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    Level shifting CMOS I/O buffer
    1.
    发明授权
    Level shifting CMOS I/O buffer 有权
    电平移位CMOS I / O缓冲器

    公开(公告)号：US06262599B1

    公开(公告)日：2001-07-17

    申请号：US09544132

    申请日：2000-04-06

    申请人： Terry C. Coughlin, Jr. ,  William F. Lawson ,  Joseph M. Milewski

    发明人： Terry C. Coughlin, Jr. ,  William F. Lawson ,  Joseph M. Milewski

    IPC分类号： H03K190175

    CPC分类号： H03K19/09429 ,  H03K19/018521

    摘要： A low power CMOS bidirectional I/O buffer that translates low voltage core logic level signals into the higher voltage logic level signals. A first predrive stage is provided, comprising buffers (e.g., CMOS inverters) for tuning and balancing the circuit and the core signal combining circuit of a second predrive stage, thereby enabling IC designers to reduce the size of transistors in the level-shifting stage and providing more flexibility in the tuning of the predrive circuitry to synchronize or balance the logical transitions of the complementary transistors of the output driving stage. The invention provides a faster balanced level-shifting output buffer which enables higher frequency operation.

    摘要翻译： 低功耗CMOS双向I / O缓冲器，可将低电压核心逻辑电平信号转换为较高电压逻辑电平信号。 提供了第一预驱动级，包括用于调谐和平衡第二预驱动级的电路和核心信号组合电路的缓冲器（例如，CMOS反相器），从而使得IC设计者能够在电平移位级中减小晶体管的尺寸， 在预调制电路的调谐中提供更大的灵活性以同步或平衡输出驱动级的互补晶体管的逻辑转换。 本发明提供了一种更快的平衡电平转换输出缓冲器，其实现更高频率的操作。

    5V-tolerant receiver for low voltage CMOS technologies
    3.
    发明授权
    5V-tolerant receiver for low voltage CMOS technologies 失效
    用于低电压CMOS技术的5V耐受接收器

    公开(公告)号：US06441670B1

    公开(公告)日：2002-08-27

    申请号：US09930413

    申请日：2001-08-15

    申请人： Terry C. Coughlin, Jr. ,  Joseph M. Milewski ,  Akio Miyoshi ,  Loc Khac Nguyen

    发明人： Terry C. Coughlin, Jr. ,  Joseph M. Milewski ,  Akio Miyoshi ,  Loc Khac Nguyen

    IPC分类号： H03K508

    CPC分类号： H03K5/08 ,  H03K19/00315

    摘要： Receiver circuit providing interface between a legacy system sourcing logic signals including high logic level signals at first voltage levels to semiconductor IC devices operating at second voltage levels, wherein the first voltage levels are greater than the second voltage levels. The receiver circuit comprises: a pass gate device receiving the input voltages including high level logic signals at first logic levels and translating the high logic level signals to an intermediate voltage level for output at a first circuit node, the intermediate voltage level being less than the first voltage level; a first inverter device for receiving the translated voltages at the intermediate voltage levels and inverting the voltages for output at a second circuit node, whereby high input logic level voltages are pulled down at the second node and low input logic level voltages are pulled up at the second node; a circuit element in series with the first inverter device for connecting the first inverter device to a voltage supply source that provides pulled up signals at the second voltage levels in response to low logic level input voltages; and, a circuit responsive to pulled down voltage at the second node for deactivating the first circuit element to thereby prevent leakage current to ground through the first inverter device. Stable switching of voltages is achieved at the second node in a manner that eliminates leakage current between the voltage supply source providing pulled up signals at the second voltage levels and the receiver input.

    摘要翻译： 接收器电路提供传统系统之间的接口，逻辑信号包括在第一电压电平处的高逻辑电平信号到在第二电压电平工作的半导体IC器件，其中第一电压电平大于第二电压电平。 接收器电路包括：通过栅极器件，其接收包括处于第一逻辑电平的高电平逻辑信号的输入电压，并将高逻辑电平信号转换成中间电压电平以在第一电路节点处输出，所述中间电压电平小于 第一电压电平; 第一逆变器装置，用于接收处于中间电压电平的转换电压并使第二电路节点处的输出电压反相，从而在第二节点向下拉高输入逻辑电平电压，并在第二节点处将低输入逻辑电平电压拉高 第二节点 与所述第一逆变器装置串联的电路元件，用于将所述第一逆变器装置连接到电压源，所述电压源响应于低逻辑电平输入电压而以所述第二电压电平提供上拉信号; 以及响应于第二节点处的下拉电压的电路，用于停用第一电路元件，从而防止通过第一逆变器装置接地的漏电流。 在第二节点处实现稳定的电压切换，以消除在第二电压电平提供上拉信号的电压源和接收器输入之间的泄漏电流。

    Smoke alarm having temporary disabling features
    5.
    发明授权
    Smoke alarm having temporary disabling features 失效
    烟雾报警器具有临时禁用功能

    公开(公告)号：US4313110A

    公开(公告)日：1982-01-26

    申请号：US122654

    申请日：1980-02-19

    申请人： Thomas Subulak ,  Joseph M. Milewski

    发明人： Thomas Subulak ,  Joseph M. Milewski

    IPC分类号： G08B17/00 ,  G08B17/10 ,  G08B21/00

    CPC分类号： G08B17/10 ,  G08B17/00

    摘要： A smoke alarm having means for detecting smoke and producing a signal in response to the detected smoke is provided with a manually-actuated control which cooperates with the signal producing means to temporarily deactivate the same and to automatically reactivate the same after a predetermined time delay. A temperature responsive override switch is provided to actuate the signal in the event of a fire during the time delay. Thus, a homeowner is able to temporarily deactivate the smoke alarm, such as duringcooking, parties, showering, etc. to thereby prevent the alarm from going off in response to non-fire conditions.

    摘要翻译： 具有用于检测烟雾并响应于检测到的烟产生信号的装置的烟雾报警器具有手动致动控制，其与信号发生装置协作以暂时停用该信号并在预定的时间延迟之后自动重新启动。 提供温度响应超控开关以在时间延迟期间在发生火灾的情况下致动信号。 因此，房主能够暂时停用烟雾报警器，例如在煮食，派对，淋浴等期间，从而防止报警器响应于非火焰状况而脱落。