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The schematic I'm looking at says to use an LM2917. The specs from the TI site use both LM2917 and LM2917-N and the shop on ebay uses both names too.

http://www.ebay.com/itm/like/270864373784?lpid=82&chn=ps&ul_noapp=true

http://www.ti.com/lit/ds/symlink/lm2907-n.pdf

Is this some kind of naming convention I should know about for the future?

Julian Cienfuegos
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1 Answers1

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N is TI's designation for their Plastic DIP through hole package. Note that the SMD SOIC package designation is M.

Note, these are old ICs first designed by National Semi in the 1970s (This App note is from 1976) and later cloned by everybody. TI eventually acquired NatSemi in the 2000s and absorbed their ICs into their product lines.

I believe but can't find the original first revision datasheets to confirm, that these ICs first came out when Ceramic DIP were still common, so the N designator for moulded plastic DIP was important to point out the difference. -8 at the end also designated it as the 8 pin version, so LM2917N-8 is the 8 pin PDIP.

Passerby
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