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I am trying to buy a LM555CN-R online, however I can only find an LM555CN/NOPB. What are the differences, if any, on these chips?

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  • \$\begingroup\$ Which vendor? TI doesn't list an LM555CN-R in their datasheet \$\endgroup\$
    – Colin
    Jul 25, 2019 at 10:29
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    \$\begingroup\$ I always thought that NOPB meant "no lead [on the device pins]" and was part of ROHS \$\endgroup\$
    – Elliot Alderson
    Jul 25, 2019 at 11:20

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The LM555CN-R is made by fairchild semiconductor Datasheet

The LM555CN/NOPB is made by Texas instruments Datasheet

The subtle difference is found in the datasheets e.g. power dissipation capabilities.

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