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Digital I/O
© National Instruments Corporation
Slew rate................................................. 10 V/
Noise ...................................................... 150
Glitch energy
at midscale transition ............................. ±200 mV for 3
Number of channels
NI 7830R......................................... 56
NI 7831R......................................... 96
NI 7833R......................................... 96
Compatibility ......................................... TTL
Digital logic levels
Level
Input low voltage (V
Input high voltage (V
Output low voltage (V
where I
= –I
(sink)
OUT
max
Output high voltage (V
where I
= I
(source)
OUT
max
Maximum output current
I
(source)..................................... 5.0 mA
max
I
(sink) ........................................ 5.0 mA
max
Input leakage current.............................. ±10 µA
Power-on state........................................ Programmable, by line
Data transfers ......................................... Interrupts, programmed I/O
Protection
Input ................................................ –0.5 to 7.0 V
Output ............................................. Short-circuit (up to eight lines
)
IL
)
IH
),
OL
),
OH
may be shorted at a time)
A-5
Appendix A
Specifications
µ
s
µ
V
, DC to 1 MHz
rms
µ
s
Min
Max
0.0 V
0.8 V
2.0 V
5.5 V
—
0.4 V
2.4 V
—
NI 783xR User Manual
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