公开(公告)号：US5889414A

公开(公告)日：1999-03-30

申请号：US840337

申请日：1997-04-28

申请人： Li-Chun Li ,  Lynne Watters ,  Sharlin Fang

发明人： Li-Chun Li ,  Lynne Watters ,  Sharlin Fang

IPC分类号： G11C17/18 ,  G11C29/00 ,  H03K19/173 ,  H03K19/094

CPC分类号： G11C29/88 ,  G11C17/18 ,  G11C29/883 ,  H03K19/1733

摘要： A fuse-programmable circuit controllably enables or disables an electrical signal (S). The circuit includes a transmission gate (118) connected between the circuit's input and output terminals. The transmission gate is controlled by complimentary outputs OUTH, OUTL of a fuse-programmable latch (130). A PMOS transistor (Q41) and a fuse (F41) are connected in series between the output terminal and a power supply voltage (VCC). An NMOS transistor (Q42) and a fuse (F42) are connected in series between the output terminal and a reference voltage (ground). The gate of the PMOS transistor is connected to the latch output OUTH. The gate of the NMOS transistor is connected to the latch output OUTL. When OUTH is high and OUTL is low, the transmission gate couples the signal (S) from the input terminal to the output terminal. When OUTH is low and OUTL is high, the transmission gate is closed. The output terminal is permanently fixed at the power supply voltage level or the reference voltage level depending on which of the two fuses (F41 or F42) is blown and which of the two fuses is intact.

摘要翻译： 熔丝可编程电路可控地启用或禁用电信号（S）。 电路包括连接在电路的输入和输出端子之间的传输门（118）。 传输门由熔丝可编程锁存器（130）的互补输出OUTH，OUTL控制。 PMOS晶体管（Q41）和熔丝（F41）串联连接在输出端子和电源电压（VCC）之间。 NMOS晶体管（Q42）和熔丝（F42）串联在输出端子和参考电压（地）之间。 PMOS晶体管的栅极连接到锁存输出OUTH。 NMOS晶体管的栅极连接到锁存输出OUTL。 当OUTH为高电平且OUTL为低电平时，传输门将信号（S）从输入端子耦合到输出端子。 当OUTH为低电平且OUTL为高电平时，传输门关闭。 输出端子永久固定在电源电压电平或参考电压电平上，这取决于两个保险丝（F41或F42）中的哪一个被熔断，两个保险丝中的哪一个是完整的。

公开(公告)号：US5841718A

公开(公告)日：1998-11-24

申请号：US909014

申请日：1997-08-08

申请人： Lynne Watters ,  Sharlin Fang ,  Pochung Young

发明人： Lynne Watters ,  Sharlin Fang ,  Pochung Young

IPC分类号： G11C7/06 ,  G11C7/10 ,  H03K3/356 ,  G11C7/00

CPC分类号： G11C7/1093 ,  G11C7/065 ,  G11C7/1078 ,  H03K3/356156 ,  H03K3/356191

摘要： A circuit provides a differential voltage on two nodes. The nodes are precharged by a precharge circuit before every cycle in which the differential voltage is provided. If during the precharge operation, the node voltage at one of the two nodes is within a predetermined range of voltages relative to a supply voltage used in the precharge operation, then the precharge circuit is incapable of precharging the two nodes to the same voltage, Therefore, an equalization transistor is provides between the two nodes to ensure that the two nodes are properly precharged and equalized by the end of the precharge operation.

摘要翻译： 电路在两个节点上提供差分电压。 在提供差分电压的每个周期之前，节点由预充电电路预充电。 如果在预充电操作期间，两个节点之一处的节点电压相对于在预充电操作中使用的电源电压在预定的电压范围内，则预充电电路不能将两个节点预充电到相同的电压。因此 在两个节点之间提供均衡晶体管，以确保两个节点在预充电操作结束之前被适当地预充电和均衡。