Appendix A Specifications
© National Instruments Corporation A-5 NI PXI-7831R User Manual
Digital I/O
Number of channels
NIPXI-78 31R.................................96 i nput/output
Compatibility......................................... TTL
Digital logic levels
Maximum output current
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)
Reconfigurable FPGA
Number of logic slices........................... 5, 120
Equivalent number of logic cells.... 11, 520
Available embedded RAM.....................16, 384 KB
Timebase................................................40 MHz
Level Min Max
Input low voltage (VIL)
Input high voltage (VIH)
0.0 V
2.0 V
0.8 V
5.5 V
Output low voltage (VOL),
where IOUT = –Imax (sink)
Output high voltage (VOH),
where IOUT = Imax (source)
—
2.4 V
0.4 V
—
Driver Type (Software Selectable) Imax (Source) Imax (Sink)
Default 5.4m A 5.0mA
Slow 1.9mA 1.9 mA
Fast 16 mA 14 mA