| 摘要 |
PURPOSE:To provide the bus driver circuit which selects an optimum through rate where efficient transmission is performed at a high speed. CONSTITUTION:First to N-th MOS transistors TRs 10(1) to 10(N) connected in series between the waveform input terminal and the waveform output terminal and first to M-th control MOS TRs 11(1) to 11(M) are provided. Sources of first to M-th MOS TRs are connected to drains of first to M-th control MOS TRs. Gates of (M+1)th to N-th MOS TRs are connected to a ground 30, and gates of first to M-th control MOS TRs are connected to control signals 81(1) to 81(M) which turn on/off first to M-th control MOS TRs. The source of each control MOS TR is connected to the ground through first to M-th resistors. Thus, the optimum through rate is selected in accordance with the classification and the the property of the waveform, the transmission speed, etc. |
