National Instruments VXI-MIO Series , Digital I/O, Timing I/O,

Appendix A Specifications for VXI-MIO-64E-1
 National Instruments Corporation A-7 VXI-MIO Series User Manual
Onboard calibration reference
Level...........................................5.000 V ( ± 0.5 mV) (actual value
stored in EEPROM)
Temperature coefficient.............. ± 0.6 ppm/ ° C max
Long-term stability..................... ± 6 ppm/
Digital I/O
Number of channels .......................... 8 input/output
Compatibility.................................... TTL/CMOS
Power-on state................................... Input (High-Z)
Data transfers.................................... Programmed I/O
Timing I/O
Number of channels .......................... 2 up/down counter/timers,
1 frequency scaler
Resolution
Counter/timers............................ 24 bits
Frequency scalers........................4 bits
Compatibility.................................... TTL/CMOS
Base clocks available
Counter/timers............................ 20 MHz, 100 kHz
Digital logic levels............
Level Min Max
Input low voltage 0 V 0.8 V
Input high voltage 2 V 5 V
Input low current
(Vin = 0 V) — -320
µ A
Input high current
(Vin = 5 V) — 10 µA
Output low
voltage
(IOL = 24 mA) — 0.4 V
Output high
voltage
(IOH = 13 mA) 4.35 V —
1,000 h