| 摘要 |
PURPOSE: An address decoding apparatus of a semiconductor memory device is provided to reduce off-leakage current consumption by reducing the number of idle drivers. CONSTITUTION: Decoding units(30,32,34) outputs a first, a second and a third pre-decoding signal by decoding a column address. A first and a second driving unit output the first and the second pre-decoding signal. A third driving unit latches the third pre-decoding signal by a column address enable signal. A switching unit(50) is connected to the output terminal of the third driving unit. A fourth driving unit generates a control signal controlling the switching unit by decoding the output signal of the first and the second driving unit. |
