Patent ID: 7961028
Filing Date: 2011-06-14
Classification: H03K

Abstract:
1. A single supply pass gate level converter (SPLC) used in a multiple supply voltage system, the SPLC comprising: an input data providing circuit unit which receives an input signal of a low supply voltage; a data inversion circuit unit which receives input data from the input data providing circuit unit and outputs inversed input data; a feedback circuit unit which is fed back by an output of the data inversion circuit unit; and a data output buffer which inverses an output of the data inversion circuit unit and outputs an inversed signal, wherein the input data providing circuit unit, the data inversion circuit unit, the feedback circuit unit, and the data output buffer are all driven by a high supply voltage such that only a single supply voltage which is the high supply voltage is required, wherein the input data providing circuit unit comprises a p-channel metal oxide semiconductor (PMOS) pass transistor, wherein a gate of the PMOS pass transistor of the input data providing circuit unit is bounded to the input signal such that the PMOS pass transistor is turned on or off by the input signal, and wherein a forward body bias is always maintained by coupling a body and source terminals of the PMOS pass transistor of the input data providing circuit unit so as to improve an operation speed.