Patent ID: 6242973
Filing Date: 2001-06-05
Classification: G11C,H03K

Abstract:
A bootstrapped CMOS driver, comprising:a drive unit comprising pull-up and pull-down devices; anda bootstrap unit that boosts gate voltages of the pull-up and pull-down devices using a pull-up section and a pull-down section performing pull-up and pull-down operations, respectively, in accordance with a level of an input signal, wherein the pull-up section comprises:first and second MOS devices serially connected between a power voltage terminal and a first node,a first bootstrap capacitor connected between the first node and a second node, anda third MOS device a drain and a source of which are connected with the first node and a ground, respectively, and a gate of which is connected with a common drain of the first and second MOS devices and a gate of the pull-up device, and wherein the pull-down section comprises,a second bootstrap capacitor connected between the second node and a third node,fourth and fifth MOS devices serially connected between the third node and the ground, anda sixth MOS device a source and a drain of which are connected with the third node and the ground, respectively, and a gate of which is connected with a common drain of the fourth and fifth MOS devices and a gate of the pull-down device.