| 摘要 |
A collector-dotted current-mode logic circuit which includes a plurality of current-mode logic circuits each containing a first and a second transistors, where the collectors of the first transists and the collectors of the second transistors are respectively connected. A load consisting only of a resistor is connected to the collectors of the first transistors. A load is also connected to the collectors of the second transistors. When the signal level at the collectors of the second transistors is "H", the current supplied by one of the constant current sources that supply currents to the resistor load is bypassed by way of a bypass circuit. As a result, the "L" level at the collector of the first transistor where logic is output, is so controlled as to maintain its constancy for any condition of the logic signal input to this current-mode logic circuit.
|
