Bi-directional voltage translator

Details Bi-directional voltage translator Bi-directional voltage translator

1999-07-01

2000-11-28

Nelms, David

Electronic digital logic circuitry

Interface

Logic level shifting

326 80, H03K 190175

Patent

active

061540579

ABSTRACT:
A bi-directional voltage translator (125) has a first port (201) that communicates a signal at a first voltage level, and second port (202) that communicates a signal at a second voltage level different from the first voltage level. A switching circuit, including a bipolar junction transistor (210) and a switch (220), couples both ports (201, 202). The transistor (210) has a collector (211) coupled, via a pull-up circuit (206), to a voltage source corresponding to the first voltage level, and to the first port (201), and an emitter (212) coupled to the second port. The base (213) of the transistor (210) is coupled, via a pull-up circuit (207), to a voltage source corresponding to the second voltage level. Preferably, the switch (220) is Schottky diode or other diode having a forward voltage drop.

REFERENCES:
patent: 5017800 (1991-05-01), Divan
patent: 5680063 (1997-10-01), Ludwig et al.

Affiliated with

Also associated with

Rating

Bi-directional voltage translator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bi-directional voltage translator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bi-directional voltage translator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1729521