National Instruments PC-LPM-16/PnP User Manual page 45

Timing I/O
National Instruments Corporation
Digital logic levels ...............
Number of channels ........................... 3 counter/timers (1 dedicated to
Resolution .......................................... 16 bits
Compatibility ..................................... TTL, gate and source pulled
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
Level
Input low voltage
Input high voltage
Input low current
(V in = 0 V)
Input high current
(V in = 5 V)
Level
Output low voltage
(I out = 4 mA)
Output high voltage
(I out = 4 mA)
analog input)
high with 4.7 k
A-3
Appendix A Specifications
Minimum Maximum
0 V 0.8 V
2 V 5.0 V
— 10 A
— 10 A
Minimum Maximum
— 0.4 V
3.7 V —
resistors
PC-LPM-16/PnP User Manual