Voltage level shifter

Details Voltage level shifter Voltage level shifter

1997-11-03

2000-03-28

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

326 81, 326 63, H03L 500

Patent

active

060436980

ABSTRACT:
The present invention provides a voltage level shifter for use in a digital circuit having a low voltage portion and a high voltage portion. The voltage shifter comprises an interface circuit 20,32,60 that senses transitions in a low voltage digital signal from an old value to a new value and uses these to trigger latching of the new value. The latch can be a SR latch 34,62 with its set 40 and reset 42 inputs coupled to pulse generators 46,68,58,70 respectively responsive to rising and falling edges in the input low voltage signal being passed from the low voltage portion to the high voltage portion. Feedback from the output on the latch 62 can be controlled to limit the duration of the pulses from the pulse generators 68,70 and thereby reduce power consumption due to the dc current leakage associated with a low voltage to high voltage signal interface.

REFERENCES:
patent: 4656373 (1987-04-01), Plus
patent: 4978870 (1990-12-01), Chen et al.
patent: 5136190 (1992-08-01), Chern et al.
patent: 5204557 (1993-04-01), Nguyen
patent: 5578957 (1996-11-01), Erhart et al.
patent: 5896045 (1999-04-01), Siegel et al.

Affiliated with

Also associated with

Rating

Voltage level shifter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voltage level shifter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage level shifter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1329280