| 摘要 |
<p>A semiconductor integrated circuit formed of a source coupled type logic circuit (11) using a field effect transistor and having a function of switching a circuit function by an input signal from the outside, which includes current controlling means (J31) for controlling an amount of a signal, which are arranged in series between the outside signal input terminal (IN) and a gate (N11) of the field effect transistor serving as a part of the circuit having a function of switching the circuit function. Since an element (J31) for limiting a current is provided at a part for inputting a function switching signal, a current is prevented from flowing into the circuit (11) from the outside and also a voltage of the signal from the outside can be sent to the inside of the circuit (11). As a result, power comsumption of the circuit can be reduced and a size of the circuit can be also reduced. <IMAGE></p> |
