National Instruments DAQCard-1200 Timing I/O

Appendix A Specifications
DAQCard-1200 User Manual A-6 © National Instruments Corporation
Digital logic levels
Protection................................................–0.5 to 5.5 V powered on,
±0.5V powered off
Handshaking...........................................3 wire, 2 port
Data transfers..........................................Interrupts, programmed I/O
Timing I/O
Number of channels................................3 counters/timers
Digital logic levels
Level Min Max
Input low voltage –0.3 V 0.8 V
Input high voltage 2.2 V 5.3 V
Output low voltage
(Iout = 2.5 mA) —0.4 V
Output high voltage
(Iout = –40 µA)
(Iout = –2.5 mA) 4.2 V 3.7 V — —
Output leakage current
0 ≤ Vout ≤ Vcc –10 µA 10 µA
Level Min Max
Input low voltage –0.3 V 0.8 V
Input high voltage 2.2 V 5.3 V
Output low voltage
(Iout = 4 mA) —0.45 V
Output high voltage
(Iout = –1 mA) 3.7 V —