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    • 65. 发明公开
    • 출력 버퍼
    • 输出缓冲器
    • KR1020040005091A
    • 2004-01-16
    • KR1020020039385
    • 2002-07-08
    • 삼성전자주식회사
    • 서진호
    • G11C7/10
    • H03K19/018521H03K19/01742
    • PURPOSE: An output buffer is provided, which turns off a pull-up transistor within a short time in a bidirectional I/O cell used for transferring bidirectional signal and has an immunity as to an excessive voltage. CONSTITUTION: A pre-driver circuit(100) receives a signal input and an output enable input and generates a pull-up voltage signal and a pull-down voltage signal. A transfer gate(107) has the first transistor connected to a power supply voltage(VDD) and the second transistor connected to the second node, and receives the pull-up signal from the pre-driver circuit and then transmits it to the first node. A pull-up driver has a gate connected to the first node and is connected between a pad(106) and the power supply voltage. The third transistor is connected between the first node and the pad, and the fourth transistor is connected between the pad and the second node. A pull-down driver receives the pull-down signal from the pre-driver circuit and is connected between the pad and a ground(VSS). And a bias generation circuit is connected between the second node and the ground and receives the output enable signal, and turns on the second transistor when an output buffer is in a normal operation state and turns off the second transistor when the output buffer is in a high impedance state.
    • 目的:提供输出缓冲器,在双向I / O单元中短时间内关闭上拉晶体管,用于传输双向信号,并具有对过电压的抗扰性。 构成:预驱动电路(100)接收信号输入和输出使能输入,并产生上拉电压信号和下拉电压信号。 传输门(107)具有连接到电源电压(VDD)的第一晶体管和连接到第二节点的第二晶体管,并且从预驱动器电路接收上拉信号,然后将其发送到第一节点 。 上拉驱动器具有连接到第一节点并连接在焊盘(106)和电源电压之间的栅极。 第三晶体管连接在第一节点和焊盘之间,第四晶体管连接在焊盘和第二节点之间。 下拉驱动器从预驱动器电路接收下拉信号,并连接在焊盘和接地(VSS)之间。 并且偏置产生电路连接在第二节点和地之间并且接收输出使能信号,并且当输出缓冲器处于正常工作状态时接通第二晶体管,并且当输出缓冲器处于正常工作状态时关断第二晶体管 高阻态。
    • 66. 发明公开
    • 출력 신호의 전압이 설정 전압으로 제어되는 입력 버퍼 회로
    • 用于控制输出信号电压作为设置电压的输入缓冲电路
    • KR1020030043255A
    • 2003-06-02
    • KR1020010074333
    • 2001-11-27
    • 주식회사 티엘아이
    • 홍순원
    • H03K19/0175
    • H03K19/00384H03K19/018521
    • PURPOSE: An input buffer circuit for controlling a voltage of an output signal as a setup voltage is provided to minimize a variation of DC voltage of a buffer output signal according to a variation of process conditions by controlling a DC voltage level of the buffer output signal as a predetermined voltage level. CONSTITUTION: The first DC voltage control portion(210) generates the first AC signal by reflecting an AC voltage component of a buffer input signal. The first DC voltage control portion includes the first load and the first current source for controlling the current amount of the first load. The second DC voltage control portion(220) generates the second AC signal by reflecting an AC voltage component of the buffer input signal. The second DC voltage control portion includes the second load and the second current source for controlling the current amount of the second load. The first driving circuit(230) generates a buffer output signal in response to the first AC signal. The second driving circuit(240) generates the buffer output signal in response to the second AC signal. One of the first and the second current sources is formed with a variable current source to control the buffer output signal as a setup voltage.
    • 目的:提供一种用于控制输出信号电压作为设定电压的输入缓冲电路,通过控制缓冲器输出信号的直流电压电平,根据工艺条件的变化使缓冲器输出信号的直流电压变化最小化 作为预定电压电平。 构成:第一直流电压控制部(210)通过反映缓冲器输入信号的交流电压分量来产生第一交流信号。 第一直流电压控制部分包括用于控制第一负载的当前量的第一负载和第一电流源。 第二直流电压控制部分(220)通过反映缓冲器输入信号的交流电压分量来产生第二交流信号。 第二直流电压控制部分包括用于控制第二负载的当前量的第二负载和第二电流源。 第一驱动电路(230)响应于第一AC信号产生缓冲器输出信号。 第二驱动电路(240)响应于第二AC信号产生缓冲器输出信号。 第一和第二电流源之一由可变电流源形成,以将缓冲器输出信号控制为设置电压。
    • 67. 发明公开
    • 반도체 장치
    • 半导体器件
    • KR1020030038329A
    • 2003-05-16
    • KR1020020038150
    • 2002-07-03
    • 미쓰비시덴키 가부시키가이샤
    • 가지모또다께시
    • H03K17/16
    • H03K19/0175H03K19/018521
    • PURPOSE: To provide a semiconductor device which is operated at high speed and outputs an output signal with small amplitude. CONSTITUTION: An external voltage VDD is supplied to the power source terminal 8 of a semiconductor chip 1 and given to a semiconductor circuit 11 and a regulator circuit 13. An output control signal is given to an output circuit 12 from the semiconductor circuit 11 and the regulator circuit 13 gives an output voltage VDDQ obtained by lowering the external voltage VDD in response to an RD signal which is outputted from the semiconductor circuit 11. Thus, the regulator circuit 13 absorbs a power source noise due to the operation of the output circuit 12 without adding an external power source terminal exclusive for the output circuit 12. Then a high speed interface with small amplitude is realized.
    • 目的:提供高速运行并输出小振幅输出信号的半导体器件。 构成:将外部电压VDD提供给半导体芯片1的电源端子8,并且提供给半导体电路11和调节器电路13.输出控制信号从半导体电路11提供给输出电路12,并且 调节器电路13给出通过根据从半导体电路11输出的RD信号来降低外部电压VDD而获得的输出电压VDDQ。因此,调节器电路13由于输出电路12的操作而吸收电源噪声 而不需要添加专用于输出电路12的外部电源端子。然后实现具有小振幅的高速接口。
    • 68. 发明公开
    • 로직 레벨 시프팅 회로
    • 逻辑电平移位电路
    • KR1020030003386A
    • 2003-01-10
    • KR1020010039123
    • 2001-06-30
    • 매그나칩 반도체 유한회사
    • 강종훈
    • H03K19/0175
    • H03K19/018521H03K3/356165H03K19/0013
    • PURPOSE: A logic level shifting circuit is provided, which does not need two supply voltages by using an input stage by making a lower supply voltage using a voltage generator, and prevents a constant current of an output stage by feeding back an output voltage. CONSTITUTION: An input voltage generator(40) drops a power supply voltage down to a constant level, and an input stage(50) switches the dropped power supply voltage and an output of a ground voltage by an input signal. And an output stage(60) switches the power supply voltage and the output of the ground voltage as an output of the input unit. The input voltage generator unit comprises source followers(40_1,40_2,...,40_n) constituted with cascaded NMOS transistors and a directional switching element(41) constituted with a NMOS transistor connected with the source follower in serial.
    • 目的:提供一种逻辑电平移位电路,其通过使用电压发生器通过使用输入级而不需要两个电源电压,并且通过反馈输出电压来防止输出级的恒定电流。 构成:输入电压发生器(40)将电源电压降低到恒定电平,输入级(50)通过输入信号切换掉掉的电源电压和接地电压的输出。 并且输出级(60)将电源电压和接地电压的输出切换为输入单元的输出。 输入电压发生器单元包括由级联的NMOS晶体管构成的源极跟随器(40_1,40_2,...,40_n)和由与源极跟随器串联连接的NMOS晶体管构成的定向开关元件(41)。
    • 69. 发明公开
    • 반도체 집적회로
    • 半导体集成电路
    • KR1020030002160A
    • 2003-01-08
    • KR1020010038902
    • 2001-06-30
    • 매그나칩 반도체 유한회사
    • 김미경
    • H03K19/00
    • H03K19/00361H03K3/3565H03K19/018521
    • PURPOSE: A semiconductor integrated circuit is provided, which is appropriate for assuring a noise margin by operating two inputted signals using a Schmitt trigger circuit. CONSTITUTION: The first Schmitt trigger part(21) inverts the second signal inputted through a gate according to the first reference voltage level and the second reference voltage level. An inverter(22) inverts an output signal of the first Schmitt trigger part and then outputs it. A switching part(23) switches the first signal by output signals of the first Schmitt trigger part and the inverter. The second Schmitt trigger part(25) inverts an output signal of the switching part according to the first reference voltage level and the second reference voltage level. And a PMOS transistor(24) connects a power supply voltage(VDD) and a final output port through a source-drain path by the output signal of the inverter.
    • 目的:提供半导体集成电路,适用于通过使用施密特触发电路操作两个输入信号来确保噪声容限。 构成:第一施密特触发器部分(21)根据第一参考电压电平和第二参考电压电平反转通过栅极输入的第二信号。 逆变器(22)反转第一施密特触发器部分的输出信号,然后输出。 开关部件(23)通过第一施密特触发部件和逆变器的输出信号来切换第一信号。 第二施密特触发器部分(25)根据第一参考电压电平和第二参考电压电平来反转开关部分的输出信号。 并且PMOS晶体管(24)通过反相器的输出信号通过源极 - 漏极路径连接电源电压(VDD)和最终输出端口。
    • 70. 发明公开
    • 전압 인터페이스 회로를 구비한 반도체 집적 회로 장치
    • 包含电压接口电路的半导体集成电路设备
    • KR1020020084446A
    • 2002-11-09
    • KR1020010023713
    • 2001-05-02
    • 삼성전자주식회사
    • 정유신
    • G11C5/14
    • H03K19/00315H03K19/018521
    • PURPOSE: A semiconductor integrated circuit device comprising a voltage interface circuit is provided, which can drive an input pad sufficiently to a power supply voltage in a pull-up mode. CONSTITUTION: A voltage interface circuit(100) is connected between an input pad(200) and an internal logic(300). The voltage interface circuit includes two PMOS transistors(MP10,MP12) operating as a voltage conversion NMOS transistor(MN10) and a pull-up transistor. The NMOS transistor has a current path connected between the input pad and the internal logic and a gate electrode connected to a power supply voltage(VDD). The NMOS transistor converts a high voltage applied to the input pad into a voltage lower than the power supply voltage. The PMOS transistor has the first current electrode connected to the input pad and the second current electrode connected to the power supply voltage. The PMOS transistor has a current path formed between the power supply voltage and a ND1 node. The PMOS transistors are controlled by control signals(PU1,PU2) being output from a signal generator(160).
    • 目的:提供一种包括电压接口电路的半导体集成电路器件,其可以以上拉模式充分地驱动输入焊盘至电源电压。 构成:电压接口电路(100)连接在输入焊盘(200)和内部逻辑(300)之间。 电压接口电路包括作为电压转换NMOS晶体管(MN10)和上拉晶体管工作的两个PMOS晶体管(MP10,MP12)。 NMOS晶体管具有连接在输入焊盘和内部逻辑之间的电流路径以及连接到电源电压(VDD)的栅电极。 NMOS晶体管将施加到输入焊盘的高电压转换成低于电源电压的电压。 PMOS晶体管具有连接到输入焊盘的第一电流电极和连接到电源电压的第二电流电极。 PMOS晶体管具有形成在电源电压和ND1节点之间的电流路径。 PMOS晶体管由从信号发生器(160)输出的控制信号(PU1,PU2)控制。