| 摘要 |
PURPOSE:To contrive to attain a highly efficient space factor by utilizing a parasitic capacitance of a transistor (TR) to eliminate the occupied area by the capacitance in a chip. CONSTITUTION:When an output rises from 'L' to 'H', a TR Q3 changes from ON to OFF and off-buffers QB, QC change from OFF to ON state. Then the buffers QD, QA change from OFF to ON. A current being a multiple of hFE of a fine base current obtained by utilizing a parasitic capacitance CCB between the collector and base of the buffer QB from a common connecting point P of the Darlington connection comprising the buffers QB, QC flows from the emitter of the TR QD to the base of the TR QA to obtain a base current. Thus, the TR QA is raised rapidly. |
