| 摘要 |
A ternary CAM system includes a main memory cell configured to store complementary data signals D/D#. A first transistor has a source coupled to receive data signal D#, and a gate coupled to receive a compare signal C. A second transistor has a source coupled to receive data signal D, and a gate coupled to receive complementary compare signal C#. A third transistor has a gate coupled to drain regions of the first and second transistors. A mask cell storing a mask value is coupled to the source of the third transistor. A pre-charged match line is coupled to the drain of the third transistor. If compare signals C/C# match data signals D/D#, then the third transistor is turned off, thereby isolating match line and mask cell. If compare signals C/C# don't match data signals D/D#, then the third transistor is turned on, thereby coupling mask cell and match line.
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