In article <3A34F6FE.6565503A@homer.ece.ohiou.edu>, Gorka Garcia
writes
>The Digital Output Specifications of my AT-AO-10 are:
>
>V OH output logic high voltage 2.4 V minimum
>V OL output logic low voltage 0.5 V maximum
>
>
>I OH output source current,
> logic high 2.6 mA maximum
>I OL output sink current,
> logic low 24 mA maximum
>
>What exactly does the current limit means? Does it mean that the card
>wont be able to give me more than that current or that, even thought it
>could posibly give that current, it is very possible to damage the card
>if I demand more than that current?
>
>
>
Source, conventional current flows out of the device.
Sink, conventional current flows
into the device.
The maximum current you can source from the device is 2.6mA without the
logic state 1 output voltage falling below 2.4V
The maximum current you can sink into the device is 24mA without the
logic state 0 output voltage rising above 0.5V
I haven't checked the spec. but it is likely that if you greatly exceed
the currents quoted you will damage the device.
--
Regards
John Cameron
Senior Design Engineer
Northern Hi-Tec Ltd
Wasco House
Willow Lane
Lancaster
LA1 5NA
United Kingdom
Telephone: +44 (0) 1524 67833
Facsimile: +44 (0) 1524 67544
Email: john.cameron@nht.co.uk
URL: www.nht.co.uk