sorry for this ot but im troubleshooting an old digital read out display and i have a problem identifying the chips used, i have already searched at the icmaster.com but since the chips are old and discontinued, i suppose they don't provide the pin outs any longer.Do you know of any other site similar to icmaster.com or better yet can you provide me the pinouts and functions of the following ic's; MN01301, MSL912RS, UPA54H. Your valuable help will be greatly appreciated...

regards, Alan

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