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Parallel Port to 74HCT244

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ramkjaya

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Hi All,

I m new to building circuits and now I m trying to connect a 74HCT244 in between parallel port and uC AtmelMega8. The reason to this was a result of some googling that indicated that parallel port is of TTL logic which is not compatible with HiCMOS logic.
I use this as the datasheet for the buffer chip https://www.electro-tech-online.com/custompdfs/2008/12/SCHS167APDF.pdf.

One thing which is confusing me, is that will the buffer chip over-load my parallel port by pulling / sourcing more current. I am not able to see the maximum current flow provided in the datasheet for inputs at V(il) and V(ih). Can someone correct me in case I got the picture wrong.

Also, can someone point to some materials where the factors that are required to take into considerations while inter-interfacing of logic-levels needs to be done.

Thanks,
RAM
 
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