| 摘要 |
A voltage level shifter (500) comprises a plurality of PMOS transistors (510A, 512A) coupled in series with NMOS transistors (510B, 512B) to form a plurality of pull-down inverters (510, 512). When the second voltage level is enabled to connect, the pull-down inverters pull down faster than the pull-down NMOS transistors alone. The pull-up PMOS transistors (514, 516) pull up immediately to connect the first voltage level to the second voltage level. Thus, the PMOS transistors added to form pull-down inverters improve the switching time and eliminate the kinks in the output voltage. |
