Appendix A Specifications - National Instruments PC-DIO-24 User Manual

Appendix A
Specifications
This appendix lists the specifications for the PC-DIO-24 board. These specifications are typical at 25 C, unless
otherwise stated. The operating temperature range is 0 to 70 C.
Digital I/O
Number of channels .................................................... 24 I/O
Compatibility .............................................................. TTL
Absolute max voltage input rating .............................. -0.5 to +5.5 V with respect to GND
Handshaking ................................................................ Requires 1 port
Power-on state ............................................................. Configured as inputs
Data transfers .............................................................. Interrupts, programmed I/O
Digital Logic Levels
Input Signals
Odd-numbered pins 1–47.........................................
Output Signals
Pin 49 (at +5 V)........................................................... 0.25 A max
Odd-numbered pins 1–47.........................................
Environment
Operating Temperature ............................................... 0 to 70 C
Storage Temperature ................................................... -55 to 150 C
Relative humidity ........................................................ 5% to 90% noncondensing
© National Instruments Corporation
Level
Input logic high voltage
Input logic low voltage
Input current
(0 < V in < 5 V)
Level
Output high voltage
(I out = -2.5 mA)
Output low voltage
(I out = 2.5 mA)
Output current
(V = 0.5 V)
OL
Output current
(V = 2.7 V)
OH
A-1
Min Max
2.2 V 5.3 V
-0.3 V 0.8 V
-1.0 A 1.0 A
Min Max
3.7 V 5.0 V
0.0 V 0.4 V
4 mA —
4 mA —
PC-DIO-24 User Manual