pattern and Change Detection

The AT-DIO-32HS is part of a family of NI 6533 devices that are parallel digital pattern I/O and handshaking interfaces for PCI, PXI, and PCMCIA. They incorporate the National Instruments DAQ-DIO ASIC, specifically designed to deliver high performance on plug-in DIO devices. The NI 6533 devices perform pattern I/O, handshaking, and unstrobed I/O at speeds up to 20 MHz.

The 32 digital I/O lines are divided into four 8-bit ports. For pattern I/O or handshaking, the ports can be grouped into two 8-bit or 16-bit groups, or a single 32-bit group. Each I/O line is 5 V TTL/CMOS compatible. When configured for output, each data line can sink or source up to 24 mA when set logic low or high, respectively. When configured as inputs, the 653x data lines are diode-terminated to damp line reflections.