Digital Logic Levels (Pci/Pxi-6509); Digital Logic Levels (Pcie-6509) - National Instruments PCI-6509 User Manual

Digital Logic Levels (PCI/PXI-6509)

Input Signals
The maximum input logic high and output logic high voltages assume a Vcc supply voltage of
5.0 V. Given a Vcc supply voltage of 5.0 V, the absolute maximum voltage rating for each I/O
line is –0.5 V to 5.5 V with respect to GND.
Input voltage (V )
in
Input logic high voltage (V
Input logic low voltage (V
Output Signals (Vcc = 5 V)
High-level output current (I
Low-level output current (I
Output voltage (V
out
Output high voltage (V
Output low voltage (V
The total current sinking/sourcing from one port cannot exceed 100 mA.
With a load, use the following equation to determine the power consumption on a 5 V rail. In the
equation, j is the number of channels you are using to source current.

Digital Logic Levels (PCIe-6509)

Input Signals
Input voltage (V )
in
Positive-going threshold (VT+)
22 | ni.com | PCI/PXI/PCIe-6509 User Guide and Specifications
Level
)
IH
)
IL
Level
)
OH
)
OL
)
), at –24 mA
OH
), at 24 mA
OL
j


250 mA current sourced on channel i
+
i 1
=
Level
Minimum
0 V
2 V
—
Minimum
—
—
0 V
3.7 V
—

Minimum
0 V
—
Maximum
Vcc
—
0.8 V
Maximum
–24 mA
24 mA
Vcc
—
0.55 V
Maximum
5 V
2.2 V