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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
(V
in
= 0 V)
—
±
10
µ
A
Input high current
(V
in
= 5 V)
—
±
10
µ
A
Level
Minimum Maximum
Output low voltage
(I
out
= 4 mA)
— 0.4 V
Output high voltage
(I
out
= 4 mA)
3.7 V —
a.Book : I.Appendix A Page 3 Wednesday, November 20, 1996 6:36 PM