74LS221B is cataloged as MICROCIRCUIT,DIGITAL. It carries 1 NSN identity and cross-references to 6 related part numbers. The part appears on MCRL cross-reference data.
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99086244, DM74LS221N, SN74LS221J, SNC54LS221-J, SNC54LS221J, SNC54LS221J-00
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