Patent ID: 6154057
Filing Date: 2000-11-28
Classification: H03K

Abstract:
A bi-directional voltage translator, comprising:a first port that communicates a signal at a first voltage level;a second port that communicates a signal at a second voltage level different from the first voltage level, wherein the second voltage level is at most 2.7 volts;a switch circuit coupling the first port to the second port, the switch circuit comprising:a switch coupling the first port to the second port; anda bipolar junction transistor having a base, an emitter, and a collector, the base being coupled, via a pull-up circuit, to a voltage source corresponding to the second voltage level, the collector being coupled, via a pull-up circuit, to a voltage source corresponding to the first voltage level, the emitter being coupled to the second port and the collector being coupled to the first port.