Multiple output level shifter

Details Multiple output level shifter Multiple output level shifter

2011-04-05

2011-04-05

Tran, Anh Q (Department: 2819)

Electronic digital logic circuitry

Interface

Supply voltage level shifting

C326S068000, C326S080000

Reexamination Certificate

active

07919983

ABSTRACT:
A level shifter for integrated circuits includes input stage transistors, reference stage transistors, a cascode stage coupled to the input stage and the reference stage transistors and a pair of comparators. The cascode stage generates a first cascode output and a second cascode output. The input stage transistors selectively conduct a low reference voltage as the first cascode output based on a pair of inputs provided to the input stage transistors. The reference stage transistors selectively conduct a high reference voltage as the second cascode output based on a first comparator output and a second comparator output. The pair of comparators generate the first and the second comparator outputs based on the first and the second cascode outputs.

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patent: 7151391 (2006-12-01), Chen et al.
patent: 2010/0061164 (2010-03-01), Tandon et al.

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