| 摘要 |
<p>There is provided a tri-state circuit comprising first and second transistors connected in series between two source voltage levels, an output line being taken from the point of connection of the transistors and a resistance connected between either of said source voltage levels and the output line, the first transistor being turned on in response to an input signal applied to a first input line, an output signal appearing on said output line in response to said input signal, both said transistors being turned off in response to an input signal applied to a second input line, characterised by means for turning on the one of said transistors connected to the source voltage level to which the resistance is connected for a predetermined time in response to an input signal applied to said second input line before said first and second transistors are turned off, thereby accelerating charging or discharging of said output line. An integrated circuit including such a tri-state circuit is also provided. <IMAGE></p> |
