National Instruments PCI-6509, Руководство пользователя

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