cannot find TLC277 opamp in pakistan

bilal sardar <[email protected]>
Newsgroups gmane.comp.science.openeeg.general
Message-ID <[email protected]>
i can not find These parts in in pakistan
. INA114P.TLC277P        ( can i use 4558D instead?).TMV0505S    .TL431CLP  
please i'm in trouble, can you suggest me the substitutes?
Thanks for awesome project.

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