Digital I/O

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Suitable Digital I/O PCIe card

I am looking for a PCIe card that can receive Digital Input signal and send Digital Output signal to another device. The logic high is preferably 5V and logic low is preferably 0V.


I have looked through the list and identified PCIe-6509. Can anyone advise on whether this model will work for me?


I have looked at the user guide and specifications and it seems like PCIe-6509 and PCI-6509 have different logic high and logic low.


I cannot understand the logic high and low for PCIe-6509.




Does this mean that the voltage is the same for both logic high and low, but only the current direction is different?


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Good choice of DIO card, but be aware of limitations too, in terms of the number of dynamic waveforms capable channels required, not all channels are waveform or HW timed capable.


Yes, VOL, VOH levels are different for PXI/PCI and PCIe.


In the specifications, worst case voltage levels are defined,


This says that each DO channel source/sink 24mA, for example, your external device is a relay that consumes 24mA, in this case, when you source Logic High, it will be at least 3.4V guaranteed (but it will still try to source 5V) and similarly if there is a load sinking into the DO, then at 24mA it will be able to maintain the voltage under 0.78V.


Do you know what kind of current does your 'external device' will consume from these DOs?



Semiconductor Validation & Production Test
Soliton Technologies
LabVIEW + TestStand + TestStand Semiconductor Module (2013 - 2020)
NI STS for Mixed signal and RF
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