Timing i/o general-purpose up/down counter/timers – National Instruments NI PCI-6110 User Manual
Page 77
Appendix A
Specifications
© National Instruments Corporation
A-7
Digital logic levels
Power-on state........................................ Input (high-impedance)
Data transfers ......................................... Programmed I/O
Timing I/O
General-Purpose Up/Down Counter/Timers
Number of channels ............................... 2
Resolution .............................................. 24 bits
Compatibility ......................................... TTL/CMOS
Digital logic levels
Base clocks available ............................. 20 MHz, 100 kHz
Base clock accuracy ............................... ±0.01%
Max source frequency ............................ 20 MHz
Level
Min
Max
Input low voltage
Input high voltage
Input low current (V
in
= 0 V)
Input high current (V
in
= 5 V)
0.0 V
2.0 V
—
—
0.8 V
5.0 V
–320
µA
10
µA
Output low voltage (I
OL
= 24 mA)
Output high voltage (I
OH
= 13 mA)
—
4.35 V
0.4 V
—
Level
Minimum
Maximum
Input low voltage
Input high voltage
0 V
2 V
0.8 V
5 V
Input low current (V
in
= 0 V)
Input high current (V
in
= 5 V)
—
—
–320
µΑ
10
µΑ
Output low voltage (IOL = 24 mA)
Output high voltage (IOH = 13 mA)
—
4.35 V
0.4 V
—