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71. 发明授权

US5475639A Semiconductor memory device with improved speed for reading data 失效
标题翻译：半导体存储器件具有改善读取数据的速度
公开(公告)号：US5475639A
公开(公告)日：1995-12-12
申请号：US215023
申请日：1994-03-21
申请人： Akihiro Iwase , Teruo Seki , Shinji Nagai , Tadashi Ozawa
发明人： Akihiro Iwase , Teruo Seki , Shinji Nagai , Tadashi Ozawa
IPC分类号： G11C11/41 , G11C11/419 , G11C7/00
CPC分类号： G11C11/419
摘要： Disclosed is a semiconductor memory device which operates based on voltages from a high voltage power source and a low voltage power source. A plurality of memory cells are formed in a memory cell array. Plural pairs of bit lines are connected to the memory cells to transfer data signals read from the memory cells. A sense amplifier, which has a pair of input terminals, amplifies the data signal. A level shifter is selectively connected to plural pairs of bit lines to shift the level of the data signal of a selected pair of bit lines to a level near the operation point of the sense amplifier, and supplies a resultant data signal to the sense amplifier. The level shifter includes a first transistor for receiving the data signal, and a plurality of second transistors connected between the first transistor and the low voltage power source. The first transistor has a first terminal to be supplied with the data signal, a second terminal and a control electrode for receiving a control signal for transferring the data signal to the sense amplifier. The second transistors are connected between the second terminal of the first transistor and the low voltage power source. The output of the second terminal of the first transistor is input to the input terminals of the sense amplifier.
摘要翻译：公开了一种基于来自高压电源和低电压电源的电压进行工作的半导体存储器件。在存储单元阵列中形成多个存储单元。多对位线连接到存储器单元以传送从存储器单元读取的数据信号。具有一对输入端的读出放大器放大数据信号。电平移位器选择性地连接到多对位线，以将所选择的一对位线的数据信号的电平移动到读出放大器的操作点附近的电平，并将得到的数据信号提供给读出放大器。电平移位器包括用于接收数据信号的第一晶体管和连接在第一晶体管和低电压电源之间的多个第二晶体管。第一晶体管具有要提供数据信号的第一端子，第二端子和控制电极，用于接收用于将数据信号传送到读出放大器的控制信号。第二晶体管连接在第一晶体管的第二端子和低压电源之间。第一晶体管的第二端子的输出被输入到读出放大器的输入端。

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