National Instruments NI USB-6008 - Page 22

NI USB-6008/6009 User Guide and Specifications 22 ni.com
Slew rate.................................................................1 V/μs
Short circuit current ...............................................50 mA
Absolute accuracy (no load)
Typical............................................................7 mV
Maximum at full scale ...................................36.4 mV
Digital I/O
Digital I/O lines
P0.<0..7>........................................................8 lines
P1.<0..3>........................................................4 lines
Direction control ....................................................Each channel individually programmable as input
or output
Output driver type
1
NI USB-6008 .................................................Open collector
NI USB-6009 .................................................Each channel individually programmable as
open collector or active drive
Compatibility .........................................................TTL, LVTTL, CMOS
Absolute maximum voltage range .........................–0.5 to 5.8 V with respect to GND
Pull-up resistor .......................................................4.7 kΩ to 5 V
Power-on state........................................................Input
Digital logic levels
External Voltage
+5 V output (200 mA maximum)
Minimum .......................................................+4.85 V
Typical............................................................+5 V
+2.5 V output (1 mA maximum) ...........................+2.5 V
+2.5 V accuracy .....................................................0.25% maximum
Reference temperature drift ...................................50 ppm/°C maximum
1
This document uses NI-DAQmx naming conventions. Open-drain is called open collector and push-pull is called active drive.
Level Min Max
Input low voltage
Input high voltage
Input leakage current
–0.3 V
2.0 V
—
0.8 V
5.8 V
50 μA
Output low voltage (I = 8.5 mA)
Output high voltage
Active drive, I = –8.5 mA
Open collector, I = –0.6 mA, nominal
Open collector, I = –8.5 mA, with external pull-up resistor
—
2.0 V
2.0 V
2.0 V
0.8 V
3.5 V
5.0 V
—