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    • 6. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US4532613A
    • 1985-07-30
    • US356487
    • 1982-03-09
    • Yoshihiro TakemaeTomio NakanoTsuyoshi Ohira
    • Yoshihiro TakemaeTomio NakanoTsuyoshi Ohira
    • G11C11/407G11C11/409G11C11/4093G11C11/40
    • G11C11/4093
    • In a semiconductor memory device including an output buffer circuit receiving data signals read out from a memory cell array, an output stage MOS transistor being turned ON and OFF according to the output signals of the output buffer circuit, and an output buffer enable (OBE) signal generator circuit for generating an OBE signal which is used as the voltage supply to the output stage of the output buffer circuit, a V.sub.BS voltage generator circuit is provided for generating a voltage V.sub.BS higher than the voltage source V.sub.CC preceding the rising up of the OBE signal, which voltage V.sub.BS is used as a voltage supply to the output stage of the OBE signal generator circuit, whereby the OBE signal is formed as a voltage waveform which rises rapidly up to a level higher than the voltage source V.sub.CC.
    • 在包括从存储单元阵列读出的数据信号的输出缓冲电路的半导体存储器件中,输出级MOS晶体管根据输出缓冲电路的输出信号而导通和截止,而输出缓冲器使能(OBE) 信号发生器电路,用于产生用作向输出缓冲电路的输出级的电压供给的OBE信号,提供VBS电压发生器电路,用于产生比OBE上升之前的电压源VCC高的电压VBS 信号,哪个电压VBS被用作到OBE信号发生器电路的输出级的电压供应,由此OBE信号形成为快速上升到高于电压源VCC的电平的电压波形。