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Specifications
Digital I/O
© National Instruments Corporation
This appendix lists features and specifications for your 653X devices and
the PCI/PXI-7030/6533 device. Specifications are typical at 25 °C unless
otherwise noted.
Number of channels ............................... 32 input/output;
Compatibility ......................................... TTL/CMOS (standard or
Hysteresis ............................................... 500 mV
Digital logic levels
Level
Input low voltage
Input high voltage
Input low current for data lines
(V
= 0.4 V)
in
DPULL high
DPULL low
Input high current for data lines
(V
= 2.4 V)
in
DPULL high
DPULL low
Input low current for control lines
(V
= 0.4 V)
in
CPULL high
CPULL low
4 dedicated output and control;
4 dedicated input and status
wired-OR)
A-1
A
Min
Max
0 V
0.8 V
2 V
5 V
–70 µA
—
–10 µA
—
10 µA
—
40 µA
—
—
–2.5 mA
–200 µA
—
653X User Manual
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