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Appendix A Specifications for PCI and PXI Buses
© National Instruments Corporation A-7 6023E/6024E/6025E User Manual
Digital I/O
Number of channels
6025E.............................................. 32 input/output
6023E and 6024E............................8 input/output
Compatibility .........................................TTL/CMOS
DIO<0..7>
Digital logic levels
Power-on state........................................ Input (High-Z),
50 kΩ pull up to +5 VDC
Data transfers .........................................Programmed I/O
PA<0..7>,PB<0..7>,PC<0..7>
♦ 6025E only
Digital logic levels
Level Min Max
Input low voltage
Input high voltage
Input low current (V
in
=0V)
Input high current (V
in
=5V)
0V
2V
—
—
0.8 V
5V
–320 µA
10 µA
Output low voltage (I
OL
=24mA)
Output high voltage (I
OH
=13mA)
—
4.35 V
0.4 V
—
Level Min Max
Input low voltage
Input high voltage
Input low current (V
in
=0V,100kΩ pull up)
Input high current (V
in
=5V,100kΩ pull up)
0V
2.2 V
—
—
0.8 V
5V
–75 µA
10 µA
Output low voltage (I
OL
=2.5mA)
Output high voltage (I
OH
=2.5mA)
—
3.7 V
0.4 V
—