Level shift circuit

Details Level shift circuit Level shift circuit

2007-02-13

2007-02-13

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C326S081000

Reexamination Certificate

active

11261518

ABSTRACT:
To a level shift basic circuit having a CMOS configuration and composed of four transistors M1through M4, a control circuit for preventing feed-through current through the transistors is added. Transitions of complementary data inputs Vin1and Vin2are made in a period in which n-MOS transistors M7and M8for control are turned OFF by changing a control input VS1to an L level (switch-off period). In this switch-off period, each source of the n-MOS transistors M1and M2is disconnected from VSS. In addition, in the switch-off period, a control input VS2is changed to an L level, thereby turning ON p-MOS transistors M5and M6for control. In a period in which the control p-MOS transistors M5and M6are ON, data outputs Vout1and Vout2are both precharged to VDD (precharge period).

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