<page_title> 555 timer IC </page_title> <section_title> Derivatives </section_title> <table> <cell> NE556 <col_header> Part Number </col_header> </cell> <cell> 2 <col_header> Timer Total </col_header> </cell> <cell> First 556 timer DIP-14 package <col_header> Remark </col_header> </cell> <cell> NE558 <col_header> Part Number </col_header> </cell> <cell> 4* <col_header> Timer Total </col_header> </cell> <cell> First 558 timer DIP-16 package <col_header> Remark </col_header> </cell> </table>
Variants available include the 556 (a DIP-14 combining two complete 555s on one chip) and 558 (a DIP-16 combining four reduced timers on one chip).