Patent ID: 7342428
Filing Date: 2008-03-11
Classification: H03K

Abstract:
1. A negative pulse on edge circuit, comprising: a first pull up transistor having its gate terminal coupled to a delayed control signal; a second pull up transistor having its gate terminal coupled to an inverted delayed control signal, wherein the first and second pull up transistors are coupled together at a first terminal and coupled to a power source at a second terminal; a first and second pull down transistors coupled in series between the first pull up transistor and a low voltage bias, wherein the gate of the first pull down transistor is coupled to the delayed control signal and the gate of the second pull down transistor is coupled to an inverted control signal; and a third and fourth pull down transistors coupled in series between the second pull up transistor and the low voltage bias, wherein the gate of the third pull down transistor is coupled to a control signal and the gate of the fourth pull down transistor is coupled to the inverted delayed control signal and wherein an output pulse signal is generated from the first terminal, wherein the first and second pull up transistors are coupled.