Patent ID: 6366140
Filing Date: 2002-04-02
Classification: H03K

Abstract:
A buffer, comprising:a differential amplifier receiving first and second buffer input signals and providing corresponding first and second amplified output signals, the first amplified output signal forming a complement of the first input signal, and the second amplified output forming a complement of the second input signal; a voltage follower comprising first and second voltage follower transistors, the first voltage follower transistor receiving the first amplified output signal and providing a first buffer output signal on a first buffer output signal line and the second voltage follower transistor receiving the second amplified output signal and providing a second buffer output signal on a second buffer output signal line; and a steering circuit and first and second current sources, the steering circuit switchably coupling the first current source to either the first buffer output signal line or the second buffer output signal line based on the state of the first and second buffer output signals, and the steering circuit switchably coupling the second current source to either the first buffer output signal line or the second buffer output signal line based on the state of the first and second buffer input signals; the second current source being coupled to the second buffer output signal line upon the second buffer input signal transitioning to high, and the second current source being coupled to the first buffer output signal line upon the first buffer input signal transitioning to high; and the first current source being coupled to the first buffer output signal line upon the second buffer output signal transitioning to high, and the first current source being coupled to the second buffer output signal line upon the first buffer output signal transitioning to high.