| 摘要 |
A comparator for comparing the voltage of an address pair signals in complement with the voltages of bit pair signals in complement includes a pair of transistors for receiving the bit pair signals and a pair of MOSFETs for receiving the address pair signals. One transistor and one MOSFET are connected in series to define a first current path and other transistor and other MOSFET are connected in series to define a second current path. When the address signal and the bit signal are the same, both the first and second current paths close, but when they are different; either the first or the second current path opens to permit a current to pass therethrough. By detecting the current in the path, the coincidence and non-coincidence between the address pair signals and bit pair signals are detected.
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