| 摘要 |
PURPOSE:To reduce a delay of sigal transmission and to prevent te generation of head with an internal element of a drive circuit, by supplying the output of a 1-shot circuit to the control terminal of a switching element and putting the switching element under a conduction state while signals are delivered from the 1-shot circuit. CONSTITUTION:When a signal Sa to be trasmitted is changed to a low level from a high level, the pulse of the fixed time width (t) is delivered from a 1-shot circuit 12. Then a transistor TR1 is set ON for an extremely short time. Thus a large current is supplied to a trasmisson line L for a short time via a resistance R3 and the TR1. Then, the electrostatic capacity of the line L and a capacitor C1 are charged in a short time. As a result, the potential Vb of the input terminal of a buffer 11 is set at a high level with an extremely short time delay from the fall of the signal Sa. This can reduce greatly the transmission delay of signals and then decrease the power consumption of both the R3 and the TR1. |
