| 摘要 |
It is described a circuit and a method for transforming an input signal into a logical output. The circuit (100) comprises an inverter stage (120), connected in between the first conductor (101) and the second conductor (102). The inverter stage (120) includes a MOS switch (MP0), which comprises a first terminal being connected to the first conductor (101), a second terminal being connected to an output node (hyst), a gate terminal being connected to an input node (JN), and a back gate terminal. The circuit (100) further comprises a voltage divider (130), connected in between the first conductor (101) and the output node (hyst), wherein the voltage divider (130) provides a divider output node (bg) being connected to the back gate terminal. The circuit (100) represents an input cell having an improved hysteresis behavior over the total operating voltage range. This is achieved by adjusting the back gate voltage of the MOS switch (MP0) during a transition from an input level Low to an input level High. This causes a temporarily increased threshold voltage for turning off the MOS switch (MP0) during the transition.
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