National Instruments NI 783xR - Manual (Page 50)

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