National Instruments PC-LPM-16/PnP , Timing I/O

Appendix A Specifications
 National Instruments Corporation A-3 PC-LPM-16/PnP User Manual
Timing I/O
Number of channels ...........................3 counter/timers (1 dedicated to
analog input)
Resolution.......................................... 16 bits
Compatibility..................................... TTL, gate and source pulled
high with 4.7 k Ω resistors
Input logic low voltage.......................0.8 V max
Input logic high voltage......................2.2 V min
Output logic low voltage
at output current = 4.0 mA................. 0.45 V max
Output logic high voltage
at output current = -1.0 mA................ 3.7 V min
Base clocks available......................... 1 MHz ± 0.01%
Max source frequency........................ 8 MHz
Min source pulse duration.................. 60 ns
Min gate pulse duration...................... 50 ns
Data transfers..................................... Programmed I/O
Digital logic levels...............
Level Minimum Maximum
Input low voltage 0 V 0.8 V
Input high voltage 2 V 5.0 V
Input low current
(Vin = 0 V) —
± 10 µ A
Input high current
(Vin = 5 V) —
± 10 µ A
Level Minimum Maximum
Output low voltage
(Iout = 4 mA) — 0.4 V
Output high voltage
(Iout = 4 mA) 3.7 V —
a.Book : I.Appendix A Page 3 Wednesday, November 20, 1996 6:36 PM