Patent ID: 6424170
Filing Date: 2002-07-23
Classification: G06F,H03K,H04L

Abstract:
An apparatus, comprising:a single termination impedance element having a first terminal coupled to a node of a bus and having a second terminal; and a switching element having a first terminal coupleable to a voltage source, the switching element having a second terminal coupled to only the second terminal of the impedance element, the switching element having a third terminal to receive a signal to switch the switching element to couple the termination impedance element between the voltage source and the node if a voltage at the node is at a first level and to de-couple the termination impedance element between the voltage source and the node if the voltage at the node is at a second voltage lower than the first level, the termination impedance element and the switching element being formed on a same die, the termination impedance element having an impedance to substantially match a characteristic impedance of the bus and to bias the switching element to a substantially linear current-voltage (I-V) characteristic operating region.