National Instruments NI PCI-6110, NI PCI-6111 Timing I/O General-Purpose Up/Down Counter/Timers

Appendix A Specifications
© National Instruments Corporation A-7 NI PCI-6110/6111 User Manual
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 (Vin = 0 V)
Input high current (Vin = 5 V)
0.0 V
2.0 V
—
—
0.8 V
5.0 V
–320 µA
10 µA
Output low voltage (IOL = 24 mA)
Output high voltage (IOH = 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 (Vin= 0 V)
Input high current (Vin = 5 V)
—
—
–320 µΑ
10 µΑ
Output low voltage (IOL = 24 mA)
Output high voltage (IOH = 13 mA)
—
4.35 V
0.4 V
—