PCI-20087W-1A Overview

The PCI-20087W-1A Digital I/O Board provides forty channels of TTL-compatible signals in five groups of eight bits each. You can program each 8-bit port independently via software for use as either an input or an output port. You can also synchronize data transfer on two of these ports to external hardware events by using the channels in the fifth port as handshake control lines. Because of its small size, the PCI-20087W-1A can be installed in "short" slots.

Features & Benefits

40 Digital I/O Channels with TTL-Compatible Levels
Programmable as Inputs or Outputs in 8-Bit Ports
Software Programmable, No Jumpers
High Current-Sink (24mA) and Source (15mA) Capability
Synchronization/Handshaking Capability

Specifications

Parameter	Conditions	Specifications
Digital I/O
Number of Ports Fully Buffered (I/O) Non-Buffered (I/O or Handshake)	8 channels (bits) each	5 32 channels 8 channels
Input Levels		TTL
Output Levels Buffered Ports Source Current Sink Current Non-buffered Ports Source Current Sink Current	Vout=high Vout=low Vout=high Vout=low	15mA 24mA 200µA 1.7mA
System Throughput (Hardware Only)
Digital I/O		400 kBytes/second
Interrupts
Sources		Up to 3
PC Levels		2 through 7
Physical Characteristics
Power Requirements	Vin=+5V	425mA maximum
Size	Length x Height>	5.0" x 4.2" (12.7cm x 10.7cm)
Operating Temperature Range		0 to 70° C