| 摘要 |
A level translating digital switch in which a switching element provides switching and level translation between a first system and a second system that operate using different logic supply voltages. In a situation where the supply voltage for the first system is larger than the supply voltage for the second system, the switching element is driven by a voltage lower than the logic supply voltage of the first system. In one form of the invention, a level translating digital switch comprises a switching element that provides a bi-directional signal path between a first system operating with a first logic supply voltage and a second system operating with a second logic supply voltage, a driver circuit including a voltage selection portion that generates a secondary supply voltage that is less than the first logic supply voltage, and a control portion powered by the secondary supply voltage, the control portion generating a control voltage for the switching element, wherein the control voltage is less than the first logic supply voltage.
|
