Voltage level conversion circuit

Details Voltage level conversion circuit Voltage level conversion circuit

2007-09-04

2007-09-04

Liu, Shuwang (Department: 2809)

Electronic digital logic circuitry

Interface

Logic level shifting

C326S062000, C326S063000, C326S075000

Reexamination Certificate

active

11175450

ABSTRACT:
A voltage level conversion circuit for converting a voltage level of a low voltage system input signal into a voltage level of a high voltage system signal comprises a latch circuit comprising plural high-breakdown-voltage MOS transistors having a high power supply voltage as a breakdown voltage, a first high-breakdown-voltage N channel MOS transistor which discharges one of the latch nodes of the latch circuit, and a second high-breakdown-voltage N channel MOS transistor which discharges the other latch node, and a pulse signal obtained by boosting a low voltage system pulse signal is applied to a gate of the first or second high-breakdown voltage N channel MOS transistor when the input signal transits.

REFERENCES:
patent: 5650742 (1997-07-01), Hirano
patent: 6717453 (2004-04-01), Aoki
patent: 6853234 (2005-02-01), Bucossi
patent: 7-321638 (1995-12-01), None

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